[FFmpeg-trac] #2607(undetermined:new): Ffmpeg duplicates and drops frames when given a .ts stream.
FFmpeg
trac at avcodec.org
Tue May 28 13:04:37 CEST 2013
#2607: Ffmpeg duplicates and drops frames when given a .ts stream.
-------------------------------------+-------------------------------------
Reporter: Nofew | Owner:
Type: defect | Status: new
Priority: normal | Component:
Version: git-master | undetermined
Keywords: | Resolution:
Blocking: | Blocked By:
Analyzed by developer: 0 | Reproduced by developer: 0
-------------------------------------+-------------------------------------
Comment (by ubitux):
The codec doesn't seem to be related, but the behaviour within container
looks slightly different.
AVI, dup=0 drop=806:
{{{
☭ ./ffmpeg -i
~/Ffmpeg_duplicates_and_drops_frames_when_given_a_ts_stream.ts -c:v mpeg4
-an -y outbar.avi
ffmpeg version N-53573-g3ed3aaa Copyright (c) 2000-2013 the FFmpeg
developers
built on May 28 2013 12:46:13 with gcc 4.8.0 (GCC) 20130502 (prerelease)
configuration: --enable-gpl --enable-libx264 --enable-libmp3lame
--enable-x11grab --enable-libvorbis --enable-libvpx --enable-libopenjpeg
libavutil 52. 34.100 / 52. 34.100
libavcodec 55. 12.100 / 55. 12.100
libavformat 55. 7.100 / 55. 7.100
libavdevice 55. 1.101 / 55. 1.101
libavfilter 3. 72.100 / 3. 72.100
libswscale 2. 3.100 / 2. 3.100
libswresample 0. 17.102 / 0. 17.102
libpostproc 52. 3.100 / 52. 3.100
Input #0, mpegts, from
'/home/ubitux/Ffmpeg_duplicates_and_drops_frames_when_given_a_ts_stream.ts':
Duration: 00:00:20.78, start: 2000.488000, bitrate: 25666 kb/s
Program 2
Stream #0:0[0x64]: Video: h264 (High) ([27][0][0][0] / 0x001B),
yuv420p, 1280x720 [SAR 1:1 DAR 16:9], 59.94 fps, 59.94 tbr, 90k tbn,
119.88 tbc
Stream #0:1[0x65](USA): Audio: aac ([15][0][0][0] / 0x000F), 48000 Hz,
stereo, fltp, 241 kb/s
Output #0, avi, to 'outbar.avi':
Metadata:
ISFT : Lavf55.7.100
Stream #0:0: Video: mpeg4 (FMP4 / 0x34504D46), yuv420p, 1280x720 [SAR
1:1 DAR 16:9], q=2-31, 200 kb/s, 59.94 tbn, 59.94 tbc
Stream mapping:
Stream #0:0 -> #0:0 (h264 -> mpeg4)
Press [q] to stop, [?] for help
error while decoding MB 73 16, bytestream (-80)=00:00:19.83 bitrate=
914.3kbits/s dup=0 drop=787
[h264 @ 0x32540c0] concealing 2296 DC, 2296 AC, 2296 MV errors in I frame
frame= 410 fps= 39 q=24.8 Lsize= 2300kB time=00:00:20.38 bitrate=
924.1kbits/s dup=0 drop=806
video:2265kB audio:0kB subtitle:0 global headers:0kB muxing overhead
1.522031%
}}}
MKV, same:
{{{
☭ ./ffmpeg -i
~/Ffmpeg_duplicates_and_drops_frames_when_given_a_ts_stream.ts -c:v mpeg4
-an -y outbar.mkv
ffmpeg version N-53573-g3ed3aaa Copyright (c) 2000-2013 the FFmpeg
developers
built on May 28 2013 12:46:13 with gcc 4.8.0 (GCC) 20130502 (prerelease)
configuration: --enable-gpl --enable-libx264 --enable-libmp3lame
--enable-x11grab --enable-libvorbis --enable-libvpx --enable-libopenjpeg
libavutil 52. 34.100 / 52. 34.100
libavcodec 55. 12.100 / 55. 12.100
libavformat 55. 7.100 / 55. 7.100
libavdevice 55. 1.101 / 55. 1.101
libavfilter 3. 72.100 / 3. 72.100
libswscale 2. 3.100 / 2. 3.100
libswresample 0. 17.102 / 0. 17.102
libpostproc 52. 3.100 / 52. 3.100
Input #0, mpegts, from
'/home/ubitux/Ffmpeg_duplicates_and_drops_frames_when_given_a_ts_stream.ts':
Duration: 00:00:20.78, start: 2000.488000, bitrate: 25666 kb/s
Program 2
Stream #0:0[0x64]: Video: h264 (High) ([27][0][0][0] / 0x001B),
yuv420p, 1280x720 [SAR 1:1 DAR 16:9], 59.94 fps, 59.94 tbr, 90k tbn,
119.88 tbc
Stream #0:1[0x65](USA): Audio: aac ([15][0][0][0] / 0x000F), 48000 Hz,
stereo, fltp, 241 kb/s
Output #0, matroska, to 'outbar.mkv':
Metadata:
encoder : Lavf55.7.100
Stream #0:0: Video: mpeg4 (FMP4 / 0x34504D46), yuv420p, 1280x720 [SAR
1:1 DAR 16:9], q=2-31, 200 kb/s, 1k tbn, 59.94 tbc
Stream mapping:
Stream #0:0 -> #0:0 (h264 -> mpeg4)
Press [q] to stop, [?] for help
error while decoding MB 73 16, bytestream (-80)=00:00:20.03 bitrate=
908.8kbits/s dup=0 drop=795
[h264 @ 0x2a410c0] concealing 2296 DC, 2296 AC, 2296 MV errors in I frame
frame= 410 fps= 39 q=24.8 Lsize= 2268kB time=00:00:20.38 bitrate=
911.4kbits/s dup=0 drop=806
video:2264kB audio:0kB subtitle:0 global headers:0kB muxing overhead
0.198051%
}}}
MP4, dup=409 drop=403:
{{{
☭ ./ffmpeg -i
~/Ffmpeg_duplicates_and_drops_frames_when_given_a_ts_stream.ts -c:v mpeg4
-an -y outbar.mp4
ffmpeg version N-53573-g3ed3aaa Copyright (c) 2000-2013 the FFmpeg
developers
built on May 28 2013 12:46:13 with gcc 4.8.0 (GCC) 20130502 (prerelease)
configuration: --enable-gpl --enable-libx264 --enable-libmp3lame
--enable-x11grab --enable-libvorbis --enable-libvpx --enable-libopenjpeg
libavutil 52. 34.100 / 52. 34.100
libavcodec 55. 12.100 / 55. 12.100
libavformat 55. 7.100 / 55. 7.100
libavdevice 55. 1.101 / 55. 1.101
libavfilter 3. 72.100 / 3. 72.100
libswscale 2. 3.100 / 2. 3.100
libswresample 0. 17.102 / 0. 17.102
libpostproc 52. 3.100 / 52. 3.100
Input #0, mpegts, from
'/home/ubitux/Ffmpeg_duplicates_and_drops_frames_when_given_a_ts_stream.ts':
Duration: 00:00:20.78, start: 2000.488000, bitrate: 25666 kb/s
Program 2
Stream #0:0[0x64]: Video: h264 (High) ([27][0][0][0] / 0x001B),
yuv420p, 1280x720 [SAR 1:1 DAR 16:9], 59.94 fps, 59.94 tbr, 90k tbn,
119.88 tbc
Stream #0:1[0x65](USA): Audio: aac ([15][0][0][0] / 0x000F), 48000 Hz,
stereo, fltp, 241 kb/s
Output #0, mp4, to 'outbar.mp4':
Metadata:
encoder : Lavf55.7.100
Stream #0:0: Video: mpeg4 ( [0][0][0] / 0x0020), yuv420p, 1280x720
[SAR 1:1 DAR 16:9], q=2-31, 200 kb/s, 60k tbn, 59.94 tbc
Stream mapping:
Stream #0:0 -> #0:0 (h264 -> mpeg4)
Press [q] to stop, [?] for help
error while decoding MB 73 16, bytestream (-80)=00:00:19.68
bitrate=1801.3kbits/s dup=394 drop=390
[h264 @ 0x3071480] concealing 2296 DC, 2296 AC, 2296 MV errors in I frame
frame= 1222 fps= 86 q=31.0 Lsize= 4517kB time=00:00:20.38
bitrate=1814.9kbits/s dup=409 drop=403
video:4511kB audio:0kB subtitle:0 global headers:0kB muxing overhead
0.133645%
}}}
@Nofew: you're ticket is mentioning that you tried extracting the frames
into images. If you do so to compare every frame, make sure you use the
{{{-vsync vfr}}} switch (See #1644 for more info).
--
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/2607#comment:4>
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