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• Using ffmpeg for streaming video composition from Python : why the sound is cut only when streaming into a mp4 file ?

  4 décembre 2017, par redantlabs

  I am using ffmpeg within Python for automatizing some video compositions. To do so, I am using the subprocess module of Python and run a ffmpeg command with a pipe input. This allows me to stream frame by frame the video composition from my array of raw images (numpy matrices) into ffmpeg. In the following example, I reduced the video composition to a simple video of a duration of 12 seconds. The produced ffmpeg command is :

  ffmpeg -i stream_audio.mp3 -re -f rawvideo -vcodec rawvideo -s 1280x720 -pix_fmt rgb24 -r 25 -i - -map 0:a -map 1:v -y -strict -2 -f mp4 -pix_fmt yuv420p out.mp4

  The file stream_audio.mp3 is a well formed mp3 file corresponding to the audio output of the output mp4 file. However, the sound in the output file out.mp4 is cut 3 seconds before the end.

  If I am trying to output any other format (for example avi), I do not observe this problem. The following command produces a well formed avi file.

   ffmpeg -i ./stream_audio.mp3 -re -f rawvideo -vcodec rawvideo -s 1280x720 -pix_fmt rgb24 -r 25 -i - -map 0:a -map 1:v -y -b 4096k -f avi -pix_fmt yuv420p out.avi

  I tried to reproduce the bug with the most simple ffmpeg command without passing by Python, but did not succeed.The closest I have done is the following :

  Building a raw video file with the correct specifications

  ffmpeg -i samplevideo.mp4 -f rawvideo -vcodec rawvideo -acodec none -s 1280x720 -pix_fmt rgb24 -r 25 samplevideo.raw

  Streaming the raw video file into the ffmpeg command

  cat samplevideo.raw | ffmpeg -i /tmp/stream_audio.mp3 -re -f rawvideo -vcodec rawvideo -s 1280x720 -pix_fmt rgb24 -r 25 -i - -map 0:a -map 1:v 
  
  -y -strict -2 -f mp4 -pix_fmt yuv420p  -ss 00:00:00 -t 00:00:12 out.mp4

  Here is the version of ffmpeg I am using :

  ffmpeg version 3.1.9 Copyright (c) 2000-2017 the FFmpeg developers
  
    built with gcc 6.3.1 (GCC) 20161221 (Red Hat 6.3.1-1)
  
    configuration: --prefix=/usr --bindir=/usr/bin --datadir=/usr/share/ffmpeg --incdir=/usr/include/ffmpeg --libdir=/usr/lib64 --mandir=/usr/share/man --arch=x86_64 --optflags='-O2 -g -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector-strong --param=ssp-buffer-size=4 -grecord-gcc-switches -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -m64 -mtune=generic' --extra-ldflags='-Wl,-z,relro -specs=/usr/lib/rpm/redhat/redhat-hardened-ld' --enable-bzlib --disable-crystalhd --enable-fontconfig --enable-frei0r --enable-gcrypt --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libcdio --enable-indev=jack --enable-libfreetype --enable-libfribidi --enable-libgsm --enable-libmp3lame --enable-nvenc --extra-cflags=-I/usr/include/nvenc --enable-openal --enable-opencl --enable-opengl --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libvorbis --enable-libv4l2 --enable-libvpx --enable-libx264 --enable-libx265 --enable-libxvid --enable-x11grab --enable-avfilter --enable-avresample --enable-postproc --enable-pthreads --disable-static --enable-shared --enable-gpl --disable-debug --disable-stripping --shlibdir=/usr/lib64 --enable-libmfx --enable-runtime-cpudetect
  
    libavutil      55. 28.100 / 55. 28.100
  
    libavcodec     57. 48.101 / 57. 48.101
  
    libavformat    57. 41.100 / 57. 41.100
  
    libavdevice    57.  0.101 / 57.  0.101
  
    libavfilter     6. 47.100 /  6. 47.100
  
    libavresample   3.  0.  0 /  3.  0.  0
  
    libswscale      4.  1.100 /  4.  1.100
  
    libswresample   2.  1.100 /  2.  1.100
  
    libpostproc    54.  0.100 / 54.  0.100
  
  Hyper fast Audio and Video encoder

  The file samplevideo.mp4 can be found here : sample videos, the stream_audio.mp3 file is a simple extraction of the audio track of the samplevideo.mp4 file :

  ffmpeg -i samplevideo.mp4 stream_audio.mp3

  Thanks for your help.

  p.s : Here are the different logs of the ffmpeg commands :

  Command generated by my Python script with mp4 :

  Input #0, mp3, from './stream_audio.mp3':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf57.41.100
  
    Duration: 00:00:29.59, start: 0.023021, bitrate: 128 kb/s
  
      Stream #0:0: Audio: mp3, 48000 Hz, stereo, s16p, 128 kb/s
  
      Metadata:
  
        encoder         : Lavc57.48
  
  Input #1, rawvideo, from 'pipe:':
  
    Duration: N/A, start: 0.000000, bitrate: 552960 kb/s
  
      Stream #1:0: Video: rawvideo (RGB[24] / 0x18424752), rgb24, 1280x720, 552960 kb/s, 25 tbr, 25 tbn, 25 tbc
  
  [libx264 @ 0xf5cb748ac0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 AVX2 LZCNT BMI2
  
  [libx264 @ 0xf5cb748ac0] profile High, level 3.1
  
  [libx264 @ 0xf5cb748ac0] 264 - core 148 r2708 86b7198 - H.264/MPEG-4 AVC codec - Copyleft 2003-2016 - 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
  
  [mp4 @ 0xf5cb7462a0] Using AVStream.codec to pass codec parameters to muxers is deprecated, use AVStream.codecpar instead.
  
      Last message repeated 1 times
  
  Output #0, mp4, to 'out.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf57.41.100
  
      Stream #0:0: Audio: aac (LC) ([64][0][0][0] / 0x0040), 48000 Hz, stereo, fltp, 128 kb/s
  
      Metadata:
  
        encoder         : Lavc57.48.101 aac
  
      Stream #0:1: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 1280x720, q=-1--1, 25 fps, 12800 tbn, 25 tbc
  
      Metadata:
  
        encoder         : Lavc57.48.101 libx264
  
      Side data:
  
        cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (mp3 (native) -> aac (native))
  
    Stream #1:0 -> #0:1 (rawvideo (native) -> h264 (libx264))
  
  [rawvideo @ 0xf5cb722860] Thread message queue blocking; consider raising the thread_queue_size option (current value: 8)
  
  frame=   14 fps=0.0 q=0.0 size=       0kB time=00:00:00.00 bitrate=N/A speed=   0x    
  
  frame=   27 fps= 27 q=0.0 size=       0kB time=00:00:00.00 bitrate=N/A speed=   0x    
  
  frame=   40 fps= 26 q=0.0 size=       0kB time=00:00:00.00 bitrate=N/A speed=   0x    
  
  frame=   52 fps= 26 q=28.0 size=     113kB time=00:00:00.00 bitrate=N/A speed=   0x    
  
  frame=   65 fps= 26 q=28.0 size=     188kB time=00:00:00.49 bitrate=3145.8kbits/s speed=0.194x    
  
  frame=   77 fps= 25 q=28.0 size=     320kB time=00:00:01.00 bitrate=2615.3kbits/s speed=0.331x    
  
  frame=   90 fps= 25 q=28.0 size=     450kB time=00:00:01.51 bitrate=2431.3kbits/s speed=0.428x    
  
  frame=  103 fps= 25 q=28.0 size=     592kB time=00:00:02.00 bitrate=2418.9kbits/s speed=0.496x    
  
  frame=  116 fps= 25 q=28.0 size=     731kB time=00:00:02.52 bitrate=2376.1kbits/s speed=0.554x    
  
  frame=  128 fps= 25 q=28.0 size=     849kB time=00:00:03.02 bitrate=2295.6kbits/s speed=0.599x    
  
  frame=  141 fps= 25 q=28.0 size=     931kB time=00:00:03.54 bitrate=2153.0kbits/s speed=0.637x    
  
  frame=  153 fps= 25 q=28.0 size=     983kB time=00:00:04.03 bitrate=1996.7kbits/s speed=0.665x    
  
  frame=  166 fps= 25 q=28.0 size=    1067kB time=00:00:04.56 bitrate=1914.5kbits/s speed=0.695x    
  
  frame=  179 fps= 25 q=28.0 size=    1123kB time=00:00:05.04 bitrate=1824.8kbits/s speed=0.712x    
  
  frame=  191 fps= 25 q=28.0 size=    1213kB time=00:00:05.54 bitrate=1791.0kbits/s speed=0.732x    
  
  frame=  204 fps= 25 q=28.0 size=    1271kB time=00:00:06.05 bitrate=1718.5kbits/s speed=0.749x    
  
  frame=  217 fps= 25 q=28.0 size=    1346kB time=00:00:06.57 bitrate=1678.1kbits/s speed=0.764x    
  
  frame=  230 fps= 25 q=28.0 size=    1452kB time=00:00:07.08 bitrate=1678.9kbits/s speed=0.778x    
  
  frame=  242 fps= 25 q=28.0 size=    1567kB time=00:00:07.59 bitrate=1690.3kbits/s speed=0.79x    
  
  frame=  255 fps= 25 q=28.0 size=    1660kB time=00:00:08.08 bitrate=1682.4kbits/s speed=0.799x    
  
  frame=  267 fps= 25 q=28.0 size=    1739kB time=00:00:08.59 bitrate=1657.1kbits/s speed=0.81x    
  
  frame=  280 fps= 25 q=28.0 size=    1751kB time=00:00:09.08 bitrate=1578.1kbits/s speed=0.817x    
  
  frame=  291 fps= 24 q=-1.0 Lsize=    1864kB time=00:00:11.52 bitrate=1325.7kbits/s speed=0.954x    
  
  video:1707kB audio:149kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.437266%
  
  [aac @ 0xf5cb747540] Qavg: 202.422
  
  [libx264 @ 0xf5cb748ac0] frame I:2     Avg QP:15.83  size: 78710
  
  [libx264 @ 0xf5cb748ac0] frame P:183   Avg QP:21.13  size:  7293
  
  [libx264 @ 0xf5cb748ac0] frame B:106   Avg QP:26.82  size:  2406
  
  [libx264 @ 0xf5cb748ac0] consecutive B-frames: 47.8% 10.3%  2.1% 39.9%
  
  [libx264 @ 0xf5cb748ac0] mb I  I16..4: 22.1% 32.5% 45.4%
  
  [libx264 @ 0xf5cb748ac0] mb P  I16..4:  0.8%  1.4%  0.2%  P16..4: 25.3%  6.3%  3.1%  0.0%  0.0%    skip:62.9%
  
  [libx264 @ 0xf5cb748ac0] mb B  I16..4:  0.1%  0.2%  0.0%  B16..8: 39.0%  1.7%  0.2%  direct: 0.4%  skip:58.5%  L0:47.3% L1:49.6% BI: 3.1%
  
  [libx264 @ 0xf5cb748ac0] 8x8 transform intra:50.3% inter:57.9%
  
  [libx264 @ 0xf5cb748ac0] coded y,uvDC,uvAC intra: 49.5% 65.3% 23.0% inter: 7.8% 10.2% 0.5%
  
  [libx264 @ 0xf5cb748ac0] i16 v,h,dc,p: 30% 32% 11% 27%
  
  [libx264 @ 0xf5cb748ac0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 25% 21% 23%  4%  5%  7%  5%  5%  5%
  
  [libx264 @ 0xf5cb748ac0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 23% 15% 11%  8%  8%  9%  7% 12%  7%
  
  [libx264 @ 0xf5cb748ac0] i8c dc,h,v,p: 51% 20% 21%  8%
  
  [libx264 @ 0xf5cb748ac0] Weighted P-Frames: Y:0.0% UV:0.0%
  
  [libx264 @ 0xf5cb748ac0] ref P L0: 79.8% 11.4%  7.6%  1.2%
  
  [libx264 @ 0xf5cb748ac0] ref B L0: 96.9%  2.8%  0.4%
  
  [libx264 @ 0xf5cb748ac0] ref B L1: 97.7%  2.3%
  
  [libx264 @ 0xf5cb748ac0] kb/s:1200.72
  
  Exiting normally, received signal 15.

  Command generated by my Python script with avi :

  Input #0, mp3, from './stream_audio.mp3':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf57.41.100
  
    Duration: 00:00:29.59, start: 0.023021, bitrate: 128 kb/s
  
      Stream #0:0: Audio: mp3, 48000 Hz, stereo, s16p, 128 kb/s
  
      Metadata:
  
        encoder         : Lavc57.48
  
  Input #1, rawvideo, from 'pipe:':
  
    Duration: N/A, start: 0.000000, bitrate: 552960 kb/s
  
      Stream #1:0: Video: rawvideo (RGB[24] / 0x18424752), rgb24, 1280x720, 552960 kb/s, 25 tbr, 25 tbn, 25 tbc
  
  Please use -b:a or -b:v, -b is ambiguous
  
  [avi @ 0x82147c30e0] Using AVStream.codec to pass codec parameters to muxers is deprecated, use AVStream.codecpar instead.
  
      Last message repeated 1 times
  
  Output #0, avi, to 'out.avi':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      ISFT            : Lavf57.41.100
  
      Stream #0:0: Audio: mp3 (libmp3lame) (U[0][0][0] / 0x0055), 48000 Hz, stereo, s16p
  
      Metadata:
  
        encoder         : Lavc57.48.101 libmp3lame
  
      Stream #0:1: Video: mpeg4 (FMP4 / 0x34504D46), yuv420p, 1280x720, q=2-31, 4096 kb/s, 25 fps, 25 tbn, 25 tbc
  
      Metadata:
  
        encoder         : Lavc57.48.101 mpeg4
  
      Side data:
  
        cpb: bitrate max/min/avg: 0/0/4096000 buffer size: 0 vbv_delay: -1
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (mp3 (native) -> mp3 (libmp3lame))
  
    Stream #1:0 -> #0:1 (rawvideo (native) -> mpeg4 (native))
  
  [rawvideo @ 0x821479f820] Thread message queue blocking; consider raising the thread_queue_size option (current value: 8)
  
  frame=   14 fps=0.0 q=2.6 size=     553kB time=00:00:00.56 bitrate=8082.6kbits/s speed= 1.1x    
  
  frame=   27 fps= 27 q=5.4 size=     858kB time=00:00:01.08 bitrate=6507.5kbits/s speed=1.06x    
  
  frame=   40 fps= 26 q=5.9 size=    1089kB time=00:00:01.60 bitrate=5574.9kbits/s speed=1.05x    
  
  frame=   52 fps= 26 q=5.5 size=    1332kB time=00:00:02.08 bitrate=5225.6kbits/s speed=1.03x    
  
  frame=   65 fps= 26 q=4.9 size=    1582kB time=00:00:02.60 bitrate=4985.6kbits/s speed=1.03x    
  
  frame=   78 fps= 26 q=4.3 size=    1816kB time=00:00:03.12 bitrate=4768.1kbits/s speed=1.03x    
  
  frame=   90 fps= 25 q=2.8 size=    2035kB time=00:00:03.60 bitrate=4631.7kbits/s speed=1.02x    
  
  frame=  103 fps= 25 q=2.3 size=    2288kB time=00:00:04.12 bitrate=4549.8kbits/s speed=1.02x    
  
  frame=  116 fps= 25 q=2.4 size=    2558kB time=00:00:04.64 bitrate=4516.3kbits/s speed=1.02x    
  
  frame=  128 fps= 25 q=2.3 size=    2835kB time=00:00:05.12 bitrate=4535.4kbits/s speed=1.01x    
  
  frame=  141 fps= 25 q=3.1 size=    3103kB time=00:00:05.64 bitrate=4506.6kbits/s speed=1.01x    
  
  frame=  154 fps= 25 q=2.8 size=    3381kB time=00:00:06.16 bitrate=4495.9kbits/s speed=1.01x    
  
  frame=  166 fps= 25 q=3.4 size=    3648kB time=00:00:06.64 bitrate=4494.9kbits/s speed=1.01x    
  
  frame=  179 fps= 25 q=3.3 size=    3894kB time=00:00:07.16 bitrate=4455.7kbits/s speed=1.01x    
  
  frame=  192 fps= 25 q=3.2 size=    4128kB time=00:00:07.68 bitrate=4402.9kbits/s speed=1.01x    
  
  frame=  204 fps= 25 q=3.4 size=    4404kB time=00:00:08.16 bitrate=4420.9kbits/s speed=1.01x    
  
  frame=  217 fps= 25 q=2.0 size=    4592kB time=00:00:08.68 bitrate=4334.0kbits/s speed=1.01x    
  
  frame=  230 fps= 25 q=2.0 size=    4657kB time=00:00:09.20 bitrate=4147.2kbits/s speed=1.01x    
  
  frame=  242 fps= 25 q=2.0 size=    4736kB time=00:00:09.68 bitrate=4007.9kbits/s speed=1.01x    
  
  frame=  255 fps= 25 q=2.0 size=    4830kB time=00:00:10.20 bitrate=3879.0kbits/s speed=1.01x    
  
  frame=  267 fps= 25 q=2.0 size=    4953kB time=00:00:10.68 bitrate=3799.5kbits/s speed=1.01x    
  
  frame=  280 fps= 25 q=2.0 size=    5093kB time=00:00:11.20 bitrate=3722.3kbits/s speed=1.01x    
  
  frame=  291 fps= 25 q=2.0 Lsize=    5209kB time=00:00:11.68 bitrate=3650.9kbits/s speed=1.01x    
  
  video:4998kB audio:183kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.542552%
  
  Exiting normally, received signal 15.

  Pure command line for mp4 format :

  Input #0, mp3, from './stream_audio.mp3':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf57.41.100
  
    Duration: 00:00:29.59, start: 0.023021, bitrate: 128 kb/s
  
      Stream #0:0: Audio: mp3, 48000 Hz, stereo, s16p, 128 kb/s
  
      Metadata:
  
        encoder         : Lavc57.48
  
  Input #1, rawvideo, from 'pipe:':
  
    Duration: N/A, start: 0.000000, bitrate: 552960 kb/s
  
      Stream #1:0: Video: rawvideo (RGB[24] / 0x18424752), rgb24, 1280x720, 552960 kb/s, 25 tbr, 25 tbn, 25 tbc
  
  [libx264 @ 0x75fc583aa0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 AVX2 LZCNT BMI2
  
  [libx264 @ 0x75fc583aa0] profile High, level 3.1
  
  [libx264 @ 0x75fc583aa0] 264 - core 148 r2708 86b7198 - H.264/MPEG-4 AVC codec - Copyleft 2003-2016 - 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
  
  [mp4 @ 0x75fc581280] Using AVStream.codec to pass codec parameters to muxers is deprecated, use AVStream.codecpar instead.
  
      Last message repeated 1 times
  
  Output #0, mp4, to 'out.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf57.41.100
  
      Stream #0:0: Audio: aac (LC) ([64][0][0][0] / 0x0040), 48000 Hz, stereo, fltp, 128 kb/s
  
      Metadata:
  
        encoder         : Lavc57.48.101 aac
  
      Stream #0:1: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 1280x720, q=-1--1, 25 fps, 12800 tbn, 25 tbc
  
      Metadata:
  
        encoder         : Lavc57.48.101 libx264
  
      Side data:
  
        cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (mp3 (native) -> aac (native))
  
    Stream #1:0 -> #0:1 (rawvideo (native) -> h264 (libx264))
  
  [rawvideo @ 0x75fc55d840] Thread message queue blocking; consider raising the thread_queue_size option (current value: 8)
  
  frame=   14 fps=0.0 q=0.0 size=       0kB time=00:00:00.00 bitrate=N/A speed=   0x    
  
  frame=   27 fps= 27 q=0.0 size=       0kB time=00:00:00.00 bitrate=N/A speed=   0x    
  
  frame=   39 fps= 26 q=0.0 size=       0kB time=00:00:00.00 bitrate=N/A speed=   0x    
  
  frame=   52 fps= 26 q=28.0 size=     113kB time=00:00:00.00 bitrate=N/A speed=   0x    
  
  frame=   65 fps= 26 q=28.0 size=     188kB time=00:00:00.48 bitrate=3209.4kbits/s speed=0.191x    
  
  frame=   77 fps= 26 q=28.0 size=     320kB time=00:00:01.00 bitrate=2615.3kbits/s speed=0.332x    
  
  frame=   90 fps= 26 q=28.0 size=     450kB time=00:00:01.51 bitrate=2431.3kbits/s speed=0.43x    
  
  frame=  102 fps= 25 q=28.0 size=     591kB time=00:00:01.98 bitrate=2442.1kbits/s speed=0.493x    
  
  frame=  115 fps= 25 q=28.0 size=     731kB time=00:00:02.51 bitrate=2377.6kbits/s speed=0.556x    
  
  frame=  128 fps= 25 q=28.0 size=     845kB time=00:00:03.00 bitrate=2307.7kbits/s speed=0.596x    
  
  frame=  140 fps= 25 q=28.0 size=     930kB time=00:00:03.52 bitrate=2164.6kbits/s speed=0.636x    
  
  frame=  153 fps= 25 q=28.0 size=     983kB time=00:00:04.03 bitrate=1996.7kbits/s speed=0.668x    
  
  frame=  165 fps= 25 q=28.0 size=    1063kB time=00:00:04.52 bitrate=1925.2kbits/s speed=0.691x    
  
  frame=  178 fps= 25 q=28.0 size=    1122kB time=00:00:05.03 bitrate=1826.2kbits/s speed=0.714x    
  
  frame=  191 fps= 25 q=28.0 size=    1203kB time=00:00:05.52 bitrate=1783.6kbits/s speed=0.732x    
  
  frame=  203 fps= 25 q=28.0 size=    1270kB time=00:00:06.03 bitrate=1723.7kbits/s speed=0.749x    
  
  frame=  216 fps= 25 q=28.0 size=    1339kB time=00:00:06.52 bitrate=1680.5kbits/s speed=0.763x    
  
  frame=  228 fps= 25 q=28.0 size=    1443kB time=00:00:07.06 bitrate=1674.1kbits/s speed=0.779x    
  
  frame=  241 fps= 25 q=28.0 size=    1558kB time=00:00:07.55 bitrate=1690.0kbits/s speed=0.789x    
  
  frame=  254 fps= 25 q=28.0 size=    1654kB time=00:00:08.04 bitrate=1685.0kbits/s speed=0.799x    
  
  frame=  266 fps= 25 q=28.0 size=    1738kB time=00:00:08.55 bitrate=1664.6kbits/s speed=0.809x    
  
  frame=  279 fps= 25 q=28.0 size=    1750kB time=00:00:09.06 bitrate=1581.2kbits/s speed=0.818x    
  
  frame=  291 fps= 25 q=28.0 size=    1765kB time=00:00:09.55 bitrate=1512.7kbits/s speed=0.825x    
  
  frame=  300 fps= 25 q=28.0 size=    1779kB time=00:00:11.73 bitrate=1242.1kbits/s speed=0.971x    
  
  frame=  300 fps= 24 q=-1.0 Lsize=    1917kB time=00:00:12.01 bitrate=1307.2kbits/s speed=0.955x    
  
  video:1720kB audio:188kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.488004%
  
  [aac @ 0x75fc582520] Qavg: 221.585
  
  [libx264 @ 0x75fc583aa0] frame I:2     Avg QP:15.83  size: 78710
  
  [libx264 @ 0x75fc583aa0] frame P:185   Avg QP:21.02  size:  7259
  
  [libx264 @ 0x75fc583aa0] frame B:113   Avg QP:26.59  size:  2298
  
  [libx264 @ 0x75fc583aa0] consecutive B-frames: 46.3% 10.0%  1.0% 42.7%
  
  [libx264 @ 0x75fc583aa0] mb I  I16..4: 22.1% 32.5% 45.4%
  
  [libx264 @ 0x75fc583aa0] mb P  I16..4:  0.8%  1.4%  0.2%  P16..4: 25.2%  6.3%  3.1%  0.0%  0.0%    skip:63.0%
  
  [libx264 @ 0x75fc583aa0] mb B  I16..4:  0.1%  0.2%  0.0%  B16..8: 37.3%  1.6%  0.2%  direct: 0.4%  skip:60.2%  L0:47.3% L1:49.6% BI: 3.0%
  
  [libx264 @ 0x75fc583aa0] 8x8 transform intra:50.5% inter:58.1%
  
  [libx264 @ 0x75fc583aa0] coded y,uvDC,uvAC intra: 49.4% 65.2% 22.9% inter: 7.7% 10.0% 0.5%
  
  [libx264 @ 0x75fc583aa0] i16 v,h,dc,p: 29% 32% 11% 28%
  
  [libx264 @ 0x75fc583aa0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 26% 21% 23%  4%  5%  6%  5%  5%  5%
  
  [libx264 @ 0x75fc583aa0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 23% 15% 11%  8%  8%  9%  7% 12%  7%
  
  [libx264 @ 0x75fc583aa0] i8c dc,h,v,p: 51% 20% 21%  8%
  
  [libx264 @ 0x75fc583aa0] Weighted P-Frames: Y:0.0% UV:0.0%
  
  [libx264 @ 0x75fc583aa0] ref P L0: 79.7% 11.4%  7.7%  1.2%
  
  [libx264 @ 0x75fc583aa0] ref B L0: 96.8%  2.9%  0.4%
  
  [libx264 @ 0x75fc583aa0] ref B L1: 97.7%  2.3%
  
  [libx264 @ 0x75fc583aa0] kb/s:1173.39

• ffmpeg pipe webcam stream input to two outputs image and video with audio included

  23 septembre 2017, par Arianna Gomez Vargas

  I have the next command :

  sudo ffmpeg -ar 44100 -ac 2 -f alsa -i hw:1,0 -f v4l2 -codec:v h264       -codec:a aac -ab 128k -framerate 30 -video_size hd720 -itsoffset 0.5 -i /dev/video0 -vf fps=1 snapsh%d.png -f mpeg -b:v 5000k -copyinkf -codec:v copy -codec:a aac -ab 128k -g 10 - | sudo ffmpeg -y -i - out.mp4

  and the objetive it is record audio and video simultaneously, and pipe the output to be capable to take screnshots of the output video. I’m using a logitech webcam, raspberry pi 3, the last version of ffmpeg with h264 and alsa support.

  But it is not working for me :(, I think that the problem it is enconding the audio stream, but I can find a solution yet.
  Someone have any suggest ? Thanks

  This is the output

  ffmpeg version N-86204-g8794cfb Copyright (c) 2000-2017 the FFmpeg developers
  
  built with gcc 4.9.2 (Raspbian 4.9.2-10)
  
  configuration: --enable-nonfree --enable-gpl --enable-libx264 --enable-libfdk-aac
  
  libavutil 55. 63.100 / 55. 63.100
  
  libavcodec 57. 96.101 / 57. 96.101
  
  libavformat 57. 72.101 / 57. 72.101
  
  libavdevice 57. 7.100 / 57. 7.100
  
  libavfilter 6. 90.100 / 6. 90.100
  
  libswscale 4. 7.101 / 4. 7.101
  
  libswresample 2. 8.100 / 2. 8.100
  
  libpostproc 54. 6.100 / 54. 6.100
  
  Guessed Channel Layout for Input Stream #0.0 : stereo
  
  Input #0, alsa, from 'hw:1,0':
  
  Duration: N/A, start: 1506129856.832380, bitrate: 1024 kb/s
  
  Stream #0:0: Audio: pcm_s16le, 32000 Hz, stereo, s16, 1024 kb/s
  
  Input #1, video4linux2,v4l2, from '/dev/video0':
  
  Duration: N/A, start: 1821.745623, bitrate: N/A
  
  Stream #1:0: Video: h264 (Constrained Baseline), yuvj420p(pc, progressive), 1280x720 [SAR 1:1 DAR 16:9], 30 fps, 30 tbr, 1000k tbn, 60 tbc
  
  Stream mapping:
  
  Stream #1:0 -> #0:0 (h264 (native) -> png (native))
  
  Stream #1:0 -> #1:0 (copy)
  
  Stream #0:0 -> #1:1 (pcm_s16le (native) -> aac (native))
  
  Press [q] to stop, [?] for help
  
  [video4linux2,v4l2 @ 0x23a2710] Thread message queue blocking; consider raising the thread_queue_size option (current value: 8)
  
  [swscaler @ 0x25d4f40] deprecated pixel format used, make sure you did set range correctly
  
  [swscaler @ 0x25d4f40] No accelerated colorspace conversion found from yuv420p to rgb24.
  
  Output #0, image2, to '/home/pi/proyecto-aula-master/Videos/snapsh%d.png':
  
  Metadata:
  
  encoder : Lavf57.72.101
  
  Stream #0:0: Video: png, rgb24, 1280x720 [SAR 1:1 DAR 16:9], q=2-31, 200 kb/s, 1 fps, 1 tbn, 1 tbc
  
  Metadata:
  
  encoder : Lavc57.96.101 png
  
  [alsa @ 0x23904f0] Thread message queue blocking; consider raising the thread_queue_size option (current value: 8)
  
  [mpeg @ 0x23a48d0] VBV buffer size not set, using default size of 130KB
  
  If you want the mpeg file to be compliant to some specification
  
  Like DVD, VCD or others, make sure you set the correct buffer size
  
  Output #1, mpeg, to 'pipe:':
  
  Metadata:
  
  encoder : Lavf57.72.101
  
  Stream #1:0: Video: h264 (Constrained Baseline), yuvj420p(pc, progressive), 1280x720 [SAR 1:1 DAR 16:9], q=2-31, 5000 kb/s, 30 fps, 30 tbr, 90k tbn, 30 tbc
  
  Stream #1:1: Audio: aac (LC), 32000 Hz, stereo, fltp, 128 kb/s
  
  Metadata:
  
  encoder : Lavc57.96.101 aac
  
  [mpeg @ 0x23a48d0] Non-monotonous DTS in output stream 1:0; previous: 45000, current: 29998; changing to 45001. This may result in incorrect timestamps in the output file.
  
  [mpeg @ 0x23a48d0] Non-monotonous DTS in output stream 1:0; previous: 45001, current: 32879; changing to 45002. This may result in incorrect timestamps in the output file.
  
  [mpeg @ 0x23a48d0] Non-monotonous DTS in output stream 1:0; previous: 45002, current: 35759; changing to 45003. This may result in incorrect timestamps in the output file.
  
  [mpeg @ 0x23a48d0] Non-monotonous DTS in output stream 1:0; previous: 45003, current: 38999; changing to 45004. This may result in incorrect timestamps in the output file.
  
  [mpeg @ 0x23a48d0] Non-monotonous DTS in output stream 1:0; previous: 45004, current: 41880; changing to 45005. This may result in incorrect timestamps in the output file.
  
  [mpeg @ 0x23a48d0] Non-monotonous DTS in output stream 1:0; previous: 45005, current: 44759; changing to 45006. This may result in incorrect timestamps in the output file.
  
  frame= 0 fps=0.0 q=0.0 q=-1.0 size=N/A time=00:00:01.09 bitrate=N/A speed=2.0frame= 2 fps=1.8 q=0.0 q=-1.0 size=N/A time=00:00:01.76 bitrate=N/A dup=1 dro[alsa @ 0x23904f0] ALSA buffer xrun.
  
  frame= 3 fps=1.8 q=-0.0 q=-1.0 size=N/A time=00:00:02.19 bitrate=N/A dup=1 drframe= 3 fps=1.4 q=-0.0 q=-1.0 size=N/A time=00:00:02.86 bitrate=N/A dup=1 drframe= 4 fps=1.5 q=-0.0 q=-1.0 size=N/A time=00:00:03.36 bitrate=N/A dup=1 drframe= 4 fps=1.3 q=-0.0 q=-1.0 size=N/A time=00:00:03.86 bitrate=N/A dup=1 drframe= 5 fps=1.4 q=-0.0 q=-1.0 size=N/A time=00:00:04.36 bitrate=N/A dup=1 drframe= 5 fps=1.2 q=-0.0 q=-1.0 size=N/A time=00:00:04.86 bitrate=N/A dup=1 dr[alsa @ 0x23904f0] ALSA buffer xrun.
  
  [mp2 @ 0x262b660] Header missing
  
  frame= 6 fps=1.2 q=-0.0 q=-1.0 size=N/A time=00:00:05.38 bitrate=N/A dup=1 drframe= 7 fps=1.3 q=-0.0 q=-1.0 size=N/A time=00:00:06.16 bitrate=N/A dup=1 drframe= 7 fps=1.2 q=-0.0 q=-1.0 size=N/A time=00:00:06.79 bitrate=N/A dup=1 drframe= 8 fps=1.2 q=-0.0 q=-1.0 size=N/A time=00:00:07.29 bitrate=N/A dup=1 drframe= 8 fps=1.1 q=-0.0 q=-1.0 size=N/A time=00:00:07.79 bitrate=N/A dup=1 dr[alsa @ 0x23904f0] ALSA buffer xrun.
  
  frame= 9 fps=1.2 q=-0.0 q=-1.0 size=N/A time=00:00:08.16 bitrate=N/A dup=1 dr[mpeg @ 0x262a1c0] DTS discontinuity in stream 1: packet 6 with DTS 92886, packet 7 with DTS 95880
  
  frame= 9 fps=1.1 q=-0.0 q=-1.0 size=N/A time=00:00:08.38 bitrate=N/A dup=1 drframe= 10 fps=1.1 q=-0.0 q=-1.0 size=N/A time=00:00:09.19 bitrate=N/A dup=1 drframe= 10 fps=1.1 q=-0.0 q=-1.0 size=N/A time=00:00:09.96 bitrate=N/A dup=1 drframe= 11 fps=1.1 q=-0.0 q=-1.0 size=N/A time=00:00:10.39 bitrate=N/A dup=1 drframe= 11 fps=1.1 q=-0.0 q=-1.0 size=N/A time=00:00:10.96 bitrate=N/A dup=1 dr[alsa @ 0x23904f0] ALSA buffer xrun.
  
  frame= 12 fps=1.1 q=-0.0 q=-1.0 size=N/A time=00:00:11.40 bitrate=N/A dup=1 drframe= 12 fps=1.1 q=-0.0 q=-1.0 size=N/A time=00:00:12.06 bitrate=N/A dup=1 drframe= 13 fps=1.1 q=-0.0 q=-1.0 size=N/A time=00:00:12.56 bitrate=N/A dup=1 drframe= 13 fps=1.1 q=-0.0 q=-1.0 size=N/A time=00:00:13.06 bitrate=N/A dup=1 drframe= 14 fps=1.1 q=-0.0 q=-1.0 size=N/A time=00:00:13.56 bitrate=N/A dup=1 drframe= 14 fps=1.0 q=-0.0 q=-1.0 size=N/A time=00:00:14.06 bitrate=N/A dup=1 dr[alsa @ 0x23904f0] ALSA buffer xrun.
  
  [mpeg @ 0x262a1c0] decoding for stream 0 failed
  
  [mpeg @ 0x262a1c0] Could not find codec parameters for stream 0 (Audio: mp2, 0 channels, s16p): unspecified frame size
  
  Consider increasing the value for the 'analyzeduration' and 'probesize' options
  
  Input #0, mpeg, from 'pipe:':
  
  Duration: N/A, start: 0.500000, bitrate: N/A
  
  Stream #0:0[0x1c0]: Audio: mp2, 0 channels, s16p
  
  Stream #0:1[0x1e2]: Video: h264 (Constrained Baseline), yuvj420p(pc, progressive), 1280x720 [SAR 1:1 DAR 16:9], 30 fps, 30 tbr, 90k tbn, 60 tbc
  
  Stream mapping:
  
  Stream #0:1 -> #0:0 (h264 (native) -> h264 (libx264))
  
  Stream #0:0 -> #0:1 (mp2 (native) -> aac (native))
  
  [mp2 @ 0x262cde0] Header missing
  
  Error while decoding stream #0:0: Invalid data found when processing input
  
  No pixel format specified, yuvj420p for H.264 encoding chosen.
  
  Use -pix_fmt yuv420p for compatibility with outdated media players.
  
  [libx264 @ 0x26417d0] using SAR=1/1
  
  [libx264 @ 0x26417d0] using cpu capabilities: ARMv6 NEON
  
  [libx264 @ 0x26417d0] profile High, level 3.1
  
  [libx264 @ 0x26417d0] 264 - core 150 r2833 df79067 - H.264/MPEG-4 AVC codec - Copyleft 2003-2017 - 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
  
  frame= 19 fps=0.0 q=0.0 size= 0kB time=-577014:32:22.77 bitrate= -0.0kbframe= 36 fps= 34 q=0.0 size= 0kB time=-577014:32:22.77 bitrate= -0.0kbframe= 47 fps=9.5 q=0.0 size= 0kB time=-577014:32:22.77 bitrate= -0.0kbframe= 52 fps=9.2 q=0.0 size= 0kB time=-577014:32:22.77 bitrate= -0.0kbframe= 56 fps=9.0 q=0.0 size= 0kB time=-577014:32:22.77 bitrate= -0.0kbframe= 60 fps=8.8 q=0.0 size= 0kB time=-577014:32:22.77 bitrate= -0.0kbframe= 64 fps=8.6 q=0.0 size= 0kB time=-577014:32:22.77 bitrate= -0.0kbframe= 69 fps=7.2 q=0.0 size= 0kB time=-577014:32:22.77 bitrate= -0.0kbframe= 71 fps=7.0 q=0.0 size= 0kB time=-577014:32:22.77 bitrate= -0.0kbframe= 73 fps=6.9 q=0.0 size= 0kB time=-577014:32:22.77 bitrate= -0.0kbframe= 76 fps=6.2 q=0.0 size= 0kB time=-577014:32:22.77 bitrate= -0.0kbframe= 80 fps=6.3 q=0.0 size= 0kB time=-577014:32:22.77 bitrate= -0.0kbframe= 82 fps=5.8 q=0.0 size= 0kB time=-577014:32:22.77 bitrate= -0.0kbframe= 85 fps=5.8 q=0.0 size= 0kB time=-577014:32:22.77 bitrate= -0.0kbframe= 87 fps=5.7 q=0.0 size= 0kB time=-577014:32:22.77 bitrate= -0.0kbframe= 89 fps=5.4 q=0.0 size= 0kB time=-577014:32:22.77 bitrate= -0.0kbframe= 90 fps=5.3 q=0.0 size= 0kB time=-577014:32:22.77 bitrate= -0.0kbframe= 93 fps=5.3 q=0.0 size= 0kB time=-577014:32:22.77 bitrate= -0.0kbframe= 95 fps=5.2 q=0.0 size= 0kB time=-577014:32:22.77 bitrate= -0.0kbframe= 97 fps=5.0 q=0.0 size= 0kB time=-577014:32:22.77 bitrate= -0.0kbframe= 99 fps=5.0 q=0.0 size= 0kB time=-577014:32:22.77 bitrate= -0.0kbframe= 102 fps=5.0 q=0.0 size= 0kB time=-577014:32:22.77 bitrate= -0.0kbframe= 103 fps=4.9 q=0.0 size= 0kB time=-577014:32:22.77 bitrate= -0.0kbframe= 105 fps=4.7 q=0.0 size= 0kB time=-577014:32:22.77 bitrate= -0.0kbframe= 108 fps=4.7 q=0.0 size= 0kB time=-577014:32:22.77 bitrate= -0.0kbframe= 110 fps=4.7 q=0.0 size= 0kB time=-577014:32:22.77 bitrate= -0.0kbframe= 112 fps=4.6 q=0.0 size= 0kB time=-577014:32:22.77 bitrate= -0.0kbframe= 114 fps=4.5 q=0.0 size= 0kB time=-577014:32:22.77 bitrate= -0.0kbframe= 117 fps=4.5 q=0.0 size= 0kB time=-577014:32:22.77 bitrate= -0.0kbframe= 120 fps=4.5 q=0.0 size= 0kB time=-577014:32:22.77 bitrate= -0.0kbframe= 122 fps=4.4 q=0.0 size= 0kB time=-577014:32:22.77 bitrate= -0.0kbframe= 123 fps=4.4 q=0.0 size= 0kB time=-577014:32:22.77 bitrate= -0.0kbframe= 126 fps=4.3 q=0.0 size= 0kB time=-577014:32:22.77 bitrate= -0.0kbframe= 128 fps=4.3 q=0.0 size= 0kB time=-577014:32:22.77 bitrate= -0.0kbframe= 130 fps=4.2 q=0.0 size= 0kB time=-577014:32:22.77 bitrate= -0.0kbframe= 132 fps=4.2 q=0.0 size= 0kB time=-577014:32:22.77 bitrate= -0.0kbframe= 135 fps=4.2 q=0.0 size= 0kB time=-577014:32:22.77 bitrate= -0.0kbframe= 138 fps=4.2 q=0.0 size= 0kB time=-577014:32:22.77 bitrate= -0.0kbToo many packets buffered for output stream 0:0.
  
  [libx264 @ 0x26417d0] frame I:1 Avg QP:16.64 size: 29761
  
  [libx264 @ 0x26417d0] frame P:36 Avg QP:21.71 size: 9196
  
  [libx264 @ 0x26417d0] frame B:92 Avg QP:24.13 size: 4641
  
  [libx264 @ 0x26417d0] consecutive B-frames: 0.8% 0.0% 32.1% 67.2%
  
  [libx264 @ 0x26417d0] mb I I16..4: 24.3% 49.7% 25.9%
  
  [libx264 @ 0x26417d0] mb P I16..4: 11.2% 10.0% 0.2% P16..4: 41.0% 6.2% 3.7% 0.0% 0.0% skip:27.7%
  
  [libx264 @ 0x26417d0] mb B I16..4: 5.0% 5.5% 0.0% B16..8: 40.1% 3.0% 0.2% direct: 1.6% skip:44.6% L0:59.9% L1:38.4% BI: 1.7%
  
  [libx264 @ 0x26417d0] 8x8 transform intra:49.7% inter:79.4%
  
  [libx264 @ 0x26417d0] coded y,uvDC,uvAC intra: 10.0% 13.9% 0.3% inter: 8.6% 11.3% 0.0%
  
  [libx264 @ 0x26417d0] i16 v,h,dc,p: 43% 24% 16% 16%
  
  [libx264 @ 0x26417d0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 42% 18% 36% 1% 0% 0% 1% 0% 1%
  
  [libx264 @ 0x26417d0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 50% 19% 16% 3% 2% 2% 3% 3% 3%
  
  [libx264 @ 0x26417d0] i8c dc,h,v,p: 70% 14% 16% 0%
  
  [libx264 @ 0x26417d0] Weighted P-Frames: Y:2.8% UV:0.0%
  
  [libx264 @ 0x26417d0] ref P L0: 39.8% 7.3% 42.5% 10.4% 0.0%
  
  [libx264 @ 0x26417d0] ref B L0: 44.7% 41.0% 14.2%
  
  [libx264 @ 0x26417d0] ref B L1: 70.0% 30.0%
  
  [libx264 @ 0x26417d0] kb/s:1465.58
  
  Exiting normally, received signal 2.

• ffmpeg - splitting, overlaying and selecting frame range in multiple input/outputs with complex video filter producing empty output

  11 octobre 2017, par Josep Carner

  I am trying to use ffmpeg to apply multiple filters -single input, multiple outputs-. In concrete, I am splitting the output in two, then applying an overlaying patch to one of those streams, split again and select a time range. The command I am using is :

     ffmpeg \
  
      -i ./dataset_test/videos/jz_10_huron_barstow.mkv \
  
      -an \
  
      -sn \
  
      -loglevel error \
  
      -filter_complex \
  
          "[0:v]split=2[L_in][F_in];
  
           [L_in]
  
              crop=226:307:21:74,scale=200x200,setdar=200:200,split=2\
  
           [L_in_0][L_in_1];\
  
           color=#808080:226x307,setpts=PTS-STARTPTS[L_PATCH];\
  
           [F_in][L_PATCH]
  
              overlay=21:74:shortest=1,scale=200x200,setdar=200:200,split=2\
  
           [F_in_0][F_in_1];\
  
           [F_in_0]select='between(t\,32\,212)',select='not(mod(n\,20))',setpts=(PTS-STARTPTS)/20[F_0];\
  
           [F_in_1]select='between(t\,213\,393)',select='not(mod(n\,20))',setpts=(PTS-STARTPTS)/20[F_1];\
  
           [L_in_0]select='between(t\,32\,212)',select='not(mod(n\,20))',setpts=(PTS-STARTPTS)/20[L_0];\
  
           [L_in_1]select='between(t\,213\,393)',select='not(mod(n\,20))',setpts=(PTS-STARTPTS)/20[L_1]\
  
           "\
  
      -map [F_0] -an -sn ./out/jz_10_huron_barstow/F/0_F.mp4\
  
      -map [F_1] -an -sn ./out/jz_10_huron_barstow/F/1_F.mp4\
  
      -map [L_0] -an -sn ./out/jz_10_huron_barstow/L/0_L.mp4\
  
      -map [L_1] -an -sn ./out/jz_10_huron_barstow/L/1_L.mp4\

  For some reason, 0_F.mp4 is empty and 1_F.mp4 is cropped. My intuition is that it has something to do with applying splitting + overlaying + selecting. I think at some point some filter before select is changing the PTS of the frames in some way select is not properly discarding them, but I honestly don’t know how to solve it. Some insights :

  1. L_0 and L_1 are fine (no overlay is used in those two)

  2. If I suppress L outputs everything works fine (no "split" is needed at the beginning)

  Could someone provide some light ? I don’t really know what else to try.
  The logs with loglevel 40 are (some repeated lines ommited) :

  ffmpeg version 2.8.1 Copyright (c) 2000-2015 the FFmpeg developers
  
    built with Apple LLVM version 9.0.0 (clang-900.0.37)
  
    configuration: --prefix=/usr/local/Cellar/ffmpeg/2.8.1_1 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-opencl --enable-libx264 --enable-libmp3lame --enable-libvo-aacenc --enable-libxvid --enable-vda
  
    libavutil      54. 31.100 / 54. 31.100
  
    libavcodec     56. 60.100 / 56. 60.100
  
    libavformat    56. 40.101 / 56. 40.101
  
    libavdevice    56.  4.100 / 56.  4.100
  
    libavfilter     5. 40.101 /  5. 40.101
  
    libavresample   2.  1.  0 /  2.  1.  0
  
    libswscale      3.  1.101 /  3.  1.101
  
    libswresample   1.  2.101 /  1.  2.101
  
    libpostproc    53.  3.100 / 53.  3.100
  
  Input #0, matroska,webm, from './dataset_test/videos/jz_10_huron_barstow.mkv':
  
    Metadata:
  
      ENCODER         : Lavf57.66.104
  
    Duration: 00:24:04.14, start: 0.000000, bitrate: 2117 kb/s
  
      Stream #0:0: Video: h264 (Main), 1 reference frame, yuv420p, 1440x900 (1440x912) [SAR 1:1 DAR 8:5], 30 fps, 30 tbr, 1k tbn, 60 tbc (default)
  
      Metadata:
  
        ENCODER         : Lavc57.83.100 h264_nvenc
  
        DURATION        : 00:24:04.102000000
  
      Stream #0:1: Audio: ac3, 48000 Hz, stereo, fltp, 192 kb/s (default)
  
      Metadata:
  
        ENCODER         : Lavc57.83.100 ac3
  
        DURATION        : 00:24:04.135000000
  
  [Parsed_scale_2 @ 0x7fdfd2403d20] w:200 h:200 flags:'bilinear' interl:0
  
  [Parsed_setdar_3 @ 0x7fdfd240ad80] num:den syntax is deprecated, please use num/den or named options instead
  
  [Parsed_color_5 @ 0x7fdfd24096a0] size:226x307 rate:25/1 duration:-1.000000 sar:1/1
  
  [Parsed_scale_8 @ 0x7fdfd24092c0] w:200 h:200 flags:'bilinear' interl:0
  
  [Parsed_setdar_9 @ 0x7fdfd240b360] num:den syntax is deprecated, please use num/den or named options instead
  
  [Parsed_scale_2 @ 0x7fdfd2509b00] w:200 h:200 flags:'bilinear' interl:0
  
  [Parsed_setdar_3 @ 0x7fdfd25092c0] num:den syntax is deprecated, please use num/den or named options instead
  
  [Parsed_color_5 @ 0x7fdfd250a520] size:226x307 rate:25/1 duration:-1.000000 sar:1/1
  
  [Parsed_scale_8 @ 0x7fdfd250b620] w:200 h:200 flags:'bilinear' interl:0
  
  [Parsed_setdar_9 @ 0x7fdfd250a960] num:den syntax is deprecated, please use num/den or named options instead
  
  [graph 0 input from stream 0:0 @ 0x7fdfd2511360] w:1440 h:900 pixfmt:yuv420p tb:1/1000 fr:30/1 sar:1/1 sws_param:flags=2
  
  [Parsed_crop_1 @ 0x7fdfd2509c80] w:1440 h:900 sar:1/1 -> w:226 h:306 sar:1/1
  
  [Parsed_scale_2 @ 0x7fdfd2509b00] w:226 h:306 fmt:yuv420p sar:1/1 -> w:200 h:200 fmt:yuv420p sar:113/153 flags:0x2
  
  [Parsed_setdar_3 @ 0x7fdfd25092c0] w:200 h:200 dar:113/153 sar:113/153 -> dar:1/1 sar:1/1
  
  [Parsed_select_21 @ 0x7fdfd250a760] TB:0.001000 FRAME_RATE:30.000000 SAMPLE_RATE:nan
  
  [Parsed_select_18 @ 0x7fdfd250a080] TB:0.001000 FRAME_RATE:30.000000 SAMPLE_RATE:nan
  
  [Parsed_color_5 @ 0x7fdfd250a520] TB:0.040000 FRAME_RATE:25.000000 SAMPLE_RATE:nan
  
  [Parsed_overlay_7 @ 0x7fdfd250b020] main w:1440 h:900 fmt:yuv420p overlay w:226 h:306 fmt:yuva420p eof_action:endall
  
  [Parsed_overlay_7 @ 0x7fdfd250b020] [framesync @ 0x7fdfd250b708] Selected 1/1000 time base
  
  [Parsed_overlay_7 @ 0x7fdfd250b020] [framesync @ 0x7fdfd250b708] Sync level 2
  
  [Parsed_scale_8 @ 0x7fdfd250b620] w:1440 h:900 fmt:yuv420p sar:1/1 -> w:200 h:200 fmt:yuv420p sar:8/5 flags:0x2
  
  [Parsed_setdar_9 @ 0x7fdfd250a960] w:200 h:200 dar:8/5 sar:8/5 -> dar:1/1 sar:1/1
  
  [Parsed_select_15 @ 0x7fdfd250dd00] TB:0.001000 FRAME_RATE:30.000000 SAMPLE_RATE:nan
  
  [Parsed_select_12 @ 0x7fdfd250ca60] TB:0.001000 FRAME_RATE:30.000000 SAMPLE_RATE:nan
  
  [libx264 @ 0x7fdfd4005e00] using SAR=1/1
  
  [libx264 @ 0x7fdfd4005e00] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 AVX2 LZCNT BMI2
  
  [libx264 @ 0x7fdfd4005e00] profile High, level 1.2
  
  [libx264 @ 0x7fdfd4005e00] 264 - core 148 r2601 a0cd7d3 - 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
  
  [libx264 @ 0x7fdfd400f600] using SAR=1/1
  
  [libx264 @ 0x7fdfd400f600] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 AVX2 LZCNT BMI2
  
  [libx264 @ 0x7fdfd400f600] profile High, level 1.2
  
  [libx264 @ 0x7fdfd400f600] 264 - core 148 r2601 a0cd7d3 - 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
  
  [libx264 @ 0x7fdfd4018e00] using SAR=1/1
  
  [libx264 @ 0x7fdfd4018e00] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 AVX2 LZCNT BMI2
  
  [libx264 @ 0x7fdfd4018e00] profile High, level 1.2
  
  [libx264 @ 0x7fdfd4018e00] 264 - core 148 r2601 a0cd7d3 - 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
  
  [libx264 @ 0x7fdfd4022600] using SAR=1/1
  
  [libx264 @ 0x7fdfd4022600] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 AVX2 LZCNT BMI2
  
  [libx264 @ 0x7fdfd4022600] profile High, level 1.2
  
  [libx264 @ 0x7fdfd4022600] 264 - core 148 r2601 a0cd7d3 - 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, mp4, to './out/jz_10_huron_barstow/F/0_F.mp4':
  
    Metadata:
  
      encoder         : Lavf56.40.101
  
      Stream #0:0: Video: h264 (libx264), -1 reference frame ([33][0][0][0] / 0x0021), yuv420p, 200x200 [SAR 1:1 DAR 1:1], q=-1--1, 30 fps, 15360 tbn, 30 tbc (default)
  
      Metadata:
  
        encoder         : Lavc56.60.100 libx264
  
  Output #1, mp4, to './out/jz_10_huron_barstow/F/1_F.mp4':
  
    Metadata:
  
      encoder         : Lavf56.40.101
  
      Stream #1:0: Video: h264 (libx264), -1 reference frame ([33][0][0][0] / 0x0021), yuv420p, 200x200 [SAR 1:1 DAR 1:1], q=-1--1, 30 fps, 15360 tbn, 30 tbc (default)
  
      Metadata:
  
        encoder         : Lavc56.60.100 libx264
  
  Output #2, mp4, to './out/jz_10_huron_barstow/L/0_L.mp4':
  
    Metadata:
  
      encoder         : Lavf56.40.101
  
      Stream #2:0: Video: h264 (libx264), -1 reference frame ([33][0][0][0] / 0x0021), yuv420p, 200x200 [SAR 1:1 DAR 1:1], q=-1--1, 30 fps, 15360 tbn, 30 tbc (default)
  
      Metadata:
  
        encoder         : Lavc56.60.100 libx264
  
  Output #3, mp4, to './out/jz_10_huron_barstow/L/1_L.mp4':
  
    Metadata:
  
      encoder         : Lavf56.40.101
  
      Stream #3:0: Video: h264 (libx264), -1 reference frame ([33][0][0][0] / 0x0021), yuv420p, 200x200 [SAR 1:1 DAR 1:1], q=-1--1, 30 fps, 15360 tbn, 30 tbc (default)
  
      Metadata:
  
        encoder         : Lavc56.60.100 libx264
  
  Stream mapping:
  
    Stream #0:0 (h264) -> split
  
    setpts -> Stream #0:0 (libx264)
  
    setpts -> Stream #1:0 (libx264)
  
    setpts -> Stream #2:0 (libx264)
  
    setpts -> Stream #3:0 (libx264)
  
  Press [q] to stop, [?] for help
  
  [swscaler @ 0x7fdfd3800000] Warning: data is not aligned! This can lead to a speedloss
  
  [Parsed_overlay_7 @ 0x7fdfd250b020] [framesync @ 0x7fdfd250b708] Buffer queue overflow, dropping.
  
      Last message repeated 210 times
  
  frame=    0 fps=0.0 q=0.0 q=0.0 q=0.0 q=0.0 size=       0kB time=00:00:00.00 bitrate=N/A    
  
  [Parsed_overlay_7 @ 0x7fdfd250b020] [framesync @ 0x7fdfd250b708] Buffer queue overflow, dropping.
  
      Last message repeated 262 times
  
  frame=    0 fps=0.0 q=0.0 q=0.0 q=0.0 q=0.0 size=       0kB time=00:00:00.00 bitrate=N/A    
  
  [Parsed_overlay_7 @ 0x7fdfd250b020] [framesync @ 0x7fdfd250b708] Buffer queue overflow, dropping.
  
      Last message repeated 239 times
  
  frame=    0 fps=0.0 q=0.0 q=0.0 q=0.0 q=0.0 size=       0kB time=00:00:00.00 bitrate=N/A    
  
  [Parsed_overlay_7 @ 0x7fdfd250b020] [framesync @ 0x7fdfd250b708] Buffer queue overflow, dropping.
  
      Last message repeated 195 times
  
  frame=    0 fps=0.0 q=0.0 q=0.0 q=0.0 q=0.0 size=       0kB time=00:00:00.00 bitrate=N/A    
  
  [Parsed_overlay_7 @ 0x7fdfd250b020] [framesync @ 0x7fdfd250b708] Buffer queue overflow, dropping.
  
      Last message repeated 211 times
  
  frame=    0 fps=0.0 q=0.0 q=0.0 q=0.0 q=0.0 size=       0kB time=00:00:00.00 bitrate=N/A    
  
  [Parsed_overlay_7 @ 0x7fdfd250b020] [framesync @ 0x7fdfd250b708] Buffer queue overflow, dropping.
  
      Last message repeated 255 times
  
  frame=    0 fps=0.0 q=0.0 q=0.0 q=0.0 q=0.0 size=       0kB time=00:00:00.00 bitrate=N/A    
  
  [Parsed_overlay_7 @ 0x7fdfd250b020] [framesync @ 0x7fdfd250b708] Buffer queue overflow, dropping.
  
      Last message repeated 148 times
  
  frame=    0 fps=0.0 q=0.0 q=0.0 q=0.0 q=0.0 size=       0kB time=00:00:00.00 bitrate=N/A    
  
  [Parsed_overlay_7 @ 0x7fdfd250b020] [framesync @ 0x7fdfd250b708] Buffer queue overflow, dropping.
  
      Last message repeated 174 times
  
  frame=    0 fps=0.0 q=0.0 q=0.0 q=0.0 q=0.0 size=       0kB time=00:00:00.00 bitrate=N/A    
  
  [Parsed_overlay_7 @ 0x7fdfd250b020] [framesync @ 0x7fdfd250b708] Buffer queue overflow, dropping.
  
      Last message repeated 182 times
  
  frame=    0 fps=0.0 q=0.0 q=0.0 q=0.0 q=0.0 size=       0kB time=00:00:00.00 bitrate=N/A    
  
  [Parsed_overlay_7 @ 0x7fdfd250b020] [framesync @ 0x7fdfd250b708] Buffer queue overflow, dropping.
  
      Last message repeated 193 times
  
  frame=    0 fps=0.0 q=0.0 q=0.0 q=29.0 q=0.0 size=       0kB time=00:00:00.26 bitrate=   1.4kbits/s    
  
  [Parsed_overlay_7 @ 0x7fdfd250b020] [framesync @ 0x7fdfd250b708] Buffer queue overflow, dropping.
  
      Last message repeated 156 times
  
  frame=    0 fps=0.0 q=0.0 q=0.0 q=29.0 q=0.0 size=       0kB time=00:00:00.53 bitrate=   0.7kbits/s    
  
  [Parsed_overlay_7 @ 0x7fdfd250b020] [framesync @ 0x7fdfd250b708] Buffer queue overflow, dropping.
  
      Last message repeated 154 times
  
  frame=    0 fps=0.0 q=0.0 q=0.0 q=29.0 q=0.0 size=       0kB time=00:00:00.76 bitrate=   0.5kbits/s    
  
  [Parsed_overlay_7 @ 0x7fdfd250b020] [framesync @ 0x7fdfd250b708] Buffer queue overflow, dropping.
  
      Last message repeated 155 times
  
  frame=    0 fps=0.0 q=0.0 q=0.0 q=29.0 q=0.0 size=       0kB time=00:00:01.03 bitrate=   0.4kbits/s    
  
  [Parsed_overlay_7 @ 0x7fdfd250b020] [framesync @ 0x7fdfd250b708] Buffer queue overflow, dropping.
  
      Last message repeated 231 times
  
  frame=    0 fps=0.0 q=0.0 q=0.0 q=29.0 q=0.0 size=       0kB time=00:00:01.43 bitrate=   0.3kbits/s    
  
  [Parsed_overlay_7 @ 0x7fdfd250b020] [framesync @ 0x7fdfd250b708] Buffer queue overflow, dropping.
  
      Last message repeated 260 times
  
  frame=    0 fps=0.0 q=0.0 q=0.0 q=29.0 q=0.0 size=       0kB time=00:00:01.86 bitrate=   0.2kbits/s    
  
  [Parsed_overlay_7 @ 0x7fdfd250b020] [framesync @ 0x7fdfd250b708] Buffer queue overflow, dropping.
  
      Last message repeated 256 times
  
  frame=    0 fps=0.0 q=0.0 q=0.0 q=29.0 q=0.0 size=       0kB time=00:00:02.30 bitrate=   0.2kbits/s    
  
  [Parsed_overlay_7 @ 0x7fdfd250b020] [framesync @ 0x7fdfd250b708] Buffer queue overflow, dropping.
  
      Last message repeated 209 times
  
  frame=    0 fps=0.0 q=0.0 q=0.0 q=29.0 q=0.0 size=       0kB time=00:00:02.63 bitrate=   0.1kbits/s    
  
  [Parsed_overlay_7 @ 0x7fdfd250b020] [framesync @ 0x7fdfd250b708] Buffer queue overflow, dropping.
  
      Last message repeated 253 times
  
  frame=    0 fps=0.0 q=0.0 q=0.0 q=29.0 q=0.0 size=       0kB time=00:00:03.06 bitrate=   0.1kbits/s    
  
  [Parsed_overlay_7 @ 0x7fdfd250b020] [framesync @ 0x7fdfd250b708] Buffer queue overflow, dropping.
  
      Last message repeated 160 times
  
  frame=    0 fps=0.0 q=0.0 q=0.0 q=29.0 q=0.0 size=       0kB time=00:00:03.33 bitrate=   0.1kbits/s    
  
  [Parsed_overlay_7 @ 0x7fdfd250b020] [framesync @ 0x7fdfd250b708] Buffer queue overflow, dropping.
  
      Last message repeated 189 times
  
  frame=    0 fps=0.0 q=0.0 q=0.0 q=29.0 q=0.0 size=       0kB time=00:00:03.63 bitrate=   0.1kbits/s    
  
  [Parsed_overlay_7 @ 0x7fdfd250b020] [framesync @ 0x7fdfd250b708] Buffer queue overflow, dropping.
  
      Last message repeated 201 times
  
  frame=    0 fps=0.0 q=0.0 q=0.0 q=29.0 q=0.0 size=       0kB time=00:00:03.96 bitrate=   0.1kbits/s    
  
  [Parsed_overlay_7 @ 0x7fdfd250b020] [framesync @ 0x7fdfd250b708] Buffer queue overflow, dropping.
  
      Last message repeated 251 times
  
  frame=    0 fps=0.0 q=0.0 q=0.0 q=29.0 q=0.0 size=       0kB time=00:00:04.40 bitrate=   0.1kbits/s    
  
  [Parsed_overlay_7 @ 0x7fdfd250b020] [framesync @ 0x7fdfd250b708] Buffer queue overflow, dropping.
  
      Last message repeated 246 times
  
  frame=    0 fps=0.0 q=0.0 q=0.0 q=29.0 q=0.0 size=       0kB time=00:00:04.80 bitrate=   0.1kbits/s    
  
  [Parsed_overlay_7 @ 0x7fdfd250b020] [framesync @ 0x7fdfd250b708] Buffer queue overflow, dropping.
  
      Last message repeated 257 times
  
  frame=    0 fps=0.0 q=0.0 q=0.0 q=29.0 q=0.0 size=       0kB time=00:00:05.23 bitrate=   0.1kbits/s    
  
  [Parsed_overlay_7 @ 0x7fdfd250b020] [framesync @ 0x7fdfd250b708] Buffer queue overflow, dropping.
  
      Last message repeated 258 times
  
  frame=    0 fps=0.0 q=0.0 q=0.0 q=29.0 q=0.0 size=       0kB time=00:00:05.66 bitrate=   0.1kbits/s    
  
  [Parsed_overlay_7 @ 0x7fdfd250b020] [framesync @ 0x7fdfd250b708] Buffer queue overflow, dropping.
  
      Last message repeated 251 times
  
  frame=    0 fps=0.0 q=0.0 q=0.0 q=29.0 q=0.0 size=       0kB time=00:00:06.10 bitrate=   0.1kbits/s    
  
  [Parsed_overlay_7 @ 0x7fdfd250b020] [framesync @ 0x7fdfd250b708] Buffer queue overflow, dropping.
  
      Last message repeated 274 times
  
  frame=    0 fps=0.0 q=0.0 q=0.0 q=29.0 q=0.0 size=       0kB time=00:00:06.56 bitrate=   0.1kbits/s    
  
  [Parsed_overlay_7 @ 0x7fdfd250b020] [framesync @ 0x7fdfd250b708] Buffer queue overflow, dropping.
  
      Last message repeated 282 times
  
  frame=    0 fps=0.0 q=0.0 q=0.0 q=29.0 q=0.0 size=       0kB time=00:00:07.03 bitrate=   0.1kbits/s    
  
  [Parsed_overlay_7 @ 0x7fdfd250b020] [framesync @ 0x7fdfd250b708] Buffer queue overflow, dropping.
  
      Last message repeated 185 times
  
  frame=    0 fps=0.0 q=0.0 q=0.0 q=29.0 q=0.0 size=       0kB time=00:00:07.26 bitrate=   0.1kbits/s    
  
  frame=    0 fps=0.0 q=0.0 q=0.0 q=29.0 q=0.0 size=       0kB time=00:00:07.26 bitrate=   0.1kbits/s    
  
  frame=    0 fps=0.0 q=0.0 q=0.0 q=29.0 q=0.0 size=       0kB time=00:00:07.26 bitrate=   0.1kbits/s    
  
  frame=    0 fps=0.0 q=0.0 q=0.0 q=29.0 q=0.0 size=       0kB time=00:00:07.26 bitrate=   0.1kbits/s    
  
  frame=    0 fps=0.0 q=0.0 q=0.0 q=29.0 q=0.0 size=       0kB time=00:00:07.26 bitrate=   0.1kbits/s    
  
  frame=    0 fps=0.0 q=0.0 q=0.0 q=29.0 q=0.0 size=       0kB time=00:00:07.26 bitrate=   0.1kbits/s    
  
  frame=    0 fps=0.0 q=0.0 q=29.0 q=29.0 q=29.0 size=       0kB time=00:00:07.26 bitrate=   0.1kbits/s    
  
  frame=    0 fps=0.0 q=0.0 q=29.0 q=29.0 q=29.0 size=       0kB time=00:00:07.26 bitrate=   0.1kbits/s    
  
  frame=    0 fps=0.0 q=0.0 q=29.0 q=29.0 q=29.0 size=       0kB time=00:00:07.26 bitrate=   0.1kbits/s    
  
  frame=    0 fps=0.0 q=0.0 q=29.0 q=29.0 q=29.0 size=       0kB time=00:00:07.26 bitrate=   0.1kbits/s    
  
  frame=    0 fps=0.0 q=0.0 q=29.0 q=29.0 q=29.0 size=       0kB time=00:00:07.26 bitrate=   0.1kbits/s    
  
  […]   
  
  frame=    0 fps=0.0 q=0.0 q=29.0 q=29.0 q=29.0 size=       0kB time=00:00:07.26 bitrate=   0.1kbits/s    
  
  [Parsed_overlay_7 @ 0x7fdfd250b020] [framesync @ 0x7fdfd250b708] Sync level 1
  
  No more output streams to write to, finishing.
  
  frame=    0 fps=0.0 q=0.0 Lq=-1.0 q=-1.0 q=-1.0 size=       0kB time=00:00:08.93 bitrate=   0.2kbits/s    
  
  video:620kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
  
  Input file #0 (./dataset_test/videos/jz_10_huron_barstow.mkv):
  
    Input stream #0:0 (video): 43323 packets read (347030822 bytes); 43323 frames decoded; 
  
    Input stream #0:1 (audio): 4 packets read (3072 bytes); 
  
    Total: 43327 packets (347033894 bytes) demuxed
  
  Output file #0 (./out/jz_10_huron_barstow/F/0_F.mp4):
  
    Output stream #0:0 (video): 0 frames encoded; 0 packets muxed (0 bytes); 
  
    Total: 0 packets (0 bytes) muxed
  
  Output file #1 (./out/jz_10_huron_barstow/F/1_F.mp4):
  
    Output stream #1:0 (video): 270 frames encoded; 270 packets muxed (309743 bytes); 
  
    Total: 270 packets (309743 bytes) muxed
  
  Output file #2 (./out/jz_10_huron_barstow/L/0_L.mp4):
  
    Output stream #2:0 (video): 270 frames encoded; 270 packets muxed (169687 bytes); 
  
    Total: 270 packets (169687 bytes) muxed
  
  Output file #3 (./out/jz_10_huron_barstow/L/1_L.mp4):
  
    Output stream #3:0 (video): 270 frames encoded; 270 packets muxed (155502 bytes); 
  
    Total: 270 packets (155502 bytes) muxed
  
  [libx264 @ 0x7fdfd400f600] frame I:2     Avg QP:25.08  size:  3204
  
  [libx264 @ 0x7fdfd400f600] frame P:140   Avg QP:26.63  size:  1426
  
  [libx264 @ 0x7fdfd400f600] frame B:128   Avg QP:28.64  size:   805
  
  [libx264 @ 0x7fdfd400f600] consecutive B-frames:  5.2% 94.8%  0.0%  0.0%
  
  [libx264 @ 0x7fdfd400f600] mb I  I16..4:  8.6% 62.7% 28.7%
  
  [libx264 @ 0x7fdfd400f600] mb P  I16..4:  2.5% 12.5%  3.4%  P16..4: 39.2% 21.4%  9.3%  0.0%  0.0%    skip:11.6%
  
  [libx264 @ 0x7fdfd400f600] mb B  I16..4:  0.5%  4.0%  1.0%  B16..8: 36.5% 16.7%  4.0%  direct: 5.5%  skip:31.8%  L0:43.4% L1:46.9% BI: 9.7%
  
  [libx264 @ 0x7fdfd400f600] 8x8 transform intra:68.6% inter:67.7%
  
  [libx264 @ 0x7fdfd400f600] coded y,uvDC,uvAC intra: 63.1% 48.6% 17.9% inter: 34.5% 21.1% 3.6%
  
  [libx264 @ 0x7fdfd400f600] i16 v,h,dc,p: 24% 23% 12% 41%
  
  [libx264 @ 0x7fdfd400f600] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 17% 19% 26%  7%  5%  5%  7%  6%  8%
  
  [libx264 @ 0x7fdfd400f600] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 22% 29% 18%  6%  6%  5%  5%  4%  5%
  
  [libx264 @ 0x7fdfd400f600] i8c dc,h,v,p: 63% 21% 14%  3%
  
  [libx264 @ 0x7fdfd400f600] Weighted P-Frames: Y:14.3% UV:1.4%
  
  [libx264 @ 0x7fdfd400f600] ref P L0: 49.2% 20.4% 17.3% 11.2%  1.9%
  
  [libx264 @ 0x7fdfd400f600] ref B L0: 75.4% 24.6%
  
  [libx264 @ 0x7fdfd400f600] kb/s:274.71
  
  [libx264 @ 0x7fdfd4018e00] frame I:2     Avg QP:23.87  size:  2294
  
  [libx264 @ 0x7fdfd4018e00] frame P:133   Avg QP:25.45  size:   864
  
  [libx264 @ 0x7fdfd4018e00] frame B:135   Avg QP:28.99  size:   367
  
  [libx264 @ 0x7fdfd4018e00] consecutive B-frames: 17.4% 38.5% 27.8% 16.3%
  
  [libx264 @ 0x7fdfd4018e00] mb I  I16..4: 14.5% 54.1% 31.4%
  
  [libx264 @ 0x7fdfd4018e00] mb P  I16..4:  6.4%  9.6%  2.1%  P16..4: 33.3% 16.7%  5.9%  0.0%  0.0%    skip:26.0%
  
  [libx264 @ 0x7fdfd4018e00] mb B  I16..4:  1.6%  2.0%  0.3%  B16..8: 29.6%  9.3%  1.4%  direct: 2.2%  skip:53.6%  L0:41.9% L1:51.4% BI: 6.7%
  
  [libx264 @ 0x7fdfd4018e00] 8x8 transform intra:52.8% inter:73.8%
  
  [libx264 @ 0x7fdfd4018e00] coded y,uvDC,uvAC intra: 40.7% 41.7% 8.9% inter: 20.7% 16.6% 0.2%
  
  [libx264 @ 0x7fdfd4018e00] i16 v,h,dc,p: 22% 50%  8% 21%
  
  [libx264 @ 0x7fdfd4018e00] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 18% 30% 23%  6%  2%  2%  5%  5%  9%
  
  [libx264 @ 0x7fdfd4018e00] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 29% 29% 14%  5%  3%  4%  5%  6%  5%
  
  [libx264 @ 0x7fdfd4018e00] i8c dc,h,v,p: 62% 23% 12%  3%
  
  [libx264 @ 0x7fdfd4018e00] Weighted P-Frames: Y:1.5% UV:0.8%
  
  [libx264 @ 0x7fdfd4018e00] ref P L0: 56.1% 15.8% 17.7% 10.2%  0.1%
  
  [libx264 @ 0x7fdfd4018e00] ref B L0: 75.4% 20.8%  3.9%
  
  [libx264 @ 0x7fdfd4018e00] ref B L1: 92.6%  7.4%
  
  [libx264 @ 0x7fdfd4018e00] kb/s:150.22
  
  [libx264 @ 0x7fdfd4022600] frame I:2     Avg QP:23.86  size:  2208
  
  [libx264 @ 0x7fdfd4022600] frame P:139   Avg QP:24.90  size:   784
  
  [libx264 @ 0x7fdfd4022600] frame B:129   Avg QP:28.25  size:   322
  
  [libx264 @ 0x7fdfd4022600] consecutive B-frames: 17.8% 50.4% 15.6% 16.3%
  
  [libx264 @ 0x7fdfd4022600] mb I  I16..4: 15.7% 53.3% 31.1%
  
  [libx264 @ 0x7fdfd4022600] mb P  I16..4:  8.3%  9.9%  1.5%  P16..4: 33.8% 14.8%  5.0%  0.0%  0.0%    skip:26.7%
  
  [libx264 @ 0x7fdfd4022600] mb B  I16..4:  1.6%  1.8%  0.1%  B16..8: 28.8%  8.2%  1.1%  direct: 2.1%  skip:56.4%  L0:45.5% L1:47.6% BI: 6.9%
  
  [libx264 @ 0x7fdfd4022600] 8x8 transform intra:50.6% inter:75.8%
  
  [libx264 @ 0x7fdfd4022600] coded y,uvDC,uvAC intra: 34.0% 44.3% 10.0% inter: 18.8% 17.9% 0.4%
  
  [libx264 @ 0x7fdfd4022600] i16 v,h,dc,p: 18% 54%  8% 20%
  
  [libx264 @ 0x7fdfd4022600] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 19% 28% 26%  6%  2%  2%  4%  5%  8%
  
  [libx264 @ 0x7fdfd4022600] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 32% 31% 14%  4%  2%  2%  3%  7%  5%
  
  [libx264 @ 0x7fdfd4022600] i8c dc,h,v,p: 60% 25% 13%  2%
  
  [libx264 @ 0x7fdfd4022600] Weighted P-Frames: Y:2.2% UV:0.7%
  
  [libx264 @ 0x7fdfd4022600] ref P L0: 57.9% 16.8% 16.1%  8.9%  0.2%
  
  [libx264 @ 0x7fdfd4022600] ref B L0: 76.5% 21.0%  2.5%
  
  [libx264 @ 0x7fdfd4022600] ref B L1: 95.0%  5.0%
  
  [libx264 @ 0x7fdfd4022600] kb/s:137.61