[FFmpeg-trac] #2882(avdevice:reopened): ffmpeg can't save h264 stream from v4l2 webcam into file without recoding

FFmpeg trac at avcodec.org
Fri Jun 19 22:43:17 CEST 2015


#2882: ffmpeg can't save h264 stream from v4l2 webcam into file without recoding
------------------------------------+------------------------------------
             Reporter:  pchel       |                    Owner:
                 Type:  defect      |                   Status:  reopened
             Priority:  normal      |                Component:  avdevice
              Version:  git-master  |               Resolution:
             Keywords:  v4l2 h264   |               Blocked By:
             Blocking:              |  Reproduced by developer:  0
Analyzed by developer:  0           |
------------------------------------+------------------------------------
Changes (by noah):

 * status:  closed => reopened
 * resolution:  fixed =>


Comment:

 I would like to do HTTP Live Streaming without transcoding on a Raspberry
 Pi with a Raspberry Pi Camera module. However, this does not work with
 FFmpeg.  It seems FFmpeg gets confused somewhere after data has been
 captured from the V4L2 device; the H264 demuxer(?) starts spitting out a
 bunch of errors which seem to indicate it is being fed junk.

 I've verified the problem exists in tag n1.2.12, tag n2.6.1 and master  in
 git.

 TLDR:
 Changing AVSTREAM_PARSE_HEADERS to AVSTREAM_PARSE_FULL in
 libavdevice/v4l2.c:v4l2_read_header() fixes the problem for me.



 The problem seems to be very similar to what was reported in 2013, and
 subsequently fixed, here:
 https://trac.ffmpeg.org/ticket/2882 (ffmpeg can't save h264 stream from
 v4l2 webcam into file without recoding)


 What I would like to do, which isn't working (H264 errors, zero byte
 output), is:
 {{{
 $ ./ffmpeg -f v4l2 -t 3 -input_format h264 -i /dev/video0 -vcodec copy -y
 -loglevel debug foo.mkv
 [video4linux2,v4l2 @ 0x2fe4580] fd:3 capabilities:85200005
 [video4linux2,v4l2 @ 0x2fe4580] Current input_channel: 0, input_name:
 Camera 0, input_std: 0
 [video4linux2,v4l2 @ 0x2fe4580] Querying the device for the current frame
 size
 [video4linux2,v4l2 @ 0x2fe4580] Setting frame size to 1024x768
 [h264 @ 0x2fe4dd0] missing picture in access unit with size 27
 [h264 @ 0x2fe4dd0] no frame!
 [video4linux2,v4l2 @ 0x2fe4580] Non-increasing DTS in stream 0: packet 11
 with DTS 4675266598, packet 12 with DTS 4674226232
 ... more messages similar to the three above ...
 }}}


 Similarly, this doesn't work either:
 {{{
 $ ./ffprobe -f v4l2 -input_format h264 /dev/video0
 [video4linux2,v4l2 @ 0x2aa2fa0] fd:3 capabilities:85200005
 [video4linux2,v4l2 @ 0x2aa2fa0] Current input_channel: 0, input_name:
 Camera 0, input_std: 0
 [video4linux2,v4l2 @ 0x2aa2fa0] Querying the device for the current frame
 size
 [video4linux2,v4l2 @ 0x2aa2fa0] Setting frame size to 1024x768
 [h264 @ 0x2aa3990] missing picture in access unit with size 27
 [h264 @ 0x2aa3990] no frame!
 [h264 @ 0x2aa3990] missing picture in access unit with size 27
 [video4linux2,v4l2 @ 0x2aa2fa0] Non-increasing DTS in stream 0: packet 11
 with DTS 4777539060, packet 12 with DTS 4776498682
 ... more messages similar to the four above ...
 }}}


 What does work, however, is to let ffmpeg stream raw video from the camera
 and do transcoding (e.g. remove '-vcodec copy').  There are no messages
 about H264 issues and no messages about 'Non-increasing DTS in stream'.
 {{{
 $ ./ffmpeg -f v4l2 -i /dev/video0 -loglevel debug -y out.mkv
 [video4linux2,v4l2 @ 0x279a560] fd:3 capabilities:85200005
 [video4linux2,v4l2 @ 0x279a560] Current input_channel: 0, input_name:
 Camera 0, input_std: 0
 [video4linux2,v4l2 @ 0x279a560] Querying the device for the current frame
 size
 [video4linux2,v4l2 @ 0x279a560] Setting frame size to 1024x768
 [video4linux2,v4l2 @ 0x279a560] All info found
 Input #0, video4linux2,v4l2, from '/dev/video0':
   Duration: N/A, start: 5035.089288, bitrate: 235929 kb/s
     Stream #0:0, 1, 1/1000000: Video: rawvideo, 1 reference frame (I420 /
 0x30323449), yuv420p, 1024x768, 1/1000000, 235929 kb/s, 25 fps, 25 tbr,
 1000k tbn, 1000k tbc
 Successfully opened the file.
 Parsing a group of options: output file out.mkv.
 Successfully parsed a group of options.
 Opening an output file: out.mkv.
 Successfully opened the file.
 detected 4 logical cores
 [graph 0 input from stream 0:0 @ 0x2799e40] Setting 'video_size' to value
 '1024x768'
 [graph 0 input from stream 0:0 @ 0x2799e40] Setting 'pix_fmt' to value '0'
 [graph 0 input from stream 0:0 @ 0x2799e40] Setting 'time_base' to value
 '1/1000000'
 [graph 0 input from stream 0:0 @ 0x2799e40] Setting 'pixel_aspect' to
 value '0/1'
 [graph 0 input from stream 0:0 @ 0x2799e40] Setting 'sws_param' to value
 'flags=2'
 [graph 0 input from stream 0:0 @ 0x2799e40] Setting 'frame_rate' to value
 '25/1'
 [graph 0 input from stream 0:0 @ 0x2799e40] w:1024 h:768 pixfmt:yuv420p
 tb:1/1000000 fr:25/1 sar:0/1 sws_param:flags=2
 [format @ 0x278b5a0] compat: called with
 args=[yuv420p|yuvj420p|yuv422p|yuvj422p|yuv444p|yuvj444p|nv12|nv16]
 [format @ 0x278b5a0] Setting 'pix_fmts' to value
 'yuv420p|yuvj420p|yuv422p|yuvj422p|yuv444p|yuvj444p|nv12|nv16'
 [AVFilterGraph @ 0x279a1a0] query_formats: 4 queried, 3 merged, 0 already
 done, 0 delayed
 [libx264 @ 0x279cbe0] using mv_range_thread = 56
 [libx264 @ 0x279cbe0] using cpu capabilities: ARMv6 NEON
 [libx264 @ 0x279cbe0] profile High, level 3.1
 [libx264 @ 0x279cbe0] 264 - core 146 r2538 121396c - H.264/MPEG-4 AVC
 codec - Copyleft 2003-2015 - http://www.videolan.org/x264.html - options:
 cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1
 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1
 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=6
 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0
 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1
 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25
 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0
 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
 Output #0, matroska, to 'out.mkv':
   Metadata:
     encoder         : Lavf56.37.100
     Stream #0:0, 0, 1/1000: Video: h264 (libx264), -1 reference frame
 (H264 / 0x34363248), yuv420p, 1024x768, 1/25, q=-1--1, 25 fps, 1k tbn, 25
 tbc
     Metadata:
       encoder         : Lavc56.41.100 libx264
 Stream mapping:
   Stream #0:0 -> #0:0 (rawvideo (native) -> h264 (libx264))
 Press [q] to stop, [?] for help
 frame=    8 fps=1.7 q=-1.0 Lsize=      73kB time=00:00:00.96 bitrate=
 624.2kbits/s
 video:72kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB
 muxing overhead: 0.981397%
 Cliping frame in rate conversion by 0.000008
 [libx264 @ 0x279cbe0] frame=   0 QP=15.42 NAL=3 Slice:I Poc:0   I:3072 P:0
 SKIP:0    size=14432 bytes
 [matroska @ 0x279b810] Writing block at offset 642, size 15121, pts 0, dts
 -360, duration 40, keyframe 1
 [libx264 @ 0x279cbe0] frame=   1 QP=16.44 NAL=2 Slice:P Poc:2   I:694
 P:1087 SKIP:1291 size=9335 bytes
 [matroska @ 0x279b810] Writing block at offset 15771, size 9335, pts 200,
 dts -160, duration 40, keyframe 0
 [libx264 @ 0x279cbe0] frame=   2 QP=15.75 NAL=2 Slice:P Poc:4   I:578
 P:1079 SKIP:1415 size=9797 bytes
 [matroska @ 0x279b810] Writing block at offset 25113, size 9797, pts 360,
 dts 0, duration 40, keyframe 0
 [libx264 @ 0x279cbe0] frame=   3 QP=16.83 NAL=2 Slice:P Poc:6   I:211
 P:1271 SKIP:1590 size=6231 bytes
 [matroska @ 0x279b810] Writing block at offset 34917, size 6231, pts 560,
 dts 200, duration 40, keyframe 0
 [libx264 @ 0x279cbe0] frame=   4 QP=16.13 NAL=2 Slice:P Poc:8   I:496
 P:1283 SKIP:1293 size=10826 bytes
 [matroska @ 0x279b810] Writing block at offset 41155, size 10826, pts 720,
 dts 360, duration 40, keyframe 0
 [libx264 @ 0x279cbe0] frame=   5 QP=16.75 NAL=2 Slice:P Poc:10  I:158
 P:1280 SKIP:1634 size=5959 bytes
 [matroska @ 0x279b810] Writing block at offset 51988, size 5959, pts 920,
 dts 560, duration 40, keyframe 0
 [libx264 @ 0x279cbe0] frame=   6 QP=15.89 NAL=2 Slice:P Poc:12  I:246
 P:1270 SKIP:1556 size=7799 bytes
 [matroska @ 0x279b810] Writing block at offset 57954, size 7799, pts 1080,
 dts 720, duration 40, keyframe 0
 [libx264 @ 0x279cbe0] frame=   7 QP=16.11 NAL=2 Slice:P Poc:14  I:326
 P:1366 SKIP:1380 size=9112 bytes
 [matroska @ 0x279b810] Writing block at offset 65760, size 9112, pts 1280,
 dts 920, duration 40, keyframe 0
 [matroska @ 0x279b810] end duration = 1320
 frame=    8 fps=1.7 q=-1.0 Lsize=      73kB time=00:00:00.96 bitrate=
 624.2kbits/s
 video:72kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB
 muxing overhead: 0.981397%
 Input file #0 (/dev/video0):
   Input stream #0:0 (video): 8 packets read (9437184 bytes); 8 frames
 decoded;
   Total: 8 packets (9437184 bytes) demuxed
 Output file #0 (out.mkv):
   Output stream #0:0 (video): 8 frames encoded; 8 packets muxed (74180
 bytes);
   Total: 8 packets (74180 bytes) muxed
 8 frames successfully decoded, 0 decoding errors
 }}}


 FFprobe is also happy with raw video:
 {{{
 $ ./ffprobe -f v4l2 -input_format yuv420p -i  /dev/video0 -loglevel debug
 [video4linux2,v4l2 @ 0x3175fa0] fd:3 capabilities:85200005
 [video4linux2,v4l2 @ 0x3175fa0] Current input_channel: 0, input_name:
 Camera 0, input_std: 0
 [video4linux2,v4l2 @ 0x3175fa0] Querying the device for the current frame
 size
 [video4linux2,v4l2 @ 0x3175fa0] Setting frame size to 1024x768
 [video4linux2,v4l2 @ 0x3175fa0] All info found
 Input #0, video4linux2,v4l2, from '/dev/video0':
   Duration: N/A, start: 4947.198161, bitrate: 235929 kb/s
     Stream #0:0, 1, 1/1000000: Video: rawvideo, 1 reference frame (I420 /
 0x30323449), yuv420p, 1024x768, 1/1000000, 235929 kb/s, 25 fps, 25 tbr,
 1000k tbn, 1000k tbc
 }}}



 Since ticket #2882 was closed as fixed, v4l2_read_header() in
 libavdevice/v4l2.c contains:
     st->need_parsing = AVSTREAM_PARSE_HEADERS;

 If I change this to AVSTREAM_PARSE_FULL, as was suggested in an initial
 patch in attached to the ticket, ffprobe now works with -input_format
 h264:
 {{{
 $ ./ffprobe -f v4l2 -input_format h264 -i  /dev/video0 -loglevel debug
 [video4linux2,v4l2 @ 0x1ab5fa0] fd:3 capabilities:85200005
 [video4linux2,v4l2 @ 0x1ab5fa0] Current input_channel: 0, input_name:
 Camera 0, input_std: 0
 [video4linux2,v4l2 @ 0x1ab5fa0] Querying the device for the current frame
 size
 [video4linux2,v4l2 @ 0x1ab5fa0] Setting frame size to 1024x768
 [video4linux2,v4l2 @ 0x1ab5fa0] v4l2_read_header: turning on
 AVSTREAM_PARSE_FULL
 ...
 [video4linux2,v4l2 @ 0x1ab5fa0] All info found
 Input #0, video4linux2,v4l2, from '/dev/video0':
   Duration: N/A, start: 5774.535936, bitrate: N/A
     Stream #0:0, 8, 1/1000000: Video: h264 (High), 1 reference frame,
 yuv420p(left), 1024x768, 1/2000000, -4 kb/s, 25 fps, 25 tbr, 1000k tbn,
 2000k tbc
 }}}


 Also, FFmpeg appears to work much better and actually produces some output
 data.  While it no longer complains about H264 , it floods the screen with
 warnings about 'Non-monotonous DTS in output stream'.
 {{{
 $ ./ffmpeg -report  -f v4l2 -input_format h264  -i /dev/video0 -vcodec
 copy  -y -loglevel debug foo.mkv
 [video4linux2,v4l2 @ 0x19769e0] fd:4 capabilities:85200005
 [video4linux2,v4l2 @ 0x19769e0] Current input_channel: 0, input_name:
 Camera 0, input_std: 0
 [video4linux2,v4l2 @ 0x19769e0] Querying the device for the current frame
 size
 [video4linux2,v4l2 @ 0x19769e0] Setting frame size to 1024x768
 [video4linux2,v4l2 @ 0x19769e0] v4l2_read_header: turning on
 AVSTREAM_PARSE_FULL
 [video4linux2,v4l2 @ 0x19769e0] All info found
 Input #0, video4linux2,v4l2, from '/dev/video0':
   Duration: N/A, start: 6421.528593, bitrate: N/A
     Stream #0:0, 8, 1/1000000: Video: h264 (High), 1 reference frame,
 yuv420p(left), 1024x768, 1/2000000, -4 kb/s, 25 fps, 25 tbr, 1000k tbn,
 2000k tbc
 Successfully opened the file.
 Parsing a group of options: output file foo.mkv.
 Applying option vcodec (force video codec ('copy' to copy stream)) with
 argument copy.
 Successfully parsed a group of options.
 Opening an output file: foo.mkv.
 Successfully opened the file.
 [matroska @ 0x19eeab0] Codec for stream 0 does not use global headers but
 container format requires global headers
 Output #0, matroska, to 'foo.mkv':
   Metadata:
     encoder         : Lavf56.37.100
     Stream #0:0, 0, 1/1000: Video: h264, 1 reference frame (H264 /
 0x34363248), yuv420p(left), 1024x768 (0x0), 1/1000000, q=2-31, -4 kb/s, 25
 fps, 25 tbr, 1k tbn, 1000k tbc
 Stream mapping:
   Stream #0:0 -> #0:0 (copy)
 Press [q] to stop, [?] for help
 [matroska @ 0x19eeab0] Writing block at offset 562, size 511, pts 0, dts
 0, duration 0, keyframe 1
 [matroska @ 0x19eeab0] Writing block at offset 1080, size 593, pts 0, dts
 0, duration 0, keyframe 0
 [matroska @ 0x19eeab0] Writing block at offset 1680, size 672, pts 40, dts
 40, duration 0, keyframe 0
 [matroska @ 0x19eeab0] Writing block at offset 2359, size 604, pts 80, dts
 80, duration 0, keyframe 0
 [matroska @ 0x19eeab0] Writing block at offset 2970, size 756, pts 120,
 dts 120, duration 0, keyframe 0
 [matroska @ 0x19eeab0] Writing block at offset 3733, size 1013, pts 160,
 dts 160, duration 0, keyframe 0
 [matroska @ 0x19eeab0] Writing block at offset 4753, size 926, pts 200,
 dts 200, duration 0, keyframe 0
 [matroska @ 0x19eeab0] Writing block at offset 5686, size 1062, pts 240,
 dts 240, duration 0, keyframe 0
 [matroska @ 0x19eeab0] Writing block at offset 6755, size 1657, pts 280,
 dts 280, duration 0, keyframe 0
 [matroska @ 0x19eeab0] Writing block at offset 8419, size 2399, pts 320,
 dts 320, duration 0, keyframe 0
 [matroska @ 0x19eeab0] Starting new cluster at offset 10825 bytes, pts
 1400dts 1400
 [matroska @ 0x19eeab0] Writing block at offset 10841, size 1853, pts 1400,
 dts 1400, duration 0, keyframe 1
 [matroska @ 0x19eeab0] Non-monotonous DTS in output stream 0:0; previous:
 1400, current: 400; changing to 1400. This may result in incorrect
 timestamps in the output file.
 [matroska @ 0x19eeab0] Writing block at offset 12701, size 1687, pts 1400,
 dts 1400, duration 0, keyframe 0
 [matroska @ 0x19eeab0] Non-monotonous DTS in output stream 0:0; previous:
 1400, current: 440; changing to 1400. This may result in incorrect
 timestamps in the output file.
 [matroska @ 0x19eeab0] Writing block at offset 14395, size 2349, pts 1400,
 dts 1400, duration 0, keyframe 0
 ...
 [matroska @ 0x19eeab0] end duration = 2600
 frame=   50 fps= 30 q=-1.0 Lsize=     134kB time=00:00:02.60 bitrate=
 423.4kbits/s
 video:133kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB
 muxing overhead: 0.789512%
 Input file #0 (/dev/video0):
   Input stream #0:0 (video): 50 packets read (136540 bytes);
   Total: 50 packets (136540 bytes) demuxed
 Output file #0 (foo.mkv):
   Output stream #0:0 (video): 50 packets muxed (136540 bytes);
   Total: 50 packets (136540 bytes) muxed
 0 frames successfully decoded, 0 decoding errors
 }}}



 For reference, here is the complete log from '-f v4l2 -input_format h264
 ... -vcodec copy' that doesn't work for me (with st->need_parsing =
 AVSTREAM_PARSE_HEADERS per ticket #2882):
 {{{
 $ rm -f foo.mkv
 $ ./ffmpeg -report  -f v4l2 -input_format h264  -i /dev/video0 -vcodec
 copy -loglevel debug -y foo.mkv
 ffmpeg started on 2015-06-19 at 22:06:53
 Report written to "ffmpeg-20150619-220653.log"
 ffmpeg version N-73009-gd1dce1c Copyright (c) 2000-2015 the FFmpeg
 developers
   built with gcc 4.6 (Debian 4.6.3-14+rpi1)
   configuration: --prefix=/usr/local --extra-cflags=-I/usr/local/includes
 --extra-ldflags=-L/usr/local/lib --disable-doc --enable-gpl --enable-
 libfreetype --enable-libmp3lame --enable-libx264 --enable-libv4l2
 --enable-fontconfig --enable-libfreetype --enable-nonfree --enable-libfaac
 --enable-libfdk-aac --disable-libvpx
   libavutil      54. 27.100 / 54. 27.100
   libavcodec     56. 41.100 / 56. 41.100
   libavformat    56. 37.100 / 56. 37.100
   libavdevice    56.  4.100 / 56.  4.100
   libavfilter     5. 17.100 /  5. 17.100
   libswscale      3.  1.101 /  3.  1.101
   libswresample   1.  2.100 /  1.  2.100
   libpostproc    53.  3.100 / 53.  3.100
 Splitting the commandline.
 Reading option '-report' ... matched as option 'report' (generate a
 report) with argument '1'.
 Reading option '-f' ... matched as option 'f' (force format) with argument
 'v4l2'.
 Reading option '-input_format' ... matched as AVOption 'input_format' with
 argument 'h264'.
 Reading option '-i' ... matched as input file with argument '/dev/video0'.
 Reading option '-vcodec' ... matched as option 'vcodec' (force video codec
 ('copy' to copy stream)) with argument 'copy'.
 Reading option '-loglevel' ... matched as option 'loglevel' (set logging
 level) with argument 'debug'.
 Reading option '-y' ... matched as option 'y' (overwrite output files)
 with argument '1'.
 Reading option 'foo.mkv' ... matched as output file.
 Finished splitting the commandline.
 Parsing a group of options: global .
 Applying option report (generate a report) with argument 1.
 Applying option loglevel (set logging level) with argument debug.
 Applying option y (overwrite output files) with argument 1.
 Successfully parsed a group of options.
 Parsing a group of options: input file /dev/video0.
 Applying option f (force format) with argument v4l2.
 Successfully parsed a group of options.
 Opening an input file: /dev/video0.
 [video4linux2,v4l2 @ 0x19149e0] fd:4 capabilities:85200005
 [video4linux2,v4l2 @ 0x19149e0] Current input_channel: 0, input_name:
 Camera 0, input_std: 0
 [video4linux2,v4l2 @ 0x19149e0] Querying the device for the current frame
 size
 [video4linux2,v4l2 @ 0x19149e0] Setting frame size to 1024x768
 [h264 @ 0x1915230] missing picture in access unit with size 27
 [h264 @ 0x1915230] no frame!
 [h264 @ 0x1915230] missing picture in access unit with size 27
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 11
 with DTS 7795044931, packet 12 with DTS 7794004657
 [h264 @ 0x1915230] missing picture in access unit with size 27
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 22
 with DTS 7795444758, packet 23 with DTS 7794404446
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 26
 with DTS 7794524382, packet 27 with DTS 0
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 27
 with DTS 0, packet 28 with DTS 0
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 28
 with DTS 0, packet 29 with DTS 0
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 29
 with DTS 0, packet 30 with DTS 0
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 30
 with DTS 0, packet 31 with DTS 0
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 31
 with DTS 0, packet 32 with DTS 0
 [h264 @ 0x1915230] missing picture in access unit with size 27
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 32
 with DTS 0, packet 33 with DTS 0
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 33
 with DTS 0, packet 34 with DTS 0
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 34
 with DTS 0, packet 35 with DTS 0
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 35
 with DTS 0, packet 36 with DTS 0
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 36
 with DTS 0, packet 37 with DTS 0
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 37
 with DTS 0, packet 38 with DTS 0
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 38
 with DTS 0, packet 39 with DTS 0
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 39
 with DTS 0, packet 40 with DTS 0
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 40
 with DTS 0, packet 41 with DTS 0
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 41
 with DTS 0, packet 42 with DTS 0
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 42
 with DTS 0, packet 43 with DTS 0
 [h264 @ 0x1915230] missing picture in access unit with size 27
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 43
 with DTS 0, packet 44 with DTS 0
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 44
 with DTS 0, packet 45 with DTS 0
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 45
 with DTS 0, packet 46 with DTS 0
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 46
 with DTS 0, packet 47 with DTS 0
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 47
 with DTS 0, packet 48 with DTS 0
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 48
 with DTS 0, packet 49 with DTS 0
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 49
 with DTS 0, packet 50 with DTS 0
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 50
 with DTS 0, packet 51 with DTS 0
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 51
 with DTS 0, packet 52 with DTS 0
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 52
 with DTS 0, packet 53 with DTS 0
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 53
 with DTS 0, packet 54 with DTS 0
 [h264 @ 0x1915230] missing picture in access unit with size 27
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 54
 with DTS 0, packet 55 with DTS 0
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 55
 with DTS 0, packet 56 with DTS 0
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 56
 with DTS 0, packet 57 with DTS 0
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 57
 with DTS 0, packet 58 with DTS 0
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 58
 with DTS 0, packet 59 with DTS 0
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 59
 with DTS 0, packet 60 with DTS 0
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 60
 with DTS 0, packet 61 with DTS 0
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 61
 with DTS 0, packet 62 with DTS 0
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 62
 with DTS 0, packet 63 with DTS 0
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 63
 with DTS 0, packet 64 with DTS 0
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 64
 with DTS 0, packet 65 with DTS 0
 [h264 @ 0x1915230] missing picture in access unit with size 27
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 65
 with DTS 0, packet 66 with DTS 0
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 66
 with DTS 0, packet 67 with DTS 0
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 67
 with DTS 0, packet 68 with DTS 0
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 68
 with DTS 0, packet 69 with DTS 0
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 69
 with DTS 0, packet 70 with DTS 0
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 70
 with DTS 0, packet 71 with DTS 0
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 71
 with DTS 0, packet 72 with DTS 0
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 72
 with DTS 0, packet 73 with DTS 0
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 73
 with DTS 0, packet 74 with DTS 0
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 74
 with DTS 0, packet 75 with DTS 0
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 75
 with DTS 0, packet 76 with DTS 0
 [h264 @ 0x1915230] missing picture in access unit with size 27
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 76
 with DTS 0, packet 77 with DTS 0
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 77
 with DTS 0, packet 78 with DTS 0
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 78
 with DTS 0, packet 79 with DTS 0
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 79
 with DTS 0, packet 80 with DTS 0
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 80
 with DTS 0, packet 81 with DTS 0
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 81
 with DTS 0, packet 82 with DTS 0
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 82
 with DTS 0, packet 83 with DTS 0
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 83
 with DTS 0, packet 84 with DTS 0
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 84
 with DTS 0, packet 85 with DTS 0
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 85
 with DTS 0, packet 86 with DTS 0
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 86
 with DTS 0, packet 87 with DTS 0
 [h264 @ 0x1915230] missing picture in access unit with size 27
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 87
 with DTS 0, packet 88 with DTS 0
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 88
 with DTS 0, packet 89 with DTS 0
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 89
 with DTS 0, packet 90 with DTS 0
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 90
 with DTS 0, packet 91 with DTS 0
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 91
 with DTS 0, packet 92 with DTS 0
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 92
 with DTS 0, packet 93 with DTS 0
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 93
 with DTS 0, packet 94 with DTS 0
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 94
 with DTS 0, packet 95 with DTS 0
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 95
 with DTS 0, packet 96 with DTS 0
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 96
 with DTS 0, packet 97 with DTS 0
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 97
 with DTS 0, packet 98 with DTS 0
 [h264 @ 0x1915230] missing picture in access unit with size 27
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 98
 with DTS 0, packet 99 with DTS 0
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 99
 with DTS 0, packet 100 with DTS 0
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 100
 with DTS 0, packet 101 with DTS 0
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 101
 with DTS 0, packet 102 with DTS 0
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 102
 with DTS 0, packet 103 with DTS 0
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 103
 with DTS 0, packet 104 with DTS 0
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 104
 with DTS 0, packet 105 with DTS 0
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 105
 with DTS 0, packet 106 with DTS 0
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 106
 with DTS 0, packet 107 with DTS 0
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 107
 with DTS 0, packet 108 with DTS 0
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 108
 with DTS 0, packet 109 with DTS 0
 [h264 @ 0x1915230] missing picture in access unit with size 27
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 109
 with DTS 0, packet 110 with DTS 0
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 110
 with DTS 0, packet 111 with DTS 0
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 111
 with DTS 0, packet 112 with DTS 0
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 112
 with DTS 0, packet 113 with DTS 0
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 113
 with DTS 0, packet 114 with DTS 0
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 114
 with DTS 0, packet 115 with DTS 0
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 115
 with DTS 0, packet 116 with DTS 0
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 116
 with DTS 0, packet 117 with DTS 0
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 117
 with DTS 0, packet 118 with DTS 0
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 118
 with DTS 0, packet 119 with DTS 0
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 119
 with DTS 0, packet 120 with DTS 0
 [h264 @ 0x1915230] missing picture in access unit with size 27
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 120
 with DTS 0, packet 121 with DTS 0
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 121
 with DTS 0, packet 122 with DTS 0
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 122
 with DTS 0, packet 123 with DTS 0
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 123
 with DTS 0, packet 124 with DTS 0
 [video4linux2,v4l2 @ 0x19149e0] Non-increasing DTS in stream 0: packet 124
 with DTS 0, packet 125 with DTS 0
 [video4linux2,v4l2 @ 0x19149e0] max_analyze_duration 5000000 reached at
 5000000 microseconds
 Input #0, video4linux2,v4l2, from '/dev/video0':
   Duration: N/A, start: -140454816.843517, bitrate: N/A
     Stream #0:0, 125, 1/1000000: Video: h264 (High), 1 reference frame,
 yuv420p(left), 1024x768, 1/2000000, -4 kb/s, 25 fps, 25 tbr, 1000k tbn,
 2000k tbc
 Successfully opened the file.
 Parsing a group of options: output file foo.mkv.
 Applying option vcodec (force video codec ('copy' to copy stream)) with
 argument copy.
 Successfully parsed a group of options.
 Opening an output file: foo.mkv.
 Successfully opened the file.
 [matroska @ 0x1990230] Codec for stream 0 does not use global headers but
 container format requires global headers
 Output #0, matroska, to 'foo.mkv':
   Metadata:
     encoder         : Lavf56.37.100
     Stream #0:0, 0, 1/1000: Video: h264, 1 reference frame (H264 /
 0x34363248), yuv420p(left), 1024x768 (0x0), 1/1000000, q=2-31, -4 kb/s, 25
 fps, 25 tbr, 1k tbn, 1000k tbc
 Stream mapping:
   Stream #0:0 -> #0:0 (copy)
 Press [q] to stop, [?] for help
 [matroska @ 0x1990230] Writing block at offset 529, size 228, pts 0, dts
 0, duration 0, keyframe 1
 DTS 140462610488363, next:0 st:0 invalid dropping
 PTS 140462610488363, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 764, size 31, pts 0, dts 0,
 duration 0, keyframe 0
 DTS 140462610528342, next:0 st:0 invalid dropping
 PTS 140462610528342, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 801, size 31, pts 0, dts 0,
 duration 0, keyframe 0
 DTS 140462610568321, next:0 st:0 invalid dropping
 PTS 140462610568321, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 838, size 31, pts 0, dts 0,
 duration 0, keyframe 0
 DTS 140462610608300, next:0 st:0 invalid dropping
 PTS 140462610608300, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 875, size 31, pts 0, dts 0,
 duration 0, keyframe 0
 DTS 140462610648279, next:0 st:0 invalid dropping
 PTS 140462610648279, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 912, size 31, pts 0, dts 0,
 duration 0, keyframe 0
 DTS 140462610688259, next:0 st:0 invalid dropping
 PTS 140462610688259, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 949, size 253, pts 0, dts
 0, duration 0, keyframe 0
 DTS 140462610728237, next:0 st:0 invalid dropping
 PTS 140462610728237, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 1209, size 198, pts 0, dts
 0, duration 0, keyframe 0
 DTS 140462610768216, next:0 st:0 invalid dropping
 PTS 140462610768216, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 1414, size 371, pts 0, dts
 0, duration 0, keyframe 0
 DTS 140462610808195, next:0 st:0 invalid dropping
 PTS 140462610808195, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 1792, size 704, pts 0, dts
 0, duration 0, keyframe 0
 DTS 140462611888448, next:0 st:0 invalid dropping
 PTS 140462611888448, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 2503, size 27, pts 0, dts
 0, duration 0, keyframe 0
 DTS 140462610848174, next:0 st:0 invalid dropping
 PTS 140462610848174, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 2536, size 500, pts 0, dts
 0, duration 0, keyframe 1
 DTS 140462610888158, next:0 st:0 invalid dropping
 PTS 140462610888158, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 3043, size 464, pts 0, dts
 0, duration 0, keyframe 0
 DTS 140462610928131, next:0 st:0 invalid dropping
 PTS 140462610928131, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 3514, size 369, pts 0, dts
 0, duration 0, keyframe 0
 DTS 140462610968110, next:0 st:0 invalid dropping
 PTS 140462610968110, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 3890, size 674, pts 0, dts
 0, duration 0, keyframe 0
 DTS 140462611008089, next:0 st:0 invalid dropping
 PTS 140462611008089, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 4571, size 1726, pts 0, dts
 0, duration 0, keyframe 0
 DTS 140462611048068, next:0 st:0 invalid dropping
 PTS 140462611048068, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 6304, size 991, pts 0, dts
 0, duration 0, keyframe 0
 DTS 140462611088047, next:0 st:0 invalid dropping
 PTS 140462611088047, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 7302, size 761, pts 0, dts
 0, duration 0, keyframe 0
 DTS 140462611128026, next:0 st:0 invalid dropping
 PTS 140462611128026, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 8070, size 746, pts 0, dts
 0, duration 0, keyframe 0
 DTS 140462611168005, next:0 st:0 invalid dropping
 PTS 140462611168005, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 8823, size 740, pts 0, dts
 0, duration 0, keyframe 0
 DTS 140462611207984, next:0 st:0 invalid dropping
 PTS 140462611207984, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 9570, size 648, pts 0, dts
 0, duration 0, keyframe 0
 DTS 140462612288275, next:0 st:0 invalid dropping
 PTS 140462612288275, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 10225, size 27, pts 0, dts
 0, duration 0, keyframe 0
 DTS 140462611247963, next:0 st:0 invalid dropping
 PTS 140462611247963, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Starting new cluster at offset 10258 bytes, pts
 0dts 0
 [matroska @ 0x1990230] Writing block at offset 10273, size 1507, pts 0,
 dts 0, duration 0, keyframe 1
 DTS 140462611287941, next:0 st:0 invalid dropping
 PTS 140462611287941, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 11787, size 693, pts 0, dts
 0, duration 0, keyframe 0
 DTS 140462611327920, next:0 st:0 invalid dropping
 PTS 140462611327920, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 12487, size 683, pts 0, dts
 0, duration 0, keyframe 0
 DTS 140462611367899, next:0 st:0 invalid dropping
 PTS 140462611367899, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 13177, size 693, pts 0, dts
 0, duration 0, keyframe 0
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 13877, size 618, pts 0, dts
 0, duration 0, keyframe 0
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 14502, size 633, pts 0, dts
 0, duration 0, keyframe 0
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 15142, size 674, pts 0, dts
 0, duration 0, keyframe 0
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 15823, size 684, pts 0, dts
 0, duration 0, keyframe 0
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 16514, size 668, pts 0, dts
 0, duration 0, keyframe 0
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 17189, size 715, pts 0, dts
 0, duration 0, keyframe 0
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 17911, size 27, pts 0, dts
 0, duration 0, keyframe 0
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Starting new cluster at offset 17944 bytes, pts
 0dts 0
 [matroska @ 0x1990230] Writing block at offset 17959, size 1780, pts 0,
 dts 0, duration 0, keyframe 1
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 19746, size 783, pts 0, dts
 0, duration 0, keyframe 0
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 20536, size 753, pts 0, dts
 0, duration 0, keyframe 0
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 21296, size 804, pts 0, dts
 0, duration 0, keyframe 0
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 22107, size 735, pts 0, dts
 0, duration 0, keyframe 0
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 22849, size 792, pts 0, dts
 0, duration 0, keyframe 0
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 23648, size 803, pts 0, dts
 0, duration 0, keyframe 0
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 24458, size 863, pts 0, dts
 0, duration 0, keyframe 0
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 25328, size 876, pts 0, dts
 0, duration 0, keyframe 0
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 26211, size 907, pts 0, dts
 0, duration 0, keyframe 0
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 27125, size 27, pts 0, dts
 0, duration 0, keyframe 0
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Starting new cluster at offset 27158 bytes, pts
 0dts 0
 [matroska @ 0x1990230] Writing block at offset 27173, size 2049, pts 0,
 dts 0, duration 0, keyframe 1
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 29229, size 1063, pts 0,
 dts 0, duration 0, keyframe 0
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 30299, size 888, pts 0, dts
 0, duration 0, keyframe 0
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 31194, size 846, pts 0, dts
 0, duration 0, keyframe 0
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 32047, size 824, pts 0, dts
 0, duration 0, keyframe 0
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 32878, size 852, pts 0, dts
 0, duration 0, keyframe 0
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 33737, size 878, pts 0, dts
 0, duration 0, keyframe 0
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 34622, size 901, pts 0, dts
 0, duration 0, keyframe 0
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 35530, size 885, pts 0, dts
 0, duration 0, keyframe 0
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 36422, size 909, pts 0, dts
 0, duration 0, keyframe 0
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 37338, size 27, pts 0, dts
 0, duration 0, keyframe 0
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Starting new cluster at offset 37371 bytes, pts
 0dts 0
 [matroska @ 0x1990230] Writing block at offset 37386, size 2091, pts 0,
 dts 0, duration 0, keyframe 1
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 39484, size 1008, pts 0,
 dts 0, duration 0, keyframe 0
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 40499, size 947, pts 0, dts
 0, duration 0, keyframe 0
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 41453, size 990, pts 0, dts
 0, duration 0, keyframe 0
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 42450, size 935, pts 0, dts
 0, duration 0, keyframe 0
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 43392, size 981, pts 0, dts
 0, duration 0, keyframe 0
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 44380, size 934, pts 0, dts
 0, duration 0, keyframe 0
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 45321, size 932, pts 0, dts
 0, duration 0, keyframe 0
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 46260, size 980, pts 0, dts
 0, duration 0, keyframe 0
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 47247, size 1009, pts 0,
 dts 0, duration 0, keyframe 0
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 48263, size 27, pts 0, dts
 0, duration 0, keyframe 0
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Starting new cluster at offset 48296 bytes, pts
 0dts 0
 [matroska @ 0x1990230] Writing block at offset 48311, size 2201, pts 0,
 dts 0, duration 0, keyframe 1
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 50519, size 1207, pts 0,
 dts 0, duration 0, keyframe 0
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 51733, size 1286, pts 0,
 dts 0, duration 0, keyframe 0
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 53026, size 1405, pts 0,
 dts 0, duration 0, keyframe 0
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 54438, size 1437, pts 0,
 dts 0, duration 0, keyframe 0
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 55882, size 1369, pts 0,
 dts 0, duration 0, keyframe 0
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 57258, size 1356, pts 0,
 dts 0, duration 0, keyframe 0
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 58621, size 1258, pts 0,
 dts 0, duration 0, keyframe 0
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 59886, size 1334, pts 0,
 dts 0, duration 0, keyframe 0
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 61227, size 1437, pts 0,
 dts 0, duration 0, keyframe 0
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 62671, size 27, pts 0, dts
 0, duration 0, keyframe 0
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Starting new cluster at offset 62704 bytes, pts
 0dts 0
 [matroska @ 0x1990230] Writing block at offset 62719, size 2627, pts 0,
 dts 0, duration 0, keyframe 1
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 65353, size 1644, pts 0,
 dts 0, duration 0, keyframe 0
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 67004, size 1517, pts 0,
 dts 0, duration 0, keyframe 0
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 68528, size 1550, pts 0,
 dts 0, duration 0, keyframe 0
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 70085, size 1525, pts 0,
 dts 0, duration 0, keyframe 0
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 71617, size 1474, pts 0,
 dts 0, duration 0, keyframe 0
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 73098, size 1547, pts 0,
 dts 0, duration 0, keyframe 0
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 74652, size 1418, pts 0,
 dts 0, duration 0, keyframe 0
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 76077, size 1416, pts 0,
 dts 0, duration 0, keyframe 0
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 77500, size 1398, pts 0,
 dts 0, duration 0, keyframe 0
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 78905, size 27, pts 0, dts
 0, duration 0, keyframe 0
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Starting new cluster at offset 78938 bytes, pts
 0dts 0
 [matroska @ 0x1990230] Writing block at offset 78953, size 2650, pts 0,
 dts 0, duration 0, keyframe 1
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 81610, size 1561, pts 0,
 dts 0, duration 0, keyframe 0
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 83178, size 1398, pts 0,
 dts 0, duration 0, keyframe 0
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 84583, size 1533, pts 0,
 dts 0, duration 0, keyframe 0
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 86123, size 1412, pts 0,
 dts 0, duration 0, keyframe 0
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 87542, size 1406, pts 0,
 dts 0, duration 0, keyframe 0
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 88955, size 1374, pts 0,
 dts 0, duration 0, keyframe 0
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 90336, size 1357, pts 0,
 dts 0, duration 0, keyframe 0
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 91700, size 1260, pts 0,
 dts 0, duration 0, keyframe 0
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 92967, size 1277, pts 0,
 dts 0, duration 0, keyframe 0
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 94251, size 27, pts 0, dts
 0, duration 0, keyframe 0
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Starting new cluster at offset 94284 bytes, pts
 0dts 0
 [matroska @ 0x1990230] Writing block at offset 94299, size 2419, pts 0,
 dts 0, duration 0, keyframe 1
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 96725, size 1283, pts 0,
 dts 0, duration 0, keyframe 0
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 98015, size 1244, pts 0,
 dts 0, duration 0, keyframe 0
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 99266, size 1183, pts 0,
 dts 0, duration 0, keyframe 0
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 100456, size 1202, pts 0,
 dts 0, duration 0, keyframe 0
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 101665, size 1202, pts 0,
 dts 0, duration 0, keyframe 0
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 102874, size 1353, pts 0,
 dts 0, duration 0, keyframe 0
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 104234, size 1417, pts 0,
 dts 0, duration 0, keyframe 0
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 105658, size 1497, pts 0,
 dts 0, duration 0, keyframe 0
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 107162, size 1581, pts 0,
 dts 0, duration 0, keyframe 0
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 108750, size 27, pts 0, dts
 0, duration 0, keyframe 0
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Starting new cluster at offset 108783 bytes, pts
 0dts 0
 [matroska @ 0x1990230] Writing block at offset 108798, size 2819, pts 0,
 dts 0, duration 0, keyframe 1
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 111624, size 1498, pts 0,
 dts 0, duration 0, keyframe 0
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 113129, size 1332, pts 0,
 dts 0, duration 0, keyframe 0
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 114468, size 1288, pts 0,
 dts 0, duration 0, keyframe 0
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 115763, size 1252, pts 0,
 dts 0, duration 0, keyframe 0
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 117022, size 1327, pts 0,
 dts 0, duration 0, keyframe 0
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 118356, size 1237, pts 0,
 dts 0, duration 0, keyframe 0
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 119600, size 1246, pts 0,
 dts 0, duration 0, keyframe 0
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 120853, size 1179, pts 0,
 dts 0, duration 0, keyframe 0
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 122039, size 1186, pts 0,
 dts 0, duration 0, keyframe 0
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 123232, size 27, pts 0, dts
 0, duration 0, keyframe 0
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Starting new cluster at offset 123265 bytes, pts
 0dts 0
 [matroska @ 0x1990230] Writing block at offset 123280, size 2460, pts 0,
 dts 0, duration 0, keyframe 1
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 125747, size 1259, pts 0,
 dts 0, duration 0, keyframe 0
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 127013, size 1179, pts 0,
 dts 0, duration 0, keyframe 0
 DTS 140454816843517, next:0 st:0 invalid dropping
 PTS 140454816843517, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 128199, size 1164, pts 0,
 dts 0, duration 0, keyframe 0
 DTS 140462615005979, next:0 st:0 invalid dropping
 PTS 140462615005979, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 129370, size 1131, pts 0,
 dts 0, duration 0, keyframe 0
 DTS 140462615045959, next:0 st:0 invalid dropping
 PTS 140462615045959, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 130508, size 1195, pts 0,
 dts 0, duration 0, keyframe 0
 DTS 140462615085937, next:0 st:0 invalid dropping
 PTS 140462615085937, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 131710, size 1053, pts 0,
 dts 0, duration 0, keyframe 0
 DTS 140462615125916, next:0 st:0 invalid dropping
 PTS 140462615125916, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 132770, size 1072, pts 0,
 dts 0, duration 0, keyframe 0
 DTS 140462615165895, next:0 st:0 invalid dropping
 PTS 140462615165895, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 133849, size 1065, pts 0,
 dts 0, duration 0, keyframe 0
 DTS 140462615205874, next:0 st:0 invalid dropping
 PTS 140462615205874, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 134921, size 1008, pts 0,
 dts 0, duration 0, keyframe 0
 [NULL @ 0x1915230] missing picture in access unit with size 27
 DTS 140462616286169, next:0 st:0 invalid dropping
 PTS 140462616286169, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 135936, size 27, pts 0, dts
 0, duration 0, keyframe 0
 DTS 140462615245853, next:0 st:0 invalid dropping
 PTS 140462615245853, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Starting new cluster at offset 135969 bytes, pts
 0dts 0
 [matroska @ 0x1990230] Writing block at offset 135984, size 2200, pts 0,
 dts 0, duration 0, keyframe 1
 DTS 140462615285832, next:0 st:0 invalid dropping
 PTS 140462615285832, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 138191, size 1113, pts 0,
 dts 0, duration 0, keyframe 0
 DTS 140462615325811, next:0 st:0 invalid dropping
 PTS 140462615325811, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 139311, size 1120, pts 0,
 dts 0, duration 0, keyframe 0
 DTS 140462615365790, next:0 st:0 invalid dropping
 PTS 140462615365790, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 140438, size 1076, pts 0,
 dts 0, duration 0, keyframe 0
 DTS 140462615405769, next:0 st:0 invalid dropping
 PTS 140462615405769, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 141521, size 1100, pts 0,
 dts 0, duration 0, keyframe 0
 DTS 140462615445748, next:0 st:0 invalid dropping
 PTS 140462615445748, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 142628, size 1145, pts 0,
 dts 0, duration 0, keyframe 0
 DTS 140462615485726, next:0 st:0 invalid dropping
 PTS 140462615485726, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 143780, size 1192, pts 0,
 dts 0, duration 0, keyframe 0
 DTS 140462615525706, next:0 st:0 invalid dropping0:00:00.00 bitrate=N/A
 PTS 140462615525706, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 144979, size 1196, pts 0,
 dts 0, duration 0, keyframe 0
 DTS 140462615565684, next:0 st:0 invalid dropping
 PTS 140462615565684, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 146182, size 1229, pts 0,
 dts 0, duration 0, keyframe 0
 DTS 140462615605663, next:0 st:0 invalid dropping
 PTS 140462615605663, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 147418, size 1221, pts 0,
 dts 0, duration 0, keyframe 0
 [NULL @ 0x1915230] missing picture in access unit with size 27
 DTS 140462616685968, next:0 st:0 invalid dropping
 PTS 140462616685968, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 148646, size 27, pts 0, dts
 0, duration 0, keyframe 0
 DTS 140462615645642, next:0 st:0 invalid dropping
 PTS 140462615645642, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Starting new cluster at offset 148679 bytes, pts
 0dts 0
 [matroska @ 0x1990230] Writing block at offset 148694, size 2479, pts 0,
 dts 0, duration 0, keyframe 1
 DTS 140462615685621, next:0 st:0 invalid dropping
 PTS 140462615685621, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 151180, size 1337, pts 0,
 dts 0, duration 0, keyframe 0
 DTS 140462615725600, next:0 st:0 invalid dropping
 PTS 140462615725600, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 152524, size 1210, pts 0,
 dts 0, duration 0, keyframe 0
 DTS 140462615765579, next:0 st:0 invalid dropping
 PTS 140462615765579, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 153741, size 1271, pts 0,
 dts 0, duration 0, keyframe 0
 DTS 140462615805558, next:0 st:0 invalid dropping
 PTS 140462615805558, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 155019, size 1309, pts 0,
 dts 0, duration 0, keyframe 0
 DTS 140462615845537, next:0 st:0 invalid dropping
 PTS 140462615845537, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 156335, size 1283, pts 0,
 dts 0, duration 0, keyframe 0
 DTS 140462615885515, next:0 st:0 invalid dropping
 PTS 140462615885515, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 157625, size 1404, pts 0,
 dts 0, duration 0, keyframe 0
 DTS 140462615925494, next:0 st:0 invalid dropping
 PTS 140462615925494, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 159036, size 1480, pts 0,
 dts 0, duration 0, keyframe 0
 DTS 140462615965473, next:0 st:0 invalid dropping
 PTS 140462615965473, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 160523, size 1519, pts 0,
 dts 0, duration 0, keyframe 0
 DTS 140462616005452, next:0 st:0 invalid dropping0:00:00.00 bitrate=N/A
 PTS 140462616005452, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 162049, size 1534, pts 0,
 dts 0, duration 0, keyframe 0
 [NULL @ 0x1915230] missing picture in access unit with size 27
 DTS 140462617085749, next:0 st:0 invalid dropping
 PTS 140462617085749, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 163590, size 27, pts 0, dts
 0, duration 0, keyframe 0
 DTS 140462616045431, next:0 st:0 invalid dropping
 PTS 140462616045431, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Starting new cluster at offset 163623 bytes, pts
 0dts 0
 [matroska @ 0x1990230] Writing block at offset 163638, size 2731, pts 0,
 dts 0, duration 0, keyframe 1
 DTS 140462616085410, next:0 st:0 invalid dropping
 PTS 140462616085410, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 166376, size 1550, pts 0,
 dts 0, duration 0, keyframe 0
 DTS 140462616125389, next:0 st:0 invalid dropping
 PTS 140462616125389, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 167933, size 1298, pts 0,
 dts 0, duration 0, keyframe 0
 DTS 140462616165368, next:0 st:0 invalid dropping
 PTS 140462616165368, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 169238, size 1313, pts 0,
 dts 0, duration 0, keyframe 0
 DTS 140462616205347, next:0 st:0 invalid dropping
 PTS 140462616205347, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 170558, size 1202, pts 0,
 dts 0, duration 0, keyframe 0
 DTS 140462616245325, next:0 st:0 invalid dropping
 PTS 140462616245325, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 171767, size 1174, pts 0,
 dts 0, duration 0, keyframe 0
 DTS 140462616285305, next:0 st:0 invalid dropping
 PTS 140462616285305, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 172948, size 1172, pts 0,
 dts 0, duration 0, keyframe 0
 DTS 140462616325284, next:0 st:0 invalid dropping
 PTS 140462616325284, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 174127, size 1237, pts 0,
 dts 0, duration 0, keyframe 0
 DTS 140462616365262, next:0 st:0 invalid dropping
 PTS 140462616365262, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 175371, size 1162, pts 0,
 dts 0, duration 0, keyframe 0
 DTS 140462616405241, next:0 st:0 invalid dropping
 PTS 140462616405241, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 176540, size 1156, pts 0,
 dts 0, duration 0, keyframe 0
 [NULL @ 0x1915230] missing picture in access unit with size 27
 DTS 140462617485525, next:0 st:0 invalid dropping
 PTS 140462617485525, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 177703, size 27, pts 0, dts
 0, duration 0, keyframe 0
 DTS 140462616445220, next:0 st:0 invalid dropping
 PTS 140462616445220, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Starting new cluster at offset 177736 bytes, pts
 0dts 0
 [matroska @ 0x1990230] Writing block at offset 177751, size 2341, pts 0,
 dts 0, duration 0, keyframe 1
 DTS 140462616485199, next:0 st:0 invalid dropping
 PTS 140462616485199, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 180099, size 1193, pts 0,
 dts 0, duration 0, keyframe 0
 DTS 140462616525178, next:0 st:0 invalid dropping0:00:00.00 bitrate=N/A
 PTS 140462616525178, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 181299, size 1139, pts 0,
 dts 0, duration 0, keyframe 0
 DTS 140462616565157, next:0 st:0 invalid dropping
 PTS 140462616565157, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 182445, size 1157, pts 0,
 dts 0, duration 0, keyframe 0
 DTS 140462616605136, next:0 st:0 invalid dropping
 PTS 140462616605136, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 183609, size 1116, pts 0,
 dts 0, duration 0, keyframe 0
 DTS 140462616645115, next:0 st:0 invalid dropping
 PTS 140462616645115, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 184732, size 1133, pts 0,
 dts 0, duration 0, keyframe 0
 DTS 140462616685094, next:0 st:0 invalid dropping
 PTS 140462616685094, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 185872, size 1160, pts 0,
 dts 0, duration 0, keyframe 0
 DTS 140462616725073, next:0 st:0 invalid dropping
 PTS 140462616725073, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 187039, size 1197, pts 0,
 dts 0, duration 0, keyframe 0
 DTS 140462616765052, next:0 st:0 invalid dropping
 PTS 140462616765052, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 188243, size 1180, pts 0,
 dts 0, duration 0, keyframe 0
 DTS 140462616805030, next:0 st:0 invalid dropping
 PTS 140462616805030, next:0 invalid dropping st:0
 [matroska @ 0x1990230] Writing block at offset 189430, size 1154, pts 0,
 dts 0, duration 0, keyframe 0
 [matroska @ 0x1990230] end duration = 0
 frame=  175 fps= 94 q=-1.0 Lsize=     186kB time=00:00:00.00 bitrate=N/A
 video:184kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB
 muxing overhead: 1.045869%
 Input file #0 (/dev/video0):
   Input stream #0:0 (video): 176 packets read (188674 bytes);
   Total: 176 packets (188674 bytes) demuxed
 Output file #0 (foo.mkv):
   Output stream #0:0 (video): 175 packets muxed (188647 bytes);
   Total: 175 packets (188647 bytes) muxed
 0 frames successfully decoded, 0 decoding errors
 [AVIOContext @ 0x1914540] Statistics: 52 seeks, 207 writeouts
 }}}

 {{{
 $ ls -l foo.mkv
 -rw-r--r-- 1 pi pi 190620 Jun 19 22:07 foo.mkv
 $ ./ffprobe -loglevel debug foo.mkv
 ffprobe version N-73009-gd1dce1c Copyright (c) 2007-2015 the FFmpeg
 developers
   built with gcc 4.6 (Debian 4.6.3-14+rpi1)
   configuration: --prefix=/usr/local --extra-cflags=-I/usr/local/includes
 --extra-ldflags=-L/usr/local/lib --disable-doc --enable-gpl --enable-
 libfreetype --enable-libmp3lame --enable-libx264 --enable-libv4l2
 --enable-fontconfig --enable-libfreetype --enable-nonfree --enable-libfaac
 --enable-libfdk-aac --disable-libvpx
   libavutil      54. 27.100 / 54. 27.100
   libavcodec     56. 41.100 / 56. 41.100
   libavformat    56. 37.100 / 56. 37.100
   libavdevice    56.  4.100 / 56.  4.100
   libavfilter     5. 17.100 /  5. 17.100
   libswscale      3.  1.101 /  3.  1.101
   libswresample   1.  2.100 /  1.  2.100
   libpostproc    53.  3.100 / 53.  3.100
 [matroska,webm @ 0x2afdf90] Format matroska,webm probed with size=2048 and
 score=100
 st:0 removing common factor 1000000 from timebase
 [matroska,webm @ 0x2afdf90] Before avformat_find_stream_info() pos: 518
 bytes read:32768 seeks:0
 [h264 @ 0x2aff4a0] non-existing PPS 0 referenced
     Last message repeated 1 times
 [h264 @ 0x2aff4a0] decode_slice_header error
 [h264 @ 0x2aff4a0] no frame!
 [h264 @ 0x2aff4a0] non-existing PPS 0 referenced
     Last message repeated 1 times
 [h264 @ 0x2aff4a0] decode_slice_header error
 [h264 @ 0x2aff4a0] no frame!
 [h264 @ 0x2aff4a0] non-existing PPS 0 referenced
     Last message repeated 1 times
 [h264 @ 0x2aff4a0] decode_slice_header error
 [h264 @ 0x2aff4a0] no frame!
 [h264 @ 0x2aff4a0] non-existing PPS 0 referenced
     Last message repeated 1 times
 [h264 @ 0x2aff4a0] decode_slice_header error
 [h264 @ 0x2aff4a0] no frame!
 [h264 @ 0x2aff4a0] non-existing PPS 0 referenced
     Last message repeated 1 times
 [h264 @ 0x2aff4a0] decode_slice_header error
 [h264 @ 0x2aff4a0] no frame!
 [h264 @ 0x2aff4a0] non-existing PPS 0 referenced
     Last message repeated 1 times
 [h264 @ 0x2aff4a0] decode_slice_header error
 [h264 @ 0x2aff4a0] no frame!
 [h264 @ 0x2aff4a0] non-existing PPS 0 referenced
     Last message repeated 1 times
 [h264 @ 0x2aff4a0] decode_slice_header error
 [h264 @ 0x2aff4a0] no frame!
 [h264 @ 0x2aff4a0] non-existing PPS 0 referenced
     Last message repeated 1 times
 [h264 @ 0x2aff4a0] decode_slice_header error
 [h264 @ 0x2aff4a0] no frame!
 [h264 @ 0x2aff4a0] non-existing PPS 0 referenced
     Last message repeated 1 times
 [h264 @ 0x2aff4a0] decode_slice_header error
 [h264 @ 0x2aff4a0] no frame!
 [h264 @ 0x2aff4a0] non-existing PPS 0 referenced
     Last message repeated 1 times
 [h264 @ 0x2aff4a0] decode_slice_header error
 [h264 @ 0x2aff4a0] no frame!
 [h264 @ 0x2aff4a0] missing picture in access unit with size 27
 [h264 @ 0x2aff4a0] no frame!
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 18 with
 DTS 0, packet 19 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 19 with
 DTS 0, packet 20 with DTS 0
 [h264 @ 0x2aff4a0] missing picture in access unit with size 27
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 20 with
 DTS 0, packet 21 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 21 with
 DTS 0, packet 22 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 22 with
 DTS 0, packet 23 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 23 with
 DTS 0, packet 24 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 24 with
 DTS 0, packet 25 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 25 with
 DTS 0, packet 26 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 26 with
 DTS 0, packet 27 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 27 with
 DTS 0, packet 28 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 28 with
 DTS 0, packet 29 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 29 with
 DTS 0, packet 30 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 30 with
 DTS 0, packet 31 with DTS 0
 [h264 @ 0x2aff4a0] missing picture in access unit with size 27
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 31 with
 DTS 0, packet 32 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 32 with
 DTS 0, packet 33 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 33 with
 DTS 0, packet 34 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 34 with
 DTS 0, packet 35 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 35 with
 DTS 0, packet 36 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 36 with
 DTS 0, packet 37 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 37 with
 DTS 0, packet 38 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 38 with
 DTS 0, packet 39 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 39 with
 DTS 0, packet 40 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 40 with
 DTS 0, packet 41 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 41 with
 DTS 0, packet 42 with DTS 0
 [h264 @ 0x2aff4a0] missing picture in access unit with size 27
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 42 with
 DTS 0, packet 43 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 43 with
 DTS 0, packet 44 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 44 with
 DTS 0, packet 45 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 45 with
 DTS 0, packet 46 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 46 with
 DTS 0, packet 47 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 47 with
 DTS 0, packet 48 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 48 with
 DTS 0, packet 49 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 49 with
 DTS 0, packet 50 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 50 with
 DTS 0, packet 51 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 51 with
 DTS 0, packet 52 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 52 with
 DTS 0, packet 53 with DTS 0
 [h264 @ 0x2aff4a0] missing picture in access unit with size 27
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 53 with
 DTS 0, packet 54 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 54 with
 DTS 0, packet 55 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 55 with
 DTS 0, packet 56 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 56 with
 DTS 0, packet 57 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 57 with
 DTS 0, packet 58 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 58 with
 DTS 0, packet 59 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 59 with
 DTS 0, packet 60 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 60 with
 DTS 0, packet 61 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 61 with
 DTS 0, packet 62 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 62 with
 DTS 0, packet 63 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 63 with
 DTS 0, packet 64 with DTS 0
 [h264 @ 0x2aff4a0] missing picture in access unit with size 27
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 64 with
 DTS 0, packet 65 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 65 with
 DTS 0, packet 66 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 66 with
 DTS 0, packet 67 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 67 with
 DTS 0, packet 68 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 68 with
 DTS 0, packet 69 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 69 with
 DTS 0, packet 70 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 70 with
 DTS 0, packet 71 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 71 with
 DTS 0, packet 72 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 72 with
 DTS 0, packet 73 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 73 with
 DTS 0, packet 74 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 74 with
 DTS 0, packet 75 with DTS 0
 [h264 @ 0x2aff4a0] missing picture in access unit with size 27
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 75 with
 DTS 0, packet 76 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 76 with
 DTS 0, packet 77 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 77 with
 DTS 0, packet 78 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 78 with
 DTS 0, packet 79 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 79 with
 DTS 0, packet 80 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 80 with
 DTS 0, packet 81 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 81 with
 DTS 0, packet 82 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 82 with
 DTS 0, packet 83 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 83 with
 DTS 0, packet 84 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 84 with
 DTS 0, packet 85 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 85 with
 DTS 0, packet 86 with DTS 0
 [h264 @ 0x2aff4a0] missing picture in access unit with size 27
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 86 with
 DTS 0, packet 87 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 87 with
 DTS 0, packet 88 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 88 with
 DTS 0, packet 89 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 89 with
 DTS 0, packet 90 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 90 with
 DTS 0, packet 91 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 91 with
 DTS 0, packet 92 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 92 with
 DTS 0, packet 93 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 93 with
 DTS 0, packet 94 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 94 with
 DTS 0, packet 95 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 95 with
 DTS 0, packet 96 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 96 with
 DTS 0, packet 97 with DTS 0
 [h264 @ 0x2aff4a0] missing picture in access unit with size 27
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 97 with
 DTS 0, packet 98 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 98 with
 DTS 0, packet 99 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 99 with
 DTS 0, packet 100 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 100
 with DTS 0, packet 101 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 101
 with DTS 0, packet 102 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 102
 with DTS 0, packet 103 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 103
 with DTS 0, packet 104 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 104
 with DTS 0, packet 105 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 105
 with DTS 0, packet 106 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 106
 with DTS 0, packet 107 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 107
 with DTS 0, packet 108 with DTS 0
 [h264 @ 0x2aff4a0] missing picture in access unit with size 27
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 108
 with DTS 0, packet 109 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 109
 with DTS 0, packet 110 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 110
 with DTS 0, packet 111 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 111
 with DTS 0, packet 112 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 112
 with DTS 0, packet 113 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 113
 with DTS 0, packet 114 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 114
 with DTS 0, packet 115 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 115
 with DTS 0, packet 116 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 116
 with DTS 0, packet 117 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 117
 with DTS 0, packet 118 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 118
 with DTS 0, packet 119 with DTS 0
 [h264 @ 0x2aff4a0] missing picture in access unit with size 27
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 119
 with DTS 0, packet 120 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 120
 with DTS 0, packet 121 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 121
 with DTS 0, packet 122 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 122
 with DTS 0, packet 123 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 123
 with DTS 0, packet 124 with DTS 0
 [matroska,webm @ 0x2afdf90] Non-increasing DTS in stream 0: packet 124
 with DTS 0, packet 125 with DTS 0
 [matroska,webm @ 0x2afdf90] max_analyze_duration 5000000 reached at
 5000000 microseconds
 [matroska,webm @ 0x2afdf90] After avformat_find_stream_info() pos: 130508
 bytes read:131072 seeks:0 frames:125
 Input #0, matroska,webm, from 'foo.mkv':
   Metadata:
     ENCODER         : Lavf56.37.100
   Duration: N/A, start: 0.000000, bitrate: N/A
     Stream #0:0, 125, 1/1000: Video: h264 (High), 1 reference frame,
 yuv420p(left), 1024x768, 1/2000, SAR 1:1 DAR 4:3, 25 fps, 25 tbr, 1k tbn,
 2k tbc (default)
 detected 4 logical cores
 [AVIOContext @ 0x2b06640] Statistics: 131072 bytes read, 0 seeks
 }}}


 I'm seeing this problem all models of Raspberry Pi with the Pi Camera
 Module.  On the software side, I'm running Raspbian (2015-05-05) which is
 based on Debian Wheezy (7.8).
 {{{
 $ uname -a
 Linux raspberrypi 3.18.11-v7+ #781 SMP PREEMPT Tue Apr 21 18:07:59 BST
 2015 armv7l GNU/Linux
 $ lsmod |egrep 'v4l2|video'
 bcm2835_v4l2           37225  0
 videobuf2_vmalloc       3009  1 bcm2835_v4l2
 videobuf2_memops        1552  1 videobuf2_vmalloc
 videobuf2_core         33578  1 bcm2835_v4l2
 v4l2_common             5077  2 bcm2835_v4l2,videobuf2_core
 videodev              122487  3 bcm2835_v4l2,v4l2_common,videobuf2_core
 media                  11577  1 videodev
 }}}


 Here's some output from v4l-ctl about support features available:
 {{{
 $ v4l2-ctl -V
 Format Video Capture:
         Width/Height  : 800/600
         Pixel Format  : 'H264'
         Field         : None
         Bytes per Line: 800
         Size Image    : 486400
         Colorspace    : Broadcast NTSC/PAL (SMPTE170M/ITU601)
         Custom Info   : feedcafe

 $ v4l2-ctl --list-formats-ext
 ioctl: VIDIOC_ENUM_FMT
         Index       : 0
         Type        : Video Capture
         Pixel Format: 'YU12'
         Name        : 4:2:0, packed YUV
                 Size: Stepwise 16x16 - 2592x1944 with step 2/2

         Index       : 1
         Type        : Video Capture
         Pixel Format: 'YUYV'
         Name        : 4:2:2, packed, YUYV
                 Size: Stepwise 16x16 - 2592x1944 with step 2/2

         Index       : 2
         Type        : Video Capture
         Pixel Format: 'RGB3'
         Name        : RGB24 (LE)
                 Size: Stepwise 16x16 - 2592x1944 with step 2/2

         Index       : 3
         Type        : Video Capture
         Pixel Format: 'JPEG' (compressed)
         Name        : JPEG
                 Size: Stepwise 16x16 - 2592x1944 with step 2/2

         Index       : 4
         Type        : Video Capture
         Pixel Format: 'H264' (compressed)
         Name        : H264
                 Size: Stepwise 16x16 - 2592x1944 with step 2/2

         Index       : 5
         Type        : Video Capture
         Pixel Format: 'MJPG' (compressed)
         Name        : MJPEG
                 Size: Stepwise 16x16 - 2592x1944 with step 2/2

         Index       : 6
         Type        : Video Capture
         Pixel Format: 'YVYU'
         Name        : 4:2:2, packed, YVYU
                 Size: Stepwise 16x16 - 2592x1944 with step 2/2

         Index       : 7
         Type        : Video Capture
         Pixel Format: 'VYUY'
         Name        : 4:2:2, packed, VYUY
                 Size: Stepwise 16x16 - 2592x1944 with step 2/2

         Index       : 8
         Type        : Video Capture
         Pixel Format: 'UYVY'
         Name        : 4:2:2, packed, UYVY
                 Size: Stepwise 16x16 - 2592x1944 with step 2/2

         Index       : 9
         Type        : Video Capture
         Pixel Format: 'NV12'
         Name        : 4:2:0, packed, NV12
                 Size: Stepwise 16x16 - 2592x1944 with step 2/2

         Index       : 10
         Type        : Video Capture
         Pixel Format: 'BGR3'
         Name        : RGB24 (BE)
                 Size: Stepwise 16x16 - 2592x1944 with step 2/2

         Index       : 11
         Type        : Video Capture
         Pixel Format: 'YV12'
         Name        : 4:2:0, packed YVU
                 Size: Stepwise 16x16 - 2592x1944 with step 2/2

         Index       : 12
         Type        : Video Capture
         Pixel Format: 'NV21'
         Name        : 4:2:0, packed, NV21
                 Size: Stepwise 16x16 - 2592x1944 with step 2/2

         Index       : 13
         Type        : Video Capture
         Pixel Format: 'BGR4'
         Name        : RGB32 (BE)
                 Size: Stepwise 16x16 - 2592x1944 with step 2/2

 $ v4l2-ctl  -L

 User Controls

                      brightness (int)    : min=0 max=100 step=1 default=50
 value=50 flags=slider
                        contrast (int)    : min=-100 max=100 step=1
 default=0 value=0 flags=slider
                      saturation (int)    : min=-100 max=100 step=1
 default=0 value=0 flags=slider
                     red_balance (int)    : min=1 max=7999 step=1
 default=1000 value=1000 flags=slider
                    blue_balance (int)    : min=1 max=7999 step=1
 default=1000 value=1000 flags=slider
                 horizontal_flip (bool)   : default=0 value=1
                   vertical_flip (bool)   : default=0 value=1
            power_line_frequency (menu)   : min=0 max=3 default=1 value=1
                                 0: Disabled
                                 1: 50 Hz
                                 2: 60 Hz
                                 3: Auto
                       sharpness (int)    : min=-100 max=100 step=1
 default=0 value=0 flags=slider
                   color_effects (menu)   : min=0 max=15 default=0 value=0
                                 0: None
                                 1: Black & White
                                 2: Sepia
                                 3: Negative
                                 4: Emboss
                                 5: Sketch
                                 6: Sky Blue
                                 7: Grass Green
                                 8: Skin Whiten
                                 9: Vivid
                                 10: Aqua
                                 11: Art Freeze
                                 12: Silhouette
                                 13: Solarization
                                 14: Antique
                                 15: Set Cb/Cr
                          rotate (int)    : min=0 max=360 step=90 default=0
 value=0
              color_effects_cbcr (int)    : min=0 max=65535 step=1
 default=32896 value=32896

 Codec Controls

              video_bitrate_mode (menu)   : min=0 max=1 default=0 value=0
 flags=update
                                 0: Variable Bitrate
                                 1: Constant Bitrate
                   video_bitrate (int)    : min=25000 max=25000000
 step=25000 default=10000000 value=6000000
          repeat_sequence_header (bool)   : default=0 value=1
             h264_i_frame_period (int)    : min=0 max=2147483647 step=1
 default=60 value=3
                      h264_level (menu)   : min=0 max=11 default=11
 value=11
                                 0: 1
                                 1: 1b
                                 2: 1.1
                                 3: 1.2
                                 4: 1.3
                                 5: 2
                                 6: 2.1
                                 7: 2.2
                                 8: 3
                                 9: 3.1
                                 10: 3.2
                                 11: 4
                    h264_profile (menu)   : min=0 max=4 default=4 value=4
                                 0: Baseline
                                 1: Constrained Baseline
                                 2: Main
                                 4: High

 Camera Controls

                   auto_exposure (menu)   : min=0 max=3 default=0 value=0
                                 0: Auto Mode
                                 1: Manual Mode
          exposure_time_absolute (int)    : min=1 max=10000 step=1
 default=1000 value=1000
      exposure_dynamic_framerate (bool)   : default=0 value=0
              auto_exposure_bias (intmenu): min=0 max=24 default=12
 value=12
                                 0: -4000 (0xfffffffffffff060)
                                 1: -3667 (0xfffffffffffff1ad)
                                 2: -3333 (0xfffffffffffff2fb)
                                 3: -3000 (0xfffffffffffff448)
                                 4: -2667 (0xfffffffffffff595)
                                 5: -2333 (0xfffffffffffff6e3)
                                 6: -2000 (0xfffffffffffff830)
                                 7: -1667 (0xfffffffffffff97d)
                                 8: -1333 (0xfffffffffffffacb)
                                 9: -1000 (0xfffffffffffffc18)
                                 10: -667 (0xfffffffffffffd65)
                                 11: -333 (0xfffffffffffffeb3)
                                 12: 0 (0x0)
                                 13: 333 (0x14d)
                                 14: 667 (0x29b)
                                 15: 1000 (0x3e8)
                                 16: 1333 (0x535)
                                 17: 1667 (0x683)
                                 18: 2000 (0x7d0)
                                 19: 2333 (0x91d)
                                 20: 2667 (0xa6b)
                                 21: 3000 (0xbb8)
                                 22: 3333 (0xd05)
                                 23: 3667 (0xe53)
                                 24: 4000 (0xfa0)
       white_balance_auto_preset (menu)   : min=0 max=9 default=1 value=1
                                 0: Manual
                                 1: Auto
                                 2: Incandescent
                                 3: Fluorescent
                                 4: Fluorescent H
                                 5: Horizon
                                 6: Daylight
                                 7: Flash
                                 8: Cloudy
                                 9: Shade
             image_stabilization (bool)   : default=0 value=0
                 iso_sensitivity (intmenu): min=0 max=4 default=0 value=0
                                 0: 0 (0x0)
                                 1: 100 (0x64)
                                 2: 200 (0xc8)
                                 3: 400 (0x190)
                                 4: 800 (0x320)
          exposure_metering_mode (menu)   : min=0 max=2 default=0 value=0
                                 0: Average
                                 1: Center Weighted
                                 2: Spot
                      scene_mode (menu)   : min=0 max=13 default=0 value=0
                                 0: None
                                 8: Night
                                 11: Sports

 JPEG Compression Controls

             compression_quality (int)    : min=1 max=100 step=1 default=30
 value=30
 }}}

--
Ticket URL: <https://trac.ffmpeg.org/ticket/2882#comment:26>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker


More information about the FFmpeg-trac mailing list