June 2017 - ffmpeg-user - lists.ffmpeg.org

Lost audio stream
by Tung Tran 15 Jun '17

15 Jun '17

Dear all I am seeking for helps with my issue of losing audio streams when receiving signal from Decklink SDI input, on rtmp outout, the audio stream was missing after couple seconds, but I check on SDI then audio was normal. Below is my command : ffmpeg -format_code Hi59 -video_input sdi -audio_input embedded -channels 2 -f decklink -i DeckLink SDI 4K -filter_complex [0:v]split=2[in1][in2];[in1]scale=1280:-1,format=yuv420p[ out1];[in2]thumbnail,scale=480:270,fps=1/2[out2] -map [out1] -map 0:a -framerate 30 -c:v libx264 -tune zerolatency -crf 20 -preset veryfast -profile:v high422 -aspect 16:9 -r 29.97 -g 60 -vb 2000k -c:a aac -ab 128k -ar 48000 -f flv rtmp://x.x.x.x:1935/live/hou-std1-ff -map [out2] -y -f image2 -update 1 /tmp/thumb/58e8032c9db24f9b35c4bbed.jpg Log: ffmpeg version N-85600-g9ef21a8 Copyright (c) 2000-2017 the FFmpeg developers built with gcc 4.8.5 (GCC) 20150623 (Red Hat 4.8.5-11) configuration: --prefix=/opt/ffmpeg --extra-cflags='-I$/opt/ffmpeg/include' --extra-ldflags='-L/opt/ffmpeg/lib -ldl' --bindir=/opt/ffmpeg/bin --pkg -config-flags=--static --enable-gpl --enable-nonfree --enable-libfdk_aac --enable-libfreetype --enable-libmp3lame --enable-libopus --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --enable-decklink --extra-cflags=-I/root/ffmpeg_source/Blackmagic_DeckLink_ SDK_10.8.6/Linux/includ e --extra-ldflags=-L/root/ffmpeg_source/Blackmagic_ DeckLink_SDK_10.8.6/Linux/include libavutil 55. 61.100 / 55. 61.100 libavcodec 57. 93.100 / 57. 93.100 libavformat 57. 72.101 / 57. 72.101 libavdevice 57. 7.100 / 57. 7.100 libavfilter 6. 85.100 / 6. 85.100 libswscale 4. 7.101 / 4. 7.101 libswresample 2. 8.100 / 2. 8.100 libpostproc 54. 6.100 / 54. 6.100 [decklink @ 0x3d28d80] Found Decklink mode 1920 x 1080 with rate 29.97(i) Guessed Channel Layout for Input Stream #0.0 : stereo Input #0, decklink, from 'DeckLink SDI 4K': Duration: N/A, start: 0.000000, bitrate: 995869 kb/s Stream #0:0: Audio: pcm_s16le, 48000 Hz, stereo, s16, 1536 kb/s Stream #0:1: Video: rawvideo (UYVY / 0x59565955), uyvy422, 1920x1080, 994333 kb/s, 29.97 tbr, 1000k tbn, 1000k tbc Stream mapping: Stream #0:1 (rawvideo) -> split (graph 0) format (graph 0) -> Stream #0:0 (libx264) Stream #0:0 -> #0:1 (pcm_s16le (native) -> aac (native)) fps (graph 0) -> Stream #1:0 (mjpeg) Press [q] to stop, [?] for help [swscaler @ 0x3e403a0] deprecated pixel format used, make sure you did set range correctly [libx264 @ 0x3d43fc0] using SAR=1/1 [libx264 @ 0x3d43fc0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 [libx264 @ 0x3d43fc0] profile High, level 3.1 [libx264 @ 0x3d43fc0] 264 - core 148 - H.264/MPEG-4 AVC codec - Copyleft 2003-2017 - http://www.videolan.org/x264.html - options: cabac=1 ref=1 deblo ck=1:0:0 analyse=0x3:0x113 me=hex subme=2 psy=1 psy_rd=1.00:0.00 mixed_ref=0 me_range=16 chroma_me=1 trellis=0 8x8dct=1 cqm=0 deadzone=21,11 fast_psk ip=1 chroma_qp_offset=0 threads=8 lookahead_threads=8 sliced_threads=1 slices=8 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bfra mes=0 weightp=1 keyint=60 keyint_min=6 scenecut=40 intra_refresh=0 rc=crf mbtree=0 crf=20.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1 .00 Output #1, image2, to '/tmp/thumb/58e8032c9db24f9b35c4bbed.jpg': Metadata: encoder : Lavf57.72.101 Stream #1:0: Video: mjpeg, yuvj444p(pc), 480x270, q=2-31, 200 kb/s, 0.50 fps, 0.50 tbn, 0.50 tbc Metadata: encoder : Lavc57.93.100 mjpeg Side data: cpb: bitrate max/min/avg: 0/0/200000 buffer size: 0 vbv_delay: -1 Output #0, flv, to 'rtmp://x.x.x.x:1935/live/hou-std1-ff': Metadata: encoder : Lavf57.72.101 Stream #0:0: Video: h264 (libx264) ([7][0][0][0] / 0x0007), yuv420p(progressive), 1280x720 [SAR 1:1 DAR 16:9], q=-1--1, 2000 kb/s, 29.97 fps, 1k tbn, 29.97 tbc Metadata: encoder : Lavc57.93.100 libx264 Side data: cpb: bitrate max/min/avg: 0/0/2000000 buffer size: 0 vbv_delay: -1 Stream #0:1: Audio: aac (LC) ([10][0][0][0] / 0x000A), 48000 Hz, stereo, fltp, 128 kb/s Metadata: encoder : Lavc57.93.100 aac frame= 3 fps=0.0 q=24.0 q=0.0 size= 119kB time=00:00:00.06 bitrate=14334.2kbits/s speed=0.125x frame= 12 fps= 11 q=23.0 q=0.0 size= 236kB time=00:00:00.36 bitrate=5261.7kbits/s speed=0.346x frame= 21 fps= 13 q=23.0 q=0.0 size= 359kB time=00:00:00.66 bitrate=4397.1kbits/s speed=0.423x frame= 30 fps= 14 q=23.0 q=0.0 size= 482kB time=00:00:00.96 bitrate=4071.3kbits/s speed=0.463x frame= 39 fps= 15 q=23.0 q=0.0 size= 606kB time=00:00:01.26 bitrate=3910.9kbits/s speed=0.486x frame= 48 fps= 15 q=23.0 q=0.0 size= 746kB time=00:00:01.56 bitrate=3893.9kbits/s speed=0.503x frame= 57 fps= 16 q=23.0 q=0.0 size= 873kB time=00:00:01.87 bitrate=3823.7kbits/s speed=0.515x frame= 65 fps= 16 q=23.0 q=0.0 size= 1035kB time=00:00:02.13 bitrate=3969.0kbits/s speed=0.515x frame= 74 fps= 16 q=23.0 q=0.0 size= 1164kB time=00:00:02.43 bitrate=3913.1kbits/s speed=0.523x frame= 83 fps= 16 q=23.0 q=0.0 size= 1297kB time=00:00:02.73 bitrate=3881.8kbits/s speed=0.529x frame= 92 fps= 16 q=23.0 q=0.0 size= 1423kB time=00:00:03.03 bitrate=3838.6kbits/s speed=0.534x [Parsed_thumbnail_3 @ 0x3d4fa20] frame id #64 (pts_time=2.135466) selected from a set of 100 images frame= 101 fps= 16 q=23.0 q=0.0 size= 1547kB time=00:00:03.33 bitrate=3795.7kbits/s speed=0.537x frame= 111 fps= 17 q=23.0 q=0.0 size= 1687kB time=00:00:03.67 bitrate=3765.5kbits/s speed=0.547x frame= 120 fps= 17 q=23.0 q=0.0 size= 1817kB time=00:00:03.97 bitrate=3747.9kbits/s speed=0.548x frame= 129 fps= 17 q=23.0 q=0.0 size= 2007kB time=00:00:04.27 bitrate=3848.1kbits/s speed=0.548x frame= 139 fps= 17 q=23.0 q=0.0 size= 2149kB time=00:00:04.60 bitrate=3821.4kbits/s speed=0.552x frame= 149 fps= 17 q=23.0 q=0.0 size= 2273kB time=00:00:04.93 bitrate=3770.0kbits/s speed=0.558x frame= 158 fps= 17 q=23.0 q=0.0 size= 2426kB time=00:00:05.24 bitrate=3792.0kbits/s speed=0.558x frame= 168 fps= 17 q=23.0 q=0.0 size= 2541kB time=00:00:05.57 bitrate=3734.5kbits/s speed=0.564x frame= 177 fps= 17 q=23.0 q=0.0 size= 2683kB time=00:00:05.87 bitrate=3741.5kbits/s speed=0.563x frame= 186 fps= 17 q=23.0 q=0.0 size= 2872kB time=00:00:06.17 bitrate=3810.5kbits/s speed=0.565x frame= 196 fps= 17 q=23.0 q=0.0 size= 3011kB time=00:00:06.50 bitrate=3789.9kbits/s speed=0.567x [Parsed_thumbnail_3 @ 0x3d4fa20] frame id #56 (pts_time=5.205200) selected from a set of 100 images frame= 205 fps= 17 q=23.0 q=1.6 size= 3133kB time=00:00:06.80 bitrate=3770.0kbits/s dup=1 drop=0 speed=0.568x frame= 215 fps= 17 q=23.0 q=1.6 size= 3273kB time=00:00:07.14 bitrate=3754.2kbits/s dup=1 drop=0 speed=0.57x frame= 225 fps= 17 q=23.0 q=1.6 size= 3414kB time=00:00:07.47 bitrate=3741.0kbits/s dup=1 drop=0 speed=0.572x frame= 235 fps= 17 q=23.0 q=1.6 size= 3554kB time=00:00:07.80 bitrate=3728.2kbits/s dup=1 drop=0 speed=0.575x frame= 245 fps= 17 q=23.0 q=1.6 size= 3762kB time=00:00:08.14 bitrate=3785.0kbits/s dup=1 drop=0 speed=0.576x frame= 255 fps= 17 q=23.0 q=1.6 size= 3900kB time=00:00:08.47 bitrate=3769.4kbits/s dup=1 drop=0 speed=0.578x frame= 265 fps= 17 q=23.0 q=1.6 size= 4037kB time=00:00:08.81 bitrate=3753.4kbits/s dup=1 drop=0 speed=0.58x frame= 275 fps= 18 q=23.0 q=1.6 size= 4193kB time=00:00:09.14 bitrate=3757.1kbits/s dup=1 drop=0 speed=0.582x frame= 285 fps= 18 q=23.0 q=1.6 size= 4316kB time=00:00:09.47 bitrate=3730.9kbits/s dup=1 drop=0 speed=0.584x frame= 295 fps= 18 q=23.0 q=1.6 size= 4453kB time=00:00:09.81 bitrate=3718.5kbits/s dup=1 drop=0 speed=0.585x [Parsed_thumbnail_3 @ 0x3d4fa20] frame id #52 (pts_time=8.408400) selected from a set of 100 images frame= 305 fps= 18 q=23.0 q=1.6 size= 4649kB time=00:00:10.14 bitrate=3754.7kbits/s dup=1 drop=0 speed=0.587x frame= 314 fps= 18 q=23.0 q=1.6 size= 4801kB time=00:00:10.44 bitrate=3765.4kbits/s dup=1 drop=0 speed=0.587x frame= 324 fps= 18 q=23.0 q=1.6 size= 4930kB time=00:00:10.77 bitrate=3746.9kbits/s dup=1 drop=0 speed=0.588x frame= 334 fps= 18 q=23.0 q=1.6 size= 5071kB time=00:00:11.11 bitrate=3738.3kbits/s dup=1 drop=0 speed=0.59x frame= 344 fps= 18 q=23.0 q=1.6 size= 5226kB time=00:00:11.44 bitrate=3740.3kbits/s dup=1 drop=0 speed=0.591x [decklink @ 0x3d28d80] Decklink input buffer overrun! Last message repeated 8 times frame= 354 fps= 18 q=23.0 q=1.6 size= 5356kB time=00:00:11.77 bitrate=3724.8kbits/s dup=1 drop=0 speed=0.592x [decklink @ 0x3d28d80] Decklink input buffer overrun! Last message repeated 19 times frame= 364 fps= 18 q=23.0 q=1.6 size= 5566kB time=00:00:12.11 bitrate=3764.2kbits/s dup=1 drop=0 speed=0.594x [decklink @ 0x3d28d80] Decklink input buffer overrun! Last message repeated 19 times frame= 374 fps= 18 q=23.0 q=1.6 size= 5707kB time=00:00:12.44 bitrate=3755.9kbits/s dup=1 drop=0 speed=0.596x [decklink @ 0x3d28d80] Decklink input buffer overrun! Last message repeated 19 times frame= 384 fps= 18 q=23.0 q=1.6 size= 5851kB time=00:00:12.78 bitrate=3750.2kbits/s dup=1 drop=0 speed=0.597x [decklink @ 0x3d28d80] Decklink input buffer overrun! Last message repeated 4 times [Parsed_thumbnail_3 @ 0x3d4fa20] frame id #45 (pts_time=14.848166) selected from a set of 100 images [decklink @ 0x3d28d80] Decklink input buffer overrun! Last message repeated 16 times frame= 507 fps= 18 q=23.0 q=1.6 size= 7812kB time=00:00:16.88 bitrate=3789.9kbits/s dup=1 drop=0 speed=0.611x [decklink @ 0x3d28d80] Decklink input buffer overrun! Last message repeated 19 times frame= 517 fps= 18 q=23.0 q=1.6 size= 7960kB time=00:00:17.21 bitrate=3787.1kbits/s dup=1 drop=0 speed=0.612x [decklink @ 0x3d28d80] Decklink input buffer overrun! Last message repeated 19 times frame= 527 fps= 18 q=23.0 q=1.6 size= 8105kB time=00:00:17.55 bitrate=3782.9kbits/s dup=1 drop=0 speed=0.613x [decklink @ 0x3d28d80] Decklink input buffer overrun! Last message repeated 19 times frame= 537 fps= 18 q=23.0 q=1.6 size= 8256kB time=00:00:17.88 bitrate=3781.3kbits/s dup=1 drop=0 speed=0.614x [decklink @ 0x3d28d80] Decklink input buffer overrun! Last message repeated 19 times frame= 547 fps= 18 q=23.0 q=1.6 size= 8469kB time=00:00:18.21 bitrate=3808.0kbits/s dup=1 drop=0 speed=0.615x [decklink @ 0x3d28d80] Decklink input buffer overrun! Last message repeated 21 times frame= 557 fps= 18 q=23.0 q=1.6 size= 8617kB time=00:00:18.55 bitrate=3805.0kbits/s dup=1 drop=0 speed=0.615x [decklink @ 0x3d28d80] Decklink input buffer overrun! Last message repeated 19 times frame= 567 fps= 18 q=23.0 q=1.6 size= 8768kB time=00:00:18.88 bitrate=3802.9kbits/s dup=1 drop=0 speed=0.616x [decklink @ 0x3d28d80] Decklink input buffer overrun! Last message repeated 19 times ... --- Best regards, *Tung Tran*

2 3

need help in reducing the stream start latency in a network enviroment
by Ratheendran R 14 Jun '17

14 Jun '17

Hi All, I am wrote an app which reads elementary streams of encoded audio/video and mux them into mpegts stream subsequently write to unix domain socket as client, an Unix socket server app using libwebsocket takes this streams and send it to websocket server. Now this works as expected, currently mpegts stream start latency is ~ 10 sec. Also this is an embedded system use case and encoding happens through hardware accelarators on soc fixed properties.I would like to know if we can further reduce the size of library and bypass redundant task like probe and parsing metadata of mpegts streams. options used for configuring ffmpeg --enable-decoder=h264 --enable-decoder=aac --enable-bsf=h264_mp4toannexb ---enable-muxer=mpegts --enable-protocol=unix can any one in the forum share their experience on fixing the high latency on mpegts streaming. Thanks, Ratheendran

2 5

Changing video frame rate and keeping duration intact
by Idan Yael 14 Jun '17

14 Jun '17

I am trying to segment a video file, transcode each of the segments and then stitch them all back to one. The process is working but I have noticed that the final file has a different duration than the original one. Probably because I am transcoding to a fixed frame rate which is different from the source frame rate. To segment the video I use: ffmpeg -y -i video_only.mp4 -c copy -flags -global_header -segment_time 50 -break_non_keyframes 0 -reset_timestamps 0 \ -segment_list file_segs.list -segment_format mp4 -segment_list_type ffconcat -write_empty_segments 0 \ -f segment file_seg-%d.mp4 Then, each segment is transcoded with this command: ffmpeg -y -i $f -vcodec libx264 -vsync 1 -crf 18 -vf "fps=30" -pix_fmt yuv420p -preset:v fast -profile:v main -level:v 4.1 transcoded/$f And finally, concat: ffmpeg -y -f concat -i file_segs.list -c:v copy -c:a copy -movflags +faststart video_final.mp4 I've tried using "-r 30" instead on the filter (-vf), the same result. As this is a part of a transcoding system I prefer not to check for the input file fps before transcoding as it can be anything - variable fps too (which is not so easy to detect) Is there any way I can keep the duration intact while changing the frame rate in this type of transcoding flow? Thanks, Idan.

1 0

Compiling FFMPEG with ffplay support
by Stas Oskin 13 Jun '17

13 Jun '17

Hi. Did the compilation parameters changed in recent FFMPEG version? Configuring the FFMPEG like this: ./configure --prefix=/usr --enable-pthreads Does not produce ffplay anymore. I tried to add --enable-ffplay, without any result. Any idea what I'm missing? Thanks.

6 9

multiple instances of segmenter
by Joe Konecny 13 Jun '17

13 Jun '17

I'm calling ffmpeg from crontab and using the segmenter. Two instances of ffmpeg are running at once. One of the instances uses the segmenter properly the other creates one large file. Is there any way I can make the segmenter work for each instance? ffmpeg version 3.2.4-1build2 Copyright (c) 2000-2017 the FFmpeg developers built with gcc 6.3.0 (Ubuntu 6.3.0-8ubuntu1) 20170221 configuration: --prefix=/usr --extra-version=1build2 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --enable-gpl --disable-stripping --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libebur128 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmp3lame --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264 --enable-shared 0 6 * * * root timeout 5h ffmpeg -i "http://192.168.1.230/videostream.cgi?user=admin&pwd=blah&resolution=32&rate…" -map 0 -c copy -f segment -strftime 1 -segment_time 1200 -reset_timestamps 1 -segment_format mp4 "/opt/dev/00233s/734/hhsd/capture-\%Y-\%m-\%d-\%H-\%M-\%S.mp4" 0 6 * * * root timeout 5h ffmpeg -i "http://192.168.1.8/videostream.cgi?user=admin&pwd=blah&resolution=32&rate=0" -map 0 -c copy -f segment -strftime 1 -segment_time 1200 -reset_timestamps 1 -segment_format mp4 "/opt/dev/00233s/734/hhsd/lcapture-\%Y-\%m-\%d-\%H-\%M-\%S.mp4"

2 3

FPS drop when transcode 3 Full HD channel to SD
by Hendrik Karsimin 13 Jun '17

13 Jun '17

Hi, I've been trying to transcode the Full HD Channel (1920x1080) to SD (720x576). When I transcode 1 channel, the resulting video is no problem. So are when transcode 2 channel. But when the 3rd channel I tried to transcode start. the FPS start to drop on all the channel I transcoding. I'm not sure if it's a computer hardware limitation or the software limitation. But I have tried to change some parameter of ffmpeg, and settle on the last ffmpeg configuration I use now. Attached is the information I collect on the PC I use to transcode. The Ubuntu Version I use is Ubuntu 14.04.5 #lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 14.04.5 LTS Release: 14.04 Codename: trusty #uname -a Linux Compaq 3.13.0-119-generic #166-Ubuntu SMP Wed May 3 12:18:55 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux Need advice to resolve this problem. *Thanks & regards,* Hendrik

3 2

Mozaic: Choose audio source
by Grégory S 13 Jun '17

13 Jun '17

Hi, i develop a C++ application which generate a FFMpeg command to create a mozaic of 3 videos. The duration of each source videos can be different. The exported video duration is equal to the longest source video (i have acces to the information and i generate the command according to this information). This is an example of my actual generated command: "ffmpeg.exe -i C:/temp/lego.mp4 -i C:/temp/blender.mp4 -i C:/temp/lego.mp4 -filter_complex "nullsrc=size=1920x1080 [base]; [0:v] setpts=PTS-STARTPTS,scale=960x540 [upperleft]; [1:v] setpts=PTS-STARTPTS, scale=960x540 [upperright]; [2:v] setpts=PTS-STARTPTS, scale=960x540 [lowerright]; [base][upperleft] overlay=eof_action=repeat [tmp1]; [tmp1][upperright] overlay=shortest=1:x=960 [tmp2]; [tmp2][lowerright] overlay=eof_action=repeat:x=960:y=540" -sn -c:v libx264 -y C:\temp\output.mkv" Now i want to be able to select from which video source the sound will be exported. If the duration of the sound is shorter than the duration of the mozaic (if it do not comes from the longest video), i want to have silence until the end of the video. How can i do that ? Thanks

2 2

where to download av sync test clips
by qw 13 Jun '17

13 Jun '17

Hi, I want to av sync of my application based on ffmpeg. Where to get av sync test clips, include all kinds of frame rate, such as 24, 23.98, 25, 29.97, 30, 50, 59.94, 60? Thanks! Regards Andrew

1 0

Error configuring filters. (AudioBars)
by Manmathan 13 Jun '17

13 Jun '17

Trying to figure out how to display audiobar. ffplay -f lavfi "amovie=p.mp4, asplit [a][out1]; [a] showvolume=f=255:b=4:w=720:h=68 [out0]" *Error No Such filter : "showvolume". * *Invalid arguments.* Downloaded the latest from ffmpeg website, but the list as per "ffmpeg -filters" doesnot show "showvolume" filter. How can I add this filter. -- View this message in context: http://www.ffmpeg-archive.org/Error-configuring-filters-AudioBars-tp4680275… Sent from the FFmpeg-users mailing list archive at Nabble.com.

3 6

libavcodec compilation (h264 disabled & hw-accels enabled)
by Rémi Latapy 12 Jun '17

12 Jun '17

Hi, I'm trying to build ffmpeg with hardware decoding enabled but without any decoders, like h264 decoder.. Is it possible ? >From what I understanding, enabling hw accels makes h264 decoder enabled too. This is for a legal issue. Thanks

3 2