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• ffmpeg concat with video using image background

  16 janvier 2018, par ant-C

  Ffmpeg does not concat the media files correctly using various testing. One of the videos is a .mp4 (h264 codec) video generated previously using a .mp3 and a jpeg background. I’ve tried testing with various flags, closest I’ve gotten is below for the final output.

  My main issue is the final video with the current test, the audio is about 3 seconds delayed once the two videos are stitched together.

  Here are all the files I’m using :

  Input Files :

  • audio.mp3

  • image.jpg

  • main_video_raw.mp4

  Output Files :

  • new_image_video_raw.mp4

  • new_image_video.mp4

  • main_video.mp4

  • final_output_video.mp4

  files.txt

  file ’/tmp/new_image_video.mp4’

  file ’/tmp/main_video.mp4’
  
  

  Image Video Creation :

  ffmpeg -loop 1 -i /tmp/image.jpg -i /tmp/audio.mp3 -acodec libfdk_aac -framerate 30 -vcodec libx264 -shortest /tmp/new_image_video_raw.mp4

  Part two :

  ffmpeg -threads 0 -i /tmp/new_image_video_raw.mp4 -vf "scale=w=560:h=320:force_original_aspect_ratio=decrease, pad=560:320:(560-iw*min(560/iw\,320/ih))/2:(320-ih*min(560/iw\,320/ih))/2" -acodec libfdk_aac -af aresample=resampler=soxr -qp 20 -ar 44100 -r 30 -ab 128k -ac 1 -vcodec libx264 -max_muxing_queue_size 9999 -shortest -movflags +faststart /tmp/new_image_video.mp4 -y

  Main Video Transcode :

  ffmpeg -i /tmp/main_video_raw.mp4 -vf "scale=iw*min(560/iw\,320/ih):ih*min(560/iw\,320/ih), pad=560:320:(560-iw*min(560/iw\,320/ih))/2:(320-ih*min(560/iw\,320/ih))/2" -acodec libfdk_aac -af aresample=resampler=soxr -ar 44100 -aspect 16:9 -qp 20  -framerate 30 -ab 128k -ac 1 -vcodec libx264 -max_muxing_queue_size 9999 -movflags +faststart /tmp/main_video.mp4 -y

  Concat Video :

  ffmpeg -threads 0 -f concat -safe 0 -i /tmp/files.txt -vf "scale=iw*min(560/iw\,320/ih):ih*min(560/iw\,320/ih), pad=560:320:(560-iw*min(560/iw\,320/ih))/2:(320-ih*min(560/iw\,320/ih))/2" -preset veryslow -crf 15 -acodec libfdk_aac -af aresample=resampler=soxr -ar 44100 -aspect 16:9 -qp 20  -framerate 30 -ab 128k -ac 1 -vcodec libx264 -max_muxing_queue_size 9999 -movflags +faststart /tmp/final_output_video.mp4 -y

  Output for new_image_video.mp4

  Stream mapping:
  
    Stream #0:0 -> #0:0 (mjpeg (native) -> h264 (libx264))
  
    Stream #1:0 -> #0:1 (copy)
  
  Press [q] to stop, [?] for help
  
  [libx264 @ 0x150ce00] using SAR=1/1
  
  [libx264 @ 0x150ce00] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
  
  [libx264 @ 0x150ce00] profile High, level 2.1
  
  [libx264 @ 0x150ce00] 264 - core 152 - H.264/MPEG-4 AVC codec - Copyleft 2003-2017 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:-3:-3 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=2.00:0.70 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-4 threads=10 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=1 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=1:1.20
  
  Output #0, mp4, to '/tmp/new_image_video.mp4':
  
    Metadata:
  
      encoder         : Lavf57.76.100
  
      Stream #0:0: Video: h264 (libx264) (avc1 / 0x31637661), yuvj420p(pc), 560x320 [SAR 1:1 DAR 7:4], q=-1--1, 1 fps, 16384 tbn, 1 tbc
  
      Metadata:
  
        encoder         : Lavc57.102.100 libx264
  
      Side data:
  
        cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
  
      Stream #0:1: Audio: mp3 (mp4a / 0x6134706D), 44100 Hz, stereo, s16p, 157 kb/s
  
      Metadata:
  
        encoder         : Lavc56.41
  
  frame=   73 fps=0.0 q=17.0 Lsize=     362kB time=00:00:16.00 bitrate= 185.3kbits/s speed=88.6x
  
  video:49kB audio:308kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 1.166542%
  
  [libx264 @ 0x150ce00] frame I:1     Avg QP: 4.09  size: 38729
  
  [libx264 @ 0x150ce00] frame P:18    Avg QP: 5.77  size:   843
  
  [libx264 @ 0x150ce00] frame B:54    Avg QP: 0.64  size:    49
  
  [libx264 @ 0x150ce00] consecutive B-frames:  1.4%  0.0%  0.0% 98.6%
  
  [libx264 @ 0x150ce00] mb I  I16..4: 54.6% 18.9% 26.6%
  
  [libx264 @ 0x150ce00] mb P  I16..4:  0.0%  0.0%  0.0%  P16..4:  9.1%  0.1%  0.5%  0.0%  0.0%    skip:90.3%
  
  [libx264 @ 0x150ce00] mb B  I16..4:  0.0%  0.0%  0.0%  B16..8:  2.6%  0.0%  0.0%  direct: 0.0%  skip:97.4%  L0:69.1% L1:30.9% BI: 0.0%
  
  [libx264 @ 0x150ce00] 8x8 transform intra:18.9% inter:59.9%
  
  [libx264 @ 0x150ce00] coded y,uvDC,uvAC intra: 44.1% 45.3% 45.0% inter: 1.4% 0.0% 0.0%
  
  [libx264 @ 0x150ce00] i16 v,h,dc,p: 91%  2%  6%  1%
  
  [libx264 @ 0x150ce00] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 22% 18% 18%  8%  5%  6%  7%  9%  7%
  
  [libx264 @ 0x150ce00] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 23% 16%  8%  7% 10%  9% 10%  9%  9%
  
  [libx264 @ 0x150ce00] i8c dc,h,v,p: 71% 12% 12%  5%
  
  [libx264 @ 0x150ce00] Weighted P-Frames: Y:0.0% UV:0.0%
  
  [libx264 @ 0x150ce00] ref P L0: 79.3%  0.1% 19.5%  1.1%
  
  [libx264 @ 0x150ce00] ref B L0: 68.3% 30.5%  1.2%
  
  [libx264 @ 0x150ce00] ref B L1: 98.4%  1.6%
  
  [libx264 @ 0x150ce00] kb/s:6.20

  Output for new_image_video.mp4 (Part 2)

  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/tmp/new_image_video_raw.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf57.76.100
  
    Duration: 00:00:19.00, start: 0.000000, bitrate: 156 kb/s
  
      Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuvj420p(pc), 560x320 [SAR 1:1 DAR 7:4], 21 kb/s, 1 fps, 1 tbr, 16384 tbn, 2 tbc (default)
  
      Metadata:
  
        handler_name    : VideoHandler
  
      Stream #0:1(und): Audio: mp3 (mp4a / 0x6134706D), 44100 Hz, stereo, s16p, 157 kb/s (default)
  
      Metadata:
  
        handler_name    : SoundHandler
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
  
    Stream #0:1 -> #0:1 (mp3 (native) -> aac (libfdk_aac))
  
  Press [q] to stop, [?] for help
  
  [libx264 @ 0x2175560] using SAR=1/1
  
  [libx264 @ 0x2175560] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
  
  [libx264 @ 0x2175560] profile High, level 3.0
  
  [libx264 @ 0x2175560] 264 - core 152 - 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=10 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=cqp mbtree=0 qp=20 ip_ratio=1.40 pb_ratio=1.30 aq=0
  
  Output #0, mp4, to '/tmp/new_image_video.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf57.76.100
  
      Stream #0:0(und): Video: h264 (libx264) (avc1 / 0x31637661), yuvj420p(pc), 560x320 [SAR 1:1 DAR 7:4], q=-1--1, 30 fps, 15360 tbn, 30 tbc (default)
  
      Metadata:
  
        handler_name    : VideoHandler
  
        encoder         : Lavc57.102.100 libx264
  
      Side data:
  
        cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
  
      Stream #0:1(und): Audio: aac (libfdk_aac) (mp4a / 0x6134706D), 44100 Hz, mono, s16, 128 kb/s (default)
  
      Metadata:
  
        handler_name    : SoundHandler
  
        encoder         : Lavc57.102.100 libfdk_aac
  
  [mp4 @ 0x2150cc0] Starting second pass: moving the moov atom to the beginning of the file drop=0 speed=31.6x
  
  frame=  569 fps=0.0 q=-1.0 Lsize=     351kB time=00:00:18.86 bitrate= 152.3kbits/s dup=579 drop=0 speed=32.5x
  
  video:81kB audio:251kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 5.851973%
  
  [libx264 @ 0x2175560] frame I:3     Avg QP:17.00  size: 23393
  
  [libx264 @ 0x2175560] frame P:143   Avg QP:20.00  size:    26
  
  [libx264 @ 0x2175560] frame B:423   Avg QP:21.67  size:    19
  
  [libx264 @ 0x2175560] consecutive B-frames:  0.9%  0.0%  0.0% 99.1%
  
  [libx264 @ 0x2175560] mb I  I16..4: 54.7% 26.0% 19.4%
  
  [libx264 @ 0x2175560] mb P  I16..4:  0.0%  0.0%  0.0%  P16..4:  0.1%  0.0%  0.0%  0.0%  0.0%    skip:99.9%
  
  [libx264 @ 0x2175560] mb B  I16..4:  0.0%  0.0%  0.0%  B16..8:  0.2%  0.0%  0.0%  direct: 0.0%  skip:99.7%  L0:23.7% L1:76.3% BI: 0.0%
  
  [libx264 @ 0x2175560] 8x8 transform intra:26.0% inter:14.0%
  
  [libx264 @ 0x2175560] coded y,uvDC,uvAC intra: 39.8% 44.1% 43.4% inter: 0.0% 0.0% 0.0%
  
  [libx264 @ 0x2175560] i16 v,h,dc,p: 91%  3%  5%  1%
  
  [libx264 @ 0x2175560] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 22% 17% 15%  8%  6%  9%  6%  8%  8%
  
  [libx264 @ 0x2175560] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 20% 17%  6%  7% 10%  9% 11% 10%  9%
  
  [libx264 @ 0x2175560] i8c dc,h,v,p: 71% 11% 13%  5%
  
  [libx264 @ 0x2175560] Weighted P-Frames: Y:0.0% UV:0.0%
  
  [libx264 @ 0x2175560] ref P L0: 95.4%  0.7%  3.9%
  
  [libx264 @ 0x2175560] ref B L0: 44.6% 55.4%
  
  [libx264 @ 0x2175560] ref B L1: 98.3%  1.7%
  
  [libx264 @ 0x2175560] kb/s:34.62

  Output for main_video.mp4

  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/tmp/main_video_raw.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      creation_time   : 1970-01-01T00:00:00.000000Z
  
      encoder         : Lavf53.24.2
  
    Duration: 00:01:02.32, start: 0.000000, bitrate: 1347 kb/s
  
      Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], 959 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc (default)
  
      Metadata:
  
        creation_time   : 1970-01-01T00:00:00.000000Z
  
        handler_name    : VideoHandler
  
      Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, 5.1, fltp, 383 kb/s (default)
  
      Metadata:
  
        creation_time   : 1970-01-01T00:00:00.000000Z
  
        handler_name    : SoundHandler
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
  
    Stream #0:1 -> #0:1 (aac (native) -> aac (libfdk_aac))
  
  Press [q] to stop, [?] for help
  
  [libx264 @ 0x758900] using SAR=64/63
  
  [libx264 @ 0x758900] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
  
  [libx264 @ 0x758900] profile High, level 2.1
  
  [libx264 @ 0x758900] 264 - core 152 - 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=10 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=cqp mbtree=0 qp=20 ip_ratio=1.40 pb_ratio=1.30 aq=0
  
  Output #0, mp4, to '/tmp/main_video.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf57.76.100
  
      Stream #0:0(und): Video: h264 (libx264) (avc1 / 0x31637661), yuv420p, 560x320 [SAR 64:63 DAR 16:9], q=-1--1, 25 fps, 12800 tbn, 25 tbc (default)
  
      Metadata:
  
        creation_time   : 1970-01-01T00:00:00.000000Z
  
        handler_name    : VideoHandler
  
        encoder         : Lavc57.102.100 libx264
  
      Side data:
  
        cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
  
      Stream #0:1(und): Audio: aac (libfdk_aac) (mp4a / 0x6134706D), 44100 Hz, mono, s16, 128 kb/s (default)
  
      Metadata:
  
        creation_time   : 1970-01-01T00:00:00.000000Z
  
        handler_name    : SoundHandler
  
        encoder         : Lavc57.102.100 libfdk_aac
  
  [mp4 @ 0x755900] Starting second pass: moving the moov atom to the beginning of the file11.1x
  
  frame= 1557 fps=275 q=-1.0 Lsize=    5144kB time=00:01:02.32 bitrate= 676.1kbits/s speed=  11x
  
  video:4119kB audio:975kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.989500%
  
  [libx264 @ 0x758900] frame I:13    Avg QP:17.00  size: 34937
  
  [libx264 @ 0x758900] frame P:657   Avg QP:20.00  size:  3546
  
  [libx264 @ 0x758900] frame B:887   Avg QP:21.69  size:  1615
  
  [libx264 @ 0x758900] consecutive B-frames: 18.9% 12.6%  8.1% 60.4%
  
  [libx264 @ 0x758900] mb I  I16..4: 12.5% 51.8% 35.7%
  
  [libx264 @ 0x758900] mb P  I16..4:  0.2%  1.9%  1.0%  P16..4: 17.9%  9.3%  8.4%  0.0%  0.0%    skip:61.3%
  
  [libx264 @ 0x758900] mb B  I16..4:  0.1%  0.3%  0.3%  B16..8: 18.0%  5.6%  2.4%  direct: 2.8%  skip:70.6%  L0:33.9% L1:42.5% BI:23.6%
  
  [libx264 @ 0x758900] 8x8 transform intra:55.4% inter:56.4%
  
  [libx264 @ 0x758900] coded y,uvDC,uvAC intra: 84.0% 93.3% 75.0% inter: 12.6% 14.9% 3.3%
  
  [libx264 @ 0x758900] i16 v,h,dc,p:  8% 38%  3% 51%
  
  [libx264 @ 0x758900] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 16% 20%  8%  7%  9%  9% 10% 10% 11%
  
  [libx264 @ 0x758900] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 15% 20%  9%  8% 11% 10% 10%  9%  9%
  
  [libx264 @ 0x758900] i8c dc,h,v,p: 41% 26% 17% 16%
  
  [libx264 @ 0x758900] Weighted P-Frames: Y:0.2% UV:0.0%
  
  [libx264 @ 0x758900] ref P L0: 72.3% 14.4%  9.7%  3.6%  0.0%
  
  [libx264 @ 0x758900] ref B L0: 89.9%  7.7%  2.4%
  
  [libx264 @ 0x758900] ref B L1: 97.1%  2.9%
  
  [libx264 @ 0x758900] kb/s:541.66

  Outupt for concat :

  ffmpeg version 3.3.3 Copyright (c) 2000-2017 the FFmpeg developers
  
    built with gcc 4.4.7 (GCC) 20120313 (Red Hat 4.4.7-18)
  
    configuration: --prefix=/root/ffmpeg_build --extra-cflags=-I/root/ffmpeg_build/include --extra-ldflags='-L/root/ffmpeg_build/lib -ldl' --bindir=/root/bin --pkg-config-flags=--static --enable-gpl --enable-version3 --disable-debug --enable-shared --enable-runtime-cpudetect --enable-postproc --enable-pic --enable-libfdk_aac --enable-libfreetype --enable-libmp3lame --enable-libopus --enable-libvorbis --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libtheora --enable-libvo-amrwbenc --enable-gray --enable-libopenjpeg --enable-libass --enable-libvidstab --enable-libsoxr --enable-libvpx --enable-libx264 --enable-libx265 --enable-libxvid --enable-libwebp --enable-fontconfig --enable-libspeex --enable-nonfree
  
    libavutil      55. 73.100 / 55. 73.100
  
    libavcodec     57.102.100 / 57.102.100
  
    libavformat    57. 76.100 / 57. 76.100
  
    libavdevice    57.  7.100 / 57.  7.100
  
    libavfilter     6. 98.100 /  6. 98.100
  
    libswscale      4.  7.102 /  4.  7.102
  
    libswresample   2.  8.100 /  2.  8.100
  
    libpostproc    54.  6.100 / 54.  6.100
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/tmp/main_video.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      creation_time   : 1970-01-01T00:00:00.000000Z
  
      encoder         : Lavf53.24.2
  
    Duration: 00:01:02.32, start: 0.000000, bitrate: 1347 kb/s
  
      Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], 959 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc (default)
  
      Metadata:
  
        creation_time   : 1970-01-01T00:00:00.000000Z
  
        handler_name    : VideoHandler
  
      Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, 5.1, fltp, 383 kb/s (default)
  
      Metadata:
  
        creation_time   : 1970-01-01T00:00:00.000000Z
  
        handler_name    : SoundHandler
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
  
    Stream #0:1 -> #0:1 (aac (native) -> aac (libfdk_aac))
  
  Press [q] to stop, [?] for help
  
  [libx264 @ 0x1563900] using SAR=64/63
  
  [libx264 @ 0x1563900] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
  
  [libx264 @ 0x1563900] profile High, level 2.1
  
  [libx264 @ 0x1563900] 264 - core 152 - 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=10 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=cqp mbtree=0 qp=20 ip_ratio=1.40 pb_ratio=1.30 aq=0
  
  Output #0, mp4, to '/tmp/new_image_video.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf57.76.100
  
      Stream #0:0(und): Video: h264 (libx264) (avc1 / 0x31637661), yuv420p, 560x320 [SAR 64:63 DAR 16:9], q=-1--1, 25 fps, 12800 tbn, 25 tbc (default)
  
      Metadata:
  
        creation_time   : 1970-01-01T00:00:00.000000Z
  
        handler_name    : VideoHandler
  
        encoder         : Lavc57.102.100 libx264
  
      Side data:
  
        cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
  
      Stream #0:1(und): Audio: aac (libfdk_aac) (mp4a / 0x6134706D), 44100 Hz, mono, s16, 128 kb/s (default)
  
      Metadata:
  
        creation_time   : 1970-01-01T00:00:00.000000Z
  
        handler_name    : SoundHandler
  
        encoder         : Lavc57.102.100 libfdk_aac
  
  [mp4 @ 0x1560900] Starting second pass: moving the moov atom to the beginning of the file1.2x
  
  frame= 1557 fps=277 q=-1.0 Lsize=    5144kB time=00:01:02.32 bitrate= 676.1kbits/s speed=11.1x
  
  video:4119kB audio:975kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.989500%
  
  [libx264 @ 0x1563900] frame I:13    Avg QP:17.00  size: 34937
  
  [libx264 @ 0x1563900] frame P:657   Avg QP:20.00  size:  3546
  
  [libx264 @ 0x1563900] frame B:887   Avg QP:21.69  size:  1615
  
  [libx264 @ 0x1563900] consecutive B-frames: 18.9% 12.6%  8.1% 60.4%
  
  [libx264 @ 0x1563900] mb I  I16..4: 12.5% 51.8% 35.7%
  
  [libx264 @ 0x1563900] mb P  I16..4:  0.2%  1.9%  1.0%  P16..4: 17.9%  9.3%  8.4%  0.0%  0.0%    skip:61.3%
  
  [libx264 @ 0x1563900] mb B  I16..4:  0.1%  0.3%  0.3%  B16..8: 18.0%  5.6%  2.4%  direct: 2.8%  skip:70.6%  L0:33.9% L1:42.5% BI:23.6%
  
  [libx264 @ 0x1563900] 8x8 transform intra:55.4% inter:56.4%
  
  [libx264 @ 0x1563900] coded y,uvDC,uvAC intra: 84.0% 93.3% 75.0% inter: 12.6% 14.9% 3.3%
  
  [libx264 @ 0x1563900] i16 v,h,dc,p:  8% 38%  3% 51%
  
  [libx264 @ 0x1563900] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 16% 20%  8%  7%  9%  9% 10% 10% 11%
  
  [libx264 @ 0x1563900] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 15% 20%  9%  8% 11% 10% 10%  9%  9%
  
  [libx264 @ 0x1563900] i8c dc,h,v,p: 41% 26% 17% 16%
  
  [libx264 @ 0x1563900] Weighted P-Frames: Y:0.2% UV:0.0%
  
  [libx264 @ 0x1563900] ref P L0: 72.3% 14.4%  9.7%  3.6%  0.0%
  
  [libx264 @ 0x1563900] ref B L0: 89.9%  7.7%  2.4%
  
  [libx264 @ 0x1563900] ref B L1: 97.1%  2.9%
  
  [libx264 @ 0x1563900] kb/s:541.66

• FFMPEG MP4s are corrupt in Firefox after rotation ? [migrated]

  13 décembre 2013, par Paul

  I'm working on a website that allows uploading of generic video types, converts them to MP4s (H.264), then plays them using the HTML 5 <video></video> tag.

  I would really like to give the option to rotate videos, but when I run the rotation, the output files will not play in Firefox ("Video cannot be played because the file is corrupt"). Windows also does not automatically generate a thumbnail based on its content, like for other MP4s. The files do play fine in VLC and in Chrome, but I will need them to work in Firefox as well.

  I've tried joining the conversion and rotation into a single FFMPEG call, and I've also tried rotating before converting and vice-versa, but I still have the same problem.

  Here are what my calls look like :

  Rotation :

   ffmpeg -i <input /> -vf "transpose=1" -qscale 0 -y -acodec copy <output>
  
  </output>

  Conversion :

   ffmpeg -i <input /> -vcodec libx264 -vsync 1 -bt 50k -acodec libvo_aacenc -crf <quality> -s <width>x<height> -ar 44100 -ab 160 -ac 2 -y <output>
  
  </output></height></width></quality>

• Node.js Webm live stream server : issues with tag

  10 décembre 2013, par breathe0

  I'm using Node.js as stream server to stream realtime Webm videos that is sent by FFMPEG (executed from another application, the stream is done via HTTP) and received by a webapp that uses the tag.

  This is what I'm doing : FFMPEG streams the received frames using the following command :

  ffmpeg -r 30 -f rawvideo  -pix_fmt bgra -s 640x480 
  
  -i \\.\pipe\STREAM_PIPE -r 60 
  
  -f segment  -s 240x160 -codec:v libvpx  -f webm 
  
  http://my.domain.com/video_stream.webm

  (the stream comes from an application that uses the Kinect as source and communicates with FFMPEG through a pipe, sending one frame after another)

  When the webapp connects, it receives immediately this response from the server :

  HTTP/1.1 200 OK
  
  X-Powered-By: Express
  
  content-type: video/webm
  
  cache-control: private
  
  connection: close
  
  Date: Fri, 06 Dec 2013 14:36:31 GMT

  and a Webm header (previously stored on the server, with the same resolution and frame rate of the source stream and tested as working on VLC) is immediately appended. Then the webapp starts to receive the data streamed by FFMPEG. Here is a screenshot of Mkvinfo GUI showing the fields of the header :

  

  However, even if the Network tab of the Chrome console shows that there is an actual stream of data (meaning that what is streamed is not completely garbage, otherwise the connection would be dropped), the player doesn't display anything. We tried to manually prepend our header to the dumped video received by the webapp and VLC plays it just fine, but this is not happening with the tag.

  What can cause this problem ? Are we missing something about the encoding on the FFMPEG side or we stored wrong values on the header (or they're not enough) ?

  PS : I cannot rely on an extern stream server.

  PPS : We tried the following experiments :

  • substituting the video header with the one stored in the server makes the video playable on both vlc and video tag
  • if we dump the video that is already started (without an header) and we prepend the video header stored in the server or even its original header, the video is playable in VLC but not on the tag (we're carefully prepending the header just before the beggining of the cluster).