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• FFmpeg library (ver 5.1) multithread decode and scaler

  19 août 2022, par wolverin

  I wrote my own code that takes the video from v4l2 MJPEG and streams it to the rtsp server in H264.

  


  Everything is fine as long as the incoming and outgoing stream resolution is 640x480, but if the incoming is 1920x1080 and I do sws_scale, then decoding and scaling are very slow.

  


  If I run ffmpeg from the command line, I see swscale errors, which means that sws_getContext is called 20 times, which means a queue of 20 scaling threads is created

  


  Input #0, video4linux2,v4l2, from '/dev/video0':
  Duration: N/A, bitrate: N/A
  Stream #0:0: Video: mjpeg, none(bt470bg/unknown/unknown), 640x480, 30 fps, 30 tbr, 1000k tbn
Stream mapping:
  Stream #0:0 -> #0:0 (mjpeg (native) -> h264 (libx264))
Press [q] to stop, [?] for help
[swscaler @ 0x14b8160] [swscaler @ 0x14c18b0] deprecated pixel format used, make sure you did set range correctly
[swscaler @ 0x14b8160] [swscaler @ 0x14df9b0] deprecated pixel format used, make sure you did set range correctly
[swscaler @ 0x14b8160] [swscaler @ 0x14fd790] deprecated pixel format used, make sure you did set range correctly
[swscaler @ 0x14b8160] [swscaler @ 0x151b570] deprecated pixel format used, make sure you did set range correctly
[swscaler @ 0x14b8160] [swscaler @ 0x1539350] deprecated pixel format used, make sure you did set range correctly
[swscaler @ 0x14b8160] [swscaler @ 0x14c18b0] deprecated pixel format used, make sure you did set range correctly
[swscaler @ 0x14b8160] [swscaler @ 0x14db1a0] deprecated pixel format used, make sure you did set range correctly
[swscaler @ 0x14b8160] [swscaler @ 0x14f8f80] deprecated pixel format used, make sure you did set range correctly
[swscaler @ 0x14b8160] [swscaler @ 0x1516d60] deprecated pixel format used, make sure you did set range correctly
[swscaler @ 0x14b8160] [swscaler @ 0x15396f0] deprecated pixel format used, make sure you did set range correctly
[swscaler @ 0x14b8160] [swscaler @ 0x152d3d0] deprecated pixel format used, make sure you did set range correctly
[swscaler @ 0x14b8160] [swscaler @ 0x14c2060] deprecated pixel format used, make sure you did set range correctly
[swscaler @ 0x14b8160] [swscaler @ 0x14dfe40] deprecated pixel format used, make sure you did set range correctly
[swscaler @ 0x14b8160] [swscaler @ 0x14fdc20] deprecated pixel format used, make sure you did set range correctly
[swscaler @ 0x14b8160] [swscaler @ 0x151ba00] deprecated pixel format used, make sure you did set range correctly
[swscaler @ 0x14b8160] [swscaler @ 0x152d3d0] deprecated pixel format used, make sure you did set range correctly
[swscaler @ 0x14b8160] [swscaler @ 0x14c2060] deprecated pixel format used, make sure you did set range correctly
[swscaler @ 0x14b8160] [swscaler @ 0x14dfe40] deprecated pixel format used, make sure you did set range correctly
[swscaler @ 0x14b8160] [swscaler @ 0x14fdc20] deprecated pixel format used, make sure you did set range correctly
[swscaler @ 0x14b8160] [swscaler @ 0x151ba00] deprecated pixel format used, make sure you did set range correctly
[libx264 @ 0x14a0950] using cpu capabilities: ARMv6 NEON
[libx264 @ 0x14a0950] profile High 4:2:2, level 3.0, 4:2:2 8-bit
[libx264 @ 0x14a0950] 264 - core 148 r2643 5c65704 - H.264/MPEG-4 AVC codec - Copyleft 2003-2015 - http://www.videolan.org/x264.html - options: cabac=0 ref=1 deblock=0:0:0 analyse=0:0 me=dia subme=0 psy=1 psy_rd=1.00:0.00 mixed_ref=0 me_range=16 chroma_me=1 trellis=0 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=0 threads=6 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=0 weightp=0 keyint=250 keyint_min=25 scenecut=0 intra_refresh=0 rc_lookahead=0 rc=cbr mbtree=0 bitrate=500 ratetol=1.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 vbv_maxrate=500 vbv_bufsize=1000 nal_hrd=none filler=0 ip_ratio=1.40 aq=0
Output #0, rtsp, to 'rtsp://localhost:554/cam':
  Metadata:
    encoder         : Lavf59.25.100
  Stream #0:0: Video: h264, yuv422p(tv, bt470bg/unknown/unknown, progressive), 640x480, q=2-31, 500 kb/s, 30 fps, 90k tbn
    Metadata:
      encoder         : Lavc59.33.100 libx264
    Side data:
      cpb: bitrate max/min/avg: 500000/0/500000 buffer size: 1000000 vbv_delay: N/A


  


  1. How to create a multithreading ffmpeg for sws_scale ?

  


  2. Does internal multithreading work for mjpeg decoding, for example in AVCodecContext ? If not, what is the best way to create multithreading for decoding ?

  


• 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

• .mov conversion to .mp4 using ffmpeg doesn't convert the entire video

  5 février 2013, par user504879

  I am trying to convert a mov file which I got from saving my powerpoint presentation to a movie file. However only a part of the presentation is converted not the entire one and also running qt-start doesn't make the exported mp4 to stream over rtmp. Is there something which I am missing ?

  I am attaching the output which i get when I am trying to convert the file using ffmpeg

  $ export LD_LIBRARY_PATH=/usr/local/lib; /usr/local/bin/ffmpeg -y -i /data/tmp/vialogues_prez.mov -r 20 -g 40 -acodec libfaac -ar 44100  -ab 96k -vcodec libx264 -s 640x480 -vpre medium /data/videos/vialogues_prez.mp4
  
  
  
  FFmpeg version 0.6.1, Copyright (c) 2000-2010 the FFmpeg developers
  
    built on Feb 19 2011 19:03:56 with gcc 4.4.5
  
    configuration: --enable-gpl --enable-version3 --enable-nonfree --enable-postproc --enable-libfaac --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxvid --enable-x11grab
  
    libavutil     50.15. 1 / 50.15. 1
  
    libavcodec    52.72. 2 / 52.72. 2
  
    libavformat   52.64. 2 / 52.64. 2
  
    libavdevice   52. 2. 0 / 52. 2. 0
  
    libswscale     0.11. 0 /  0.11. 0
  
    libpostproc   51. 2. 0 / 51. 2. 0
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 0x186f460]max_analyze_duration reached
  
  
  
  Seems stream 0 codec frame rate differs from container frame rate: 600.00 (600/1) -> 0.08 (1/12)
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/data/tmp/vialogues_prez.mov':
  
    Metadata:
  
      major_brand     : qt  
  
      minor_version   : 537199360
  
      compatible_brands: qt  
  
      comment         : Microsoft PowerPoint Movie
  
      comment-eng     : Microsoft PowerPoint Movie
  
    Duration: 00:04:47.00, start: 0.000000, bitrate: 22 kb/s
  
      Stream #0.0(eng): Video: qtrle, bgra, 640x480, 21 kb/s, 0.01 fps, 0.08 tbr, 600 tbn, 600 tbc
  
      Stream #0.1(eng): Video: 0x0000, 600 tbr, 600 tbn, 600 tbc
  
      Stream #0.2(eng): Video: 0x0000, 600 tbr, 600 tbn, 600 tbc
  
  [libx264 @ 0x1873b50]using cpu capabilities: MMX2 SSE2Fast SSSE3 FastShuffle SSE4.1 Cache64
  
  [libx264 @ 0x1873b50]profile High, level 3.0
  
  [libx264 @ 0x1873b50]264 - core 114 - H.264/MPEG-4 AVC codec - Copyleft 2003-2011 - 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=1 sliced_threads=0 nr=0 decimate=1 interlaced=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=abr mbtree=1 bitrate=200 ratetol=20.0 qcomp=0.60 qpmin=10 qpmax=51 qpstep=4 ip_ratio=1.41 aq=1:1.00
  
  Output #0, mp4, to '/data/videos/vialogues_prez.mp4':
  
    Metadata:
  
      encoder         : Lavf52.64.2
  
      Stream #0.0(eng): Video: libx264, yuv420p, 640x480, q=10-51, 200 kb/s, 20 tbn, 20 tbc
  
  Stream mapping:
  
    Stream #0.0 -> #0.0
  
  Press [q] to stop encoding
  
  frame=    4 fps=  0 q=32766.0 Lsize=      50kB time=45.05 bitrate=   9.0kbits/s    
  
  video:49kB audio:0kB global headers:0kB muxing overhead 1.740573%
  
  [libx264 @ 0x1873b50]frame I:1     Avg QP:32.73  size:  8427
  
  [libx264 @ 0x1873b50]frame P:3     Avg QP:20.68  size: 13640
  
  [libx264 @ 0x1873b50]mb I  I16..4: 60.8% 14.6% 24.7%
  
  [libx264 @ 0x1873b50]mb P  I16..4: 28.7%  7.2% 15.4%  P16..4:  2.0%  1.3%  1.4%  0.0%  0.0%    skip:43.9%
  
  [libx264 @ 0x1873b50]final ratefactor: -16.67
  
  [libx264 @ 0x1873b50]8x8 transform intra:14.2% inter:5.0%
  
  [libx264 @ 0x1873b50]coded y,uvDC,uvAC intra: 25.2% 18.4% 13.0% inter: 5.3% 7.4% 7.2%
  
  [libx264 @ 0x1873b50]i16 v,h,dc,p: 63% 34%  1%  2%
  
  [libx264 @ 0x1873b50]i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 19% 41% 31%  1%  1%  1%  1%  1%  4%
  
  [libx264 @ 0x1873b50]i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 29% 33% 19%  2%  3%  3%  4%  3%  4%
  
  [libx264 @ 0x1873b50]i8c dc,h,v,p: 75% 20%  4%  1%
  
  [libx264 @ 0x1873b50]Weighted P-Frames: Y:0.0% UV:0.0%
  
  [libx264 @ 0x1873b50]ref P L0: 57.0% 12.2% 26.2%  4.7%
  
  [libx264 @ 0x1873b50]kb/s:1.14

  any help is appreciated.