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• ffmpeg concat command of many files loses quality or makes result video to stall

  28 avril 2016, par edotom

  I have a Project that intends to have the union of several images and several videos converted to mp4 output.
  Source images come from a Windows App that converted bmps to jpgs. Those images were converted to mp4 using the following command :

  ffmpeg -report  -framerate 1/7 -i source.jpg -c:v libx264 -r 30 -pix_fmt yuv420p  destination.mp4

  Result video can be seen without problems.

  Source videos come from a vms in mkv format and are converted into mp4 using the following :

  ffmpeg -i source.mkv -vcodec copy -acodec copy destination.mp4

  As a result I have a series for different mp4 files that are copied to a txt file which will allow us to make a concatenation into a result mp4.

  The contents of txt will be something like this (jpgs should be placed alternately to videos) :

  file '1_VideoMkvto.mp4'
  
  file '2_VideoMkvto.mp4'
  
  file '3_BmptoJpg.mp4'
  
  file '4_VideoMkvto.mp4'
  
  file '5_BmptoJpg.mp4'
  
  file '7_VideoMkvto.mp4'
  
  file '8_JpgtoMp4.mp4'
  
  ....

  I use the following instruction :

    ffmpeg -report -f concat -i allVideos.txt -c copy results.mp4

  The issue that I’m experiencing is that in joined video, videos created originally from images (they were originally bmps converted to jpg) show problems like not being shown, shown for more or less time than original video or even worse... they make video player to stall when their part is played or closed without warning.

  Pd. I tried to concat all videos into one single file and all jpgs-mp4 into one single file and individually they can be seen easily, but when joined together, that’s when everything starts to fail.

  Raw jpg :

  "D:\\ffmpeg\\bin\\ffmpeg.exe" -loop 1 -i "D:\\Project2\\files
  
  \\12278\\PRU_SONOMETRO.jpg" -c:v libx264 -t 5 -y -vf "fps=7,format=yuv420p" "D:\
  
  \Project2\\files\\12278\\Video\\PRU_SONOMETRO.mp4"
  
  ffmpeg version N-76456-g6df2c94 Copyright (c) 2000-2015 the FFmpeg developers
  
  built with gcc 5.2.0 (GCC)
  
  configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-av
  
  isynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enab
  
  le-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --
  
  enable-libdcadec --enable-libfreetype --enable-libgme --enable-libgsm --enable-l
  
  ibilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enab
  
  le-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --en
  
  able-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --ena
  
  ble-libtwolame --enable-libvidstab --enable-libvo-aacenc --enable-libvo-amrwbenc
  
  --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enabl
  
  e-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-lzma --ena
  
  ble-decklink --enable-zlib
  
  libavutil      55.  5.100 / 55.  5.100
  
  libavcodec     57. 14.100 / 57. 14.100
  
  libavformat    57. 14.100 / 57. 14.100
  
  libavdevice    57.  0.100 / 57.  0.100
  
  libavfilter     6. 14.101 /  6. 14.101
  
  libswscale      4.  0.100 /  4.  0.100
  
  libswresample   2.  0.100 /  2.  0.100
  
  libpostproc    54.  0.100 / 54.  0.100
  
  [mjpeg @ 008e3300] ignoring invalid SAR: 0/0
  
  Input #0, image2, from 'D:\\Project2\\files\\12278\\PRU_SONOMETRO
  
  .jpg':
  
  Duration: 00:00:00.04, start: 0.000000, bitrate: 31662 kb/s
  
      Stream #0:0: Video: mjpeg, yuvj420p(pc, bt470bg/unknown/unknown), 1920x1080,
  
  25 fps, 25 tbr, 25 tbn, 25 tbc
  
  [swscaler @ 00931d20] deprecated pixel format used, make sure you did set range
  
  correctly
  
  [libx264 @ 00900de0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX
  
  [libx264 @ 00900de0] profile High, level 4.0
  
  [libx264 @ 00900de0] 264 - core 148 r2638 7599210 - H.264/MPEG-4 AVC codec - Cop
  
  yleft 2003-2015 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deb
  
  lock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 m
  
  e_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chro
  
  ma_qp_offset=-2 threads=6 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 i
  
  nterlaced=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=7 scenecu
  
  t=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 'D:\\Project2\\files\\12278\\Video\\PRU_SONOME
  
  TRO.mp4':
  
  Metadata:
  
      encoder         : Lavf57.14.100
  
      Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 1920x1
  
  080, q=-1--1, 7 fps, 14336 tbn, 7 tbc
  
      Metadata:
  
      encoder         : Lavc57.14.100 libx264
  
  Stream mapping:
  
  Stream #0:0 -> #0:0 (mjpeg (native) -> h264 (libx264))
  
  Press [q] to stop, [?] for help
  
  [mjpeg @ 008e5700] ignoring invalid SAR: 0/0
  
      Last message repeated 18 times
  
  [mjpeg @ 008e5700] ignoring invalid SAR: 0/0me=00:00:00.00 bitrate=N/A
  
      Last message repeated 18 times
  
  [mjpeg @ 008e5700] ignoring invalid SAR: 0/0me=00:00:00.00 bitrate=N/A
  
      Last message repeated 18 times
  
  [mjpeg @ 008e5700] ignoring invalid SAR: 0/0me=00:00:00.00 bitrate=N/A
  
      Last message repeated 17 times
  
  [mjpeg @ 008e5700] ignoring invalid SAR: 0/0me=00:00:00.00 bitrate=N/A
  
      Last message repeated 17 times
  
  [mjpeg @ 008e5700] ignoring invalid SAR: 0/0me=00:00:00.00 bitrate=N/A
  
      Last message repeated 17 times
  
  [mjpeg @ 008e5700] ignoring invalid SAR: 0/0me=00:00:00.00 bitrate=N/A
  
      Last message repeated 16 times
  
  frame=   35 fps=6.1 q=-1.0 Lsize=     212kB time=00:00:04.71 bitrate= 368.6kbits
  
  /s
  
  video:211kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing o
  
  verhead: 0.582017%
  
  [libx264 @ 00900de0] frame I:1     Avg QP:10.59  size:211484
  
  [libx264 @ 00900de0] frame P:9     Avg QP:19.90  size:   194
  
  [libx264 @ 00900de0] frame B:25    Avg QP:30.36  size:    82
  
  [libx264 @ 00900de0] consecutive B-frames:  2.9%  5.7%  0.0% 91.4%
  
  [libx264 @ 00900de0] mb I  I16..4:  1.4% 95.8%  2.8%
  
  [libx264 @ 00900de0] mb P  I16..4:  0.0%  0.0%  0.0%  P16..4:  0.5%  0.0%  0.0%
  
  0.0%  0.0%    skip:99.5%
  
  [libx264 @ 00900de0] mb B  I16..4:  0.0%  0.0%  0.0%  B16..8:  0.3%  0.0%  0.0%
  
  direct: 0.0%  skip:99.7%  L0:42.3% L1:57.7% BI: 0.0%
  
  [libx264 @ 00900de0] 8x8 transform intra:95.8% inter:73.4%
  
  [libx264 @ 00900de0] coded y,uvDC,uvAC intra: 92.7% 31.6% 11.8% inter: 0.0% 0.1%
  
  0.0%
  
  [libx264 @ 00900de0] i16 v,h,dc,p: 10% 51% 37%  2%
  
  [libx264 @ 00900de0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 13% 15% 54%  3%  2%  2%  3%
  
  3%  4%
  
  [libx264 @ 00900de0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 30% 30% 20%  3%  3%  3%  2%
  
  3%  5%
  
  [libx264 @ 00900de0] i8c dc,h,v,p: 56% 23% 20%  1%
  
  [libx264 @ 00900de0] Weighted P-Frames: Y:0.0% UV:0.0%
  
  [libx264 @ 00900de0] ref P L0: 94.3%  0.0%  2.7%  3.1%
  
  [libx264 @ 00900de0] ref B L0: 83.1% 15.0%  2.0%
  
  [libx264 @ 00900de0] ref B L1: 88.4% 11.6%
  
  [libx264 @ 00900de0] kb/s:344.46

  mkv converted to mp4 :

  D:\>"D:\\ffmpeg\\bin\\ffmpeg.exe" -i "D:\\Project2\\files\\12278\
  
  \46_REGISTROSALIDA1.mkv" -c:v copy -c:a libfdk_aac -b:a 128k "D:\\Project2\\CDA\
  
  \SicovCDA\\files\\12278\\video\\46_REGISTROSALIDA1.mp4"
  
  ffmpeg version N-76456-g6df2c94 Copyright (c) 2000-2015 the FFmpeg developers
  
  built with gcc 5.2.0 (GCC)
  
  configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-av
  
  isynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enab
  
  le-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --
  
  enable-libdcadec --enable-libfreetype --enable-libgme --enable-libgsm --enable-l
  
  ibilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enab
  
  le-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --en
  
  able-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --ena
  
  ble-libtwolame --enable-libvidstab --enable-libvo-aacenc --enable-libvo-amrwbenc
  
  --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enabl
  
  e-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-lzma --ena
  
  ble-decklink --enable-zlib
  
  libavutil      55.  5.100 / 55.  5.100
  
  libavcodec     57. 14.100 / 57. 14.100
  
  libavformat    57. 14.100 / 57. 14.100
  
  libavdevice    57.  0.100 / 57.  0.100
  
  libavfilter     6. 14.101 /  6. 14.101
  
  libswscale      4.  0.100 /  4.  0.100
  
  libswresample   2.  0.100 /  2.  0.100
  
  libpostproc    54.  0.100 / 54.  0.100
  
  [matroska,webm @ 02fa0d40] Could not find codec parameters for stream 1 (Video:
  
  mjpeg, none(bt470bg/unknown/unknown), 1920x1080): unspecified pixel format
  
  Consider increasing the value for the 'analyzeduration' and 'probesize' options
  
  Input #0, matroska,webm, from 'D:\\Project2\\files\\12278\\46_REG
  
  ISTROSALIDA1.mkv':
  
  Metadata:
  
      encoder         : MilestoneMux
  
  Duration: 00:03:17.97, start: 0.000000, bitrate: 994 kb/s
  
      Stream #0:0(eng): Video: h264 (Main), yuvj420p(pc, bt709), 1920x1080 [SAR 1:
  
  1 DAR 16:9], 30 fps, 30 tbr, 1k tbn, 2k tbc (default)
  
      Stream #0:1(eng): Video: mjpeg, none(bt470bg/unknown/unknown), 1920x1080, SA
  
  R 1:1 DAR 16:9, 1k tbr, 1k tbn, 1k tbc (default)
  
  Codec AVOption b (set bitrate (in bits/s)) specified for output file #0 (D:\\Pro
  
  ject2\\files\\12278\\video\\46_REGISTROSALIDA1.mp4) has not been
  
  used for any stream. The most likely reason is either wrong type (e.g. a video o
  
  ption with no video streams) or that it is a private option of some encoder whic
  
  h was not actually used for any stream.
  
  File 'D:\\Project2\\files\\12278\\video\\46_REGISTROSALIDA1.mp4'
  
  already exists. Overwrite ? [y/N] y
  
  [mp4 @ 05d02580] Codec for stream 0 does not use global headers but container fo
  
  rmat requires global headers
  
  Output #0, mp4, to 'D:\\Project2\\files\\12278\\video\\46_REGISTR
  
  OSALIDA1.mp4':
  
  Metadata:
  
      encoder         : Lavf57.14.100
  
      Stream #0:0(eng): Video: h264 ([33][0][0][0] / 0x0021), yuvj420p, 1920x1080
  
  [SAR 1:1 DAR 16:9], q=2-31, 30 fps, 30 tbr, 16k tbn, 1k tbc (default)
  
  Stream mapping:
  
  Stream #0:0 -> #0:0 (copy)
  
  Press [q] to stop, [?] for help
  
  frame= 5940 fps=0.0 q=-1.0 Lsize=   24016kB time=00:03:17.97 bitrate= 993.8kbits
  
  /s
  
  video:23960kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing
  
  overhead: 0.234450%

  jpg(originally bmp) to mp4 :

      "D:\\ffmpeg\\bin\\ffmpeg.exe" -loop 1 -i "D:\\Project2\\files
  
  \\12278\\Sensorial.jpg" -c:v libx264 -t 5 -y -vf "fps=7,format=yuv420p" "D
  
  :\\Project2\\files\\12278\\Video\\Sensorial.mp4"
  
  ffmpeg version N-76456-g6df2c94 Copyright (c) 2000-2015 the FFmpeg developers
  
  built with gcc 5.2.0 (GCC)
  
  configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-av
  
  isynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enab
  
  le-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --
  
  enable-libdcadec --enable-libfreetype --enable-libgme --enable-libgsm --enable-l
  
  ibilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enab
  
  le-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --en
  
  able-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --ena
  
  ble-libtwolame --enable-libvidstab --enable-libvo-aacenc --enable-libvo-amrwbenc
  
  --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enabl
  
  e-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-lzma --ena
  
  ble-decklink --enable-zlib
  
  libavutil      55.  5.100 / 55.  5.100
  
  libavcodec     57. 14.100 / 57. 14.100
  
  libavformat    57. 14.100 / 57. 14.100
  
  libavdevice    57.  0.100 / 57.  0.100
  
  libavfilter     6. 14.101 /  6. 14.101
  
  libswscale      4.  0.100 /  4.  0.100
  
  libswresample   2.  0.100 /  2.  0.100
  
  libpostproc    54.  0.100 / 54.  0.100
  
  Input #0, image2, from 'D:\\Project2\\files\\12278\\39_BmpSensori
  
  al.jpg':
  
  Duration: 00:00:00.04, start: 0.000000, bitrate: 25444 kb/s
  
      Stream #0:0: Video: mjpeg, yuvj420p(pc, bt470bg/unknown/unknown), 1920x1080
  
  [SAR 96:96 DAR 16:9], 25 fps, 25 tbr, 25 tbn, 25 tbc
  
  [swscaler @ 058663a0] deprecated pixel format used, make sure you did set range
  
  correctly
  
  [libx264 @ 00df0020] using SAR=1/1
  
  [libx264 @ 00df0020] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX
  
  [libx264 @ 00df0020] profile High, level 4.0
  
  [libx264 @ 00df0020] 264 - core 148 r2638 7599210 - H.264/MPEG-4 AVC codec - Cop
  
  yleft 2003-2015 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deb
  
  lock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 m
  
  e_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chro
  
  ma_qp_offset=-2 threads=6 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 i
  
  nterlaced=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=7 scenecu
  
  t=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 'D:\\Project2\\files\\12278\\Video\\39_BmpSens
  
  orial.mp4':
  
  Metadata:
  
      encoder         : Lavf57.14.100
  
      Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 1920x1
  
  080 [SAR 1:1 DAR 16:9], q=-1--1, 7 fps, 14336 tbn, 7 tbc
  
      Metadata:
  
      encoder         : Lavc57.14.100 libx264
  
  Stream mapping:
  
  Stream #0:0 -> #0:0 (mjpeg (native) -> h264 (libx264))
  
  Press [q] to stop, [?] for help
  
  frame=   35 fps= 11 q=-1.0 Lsize=      83kB time=00:00:04.71 bitrate= 144.7kbits
  
  /s
  
  video:82kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing ov
  
  erhead: 1.497583%
  
  [libx264 @ 00df0020] frame I:1     Avg QP:13.49  size: 80298
  
  [libx264 @ 00df0020] frame P:9     Avg QP: 9.09  size:   127
  
  [libx264 @ 00df0020] frame B:25    Avg QP: 8.68  size:    75
  
  [libx264 @ 00df0020] consecutive B-frames:  2.9%  5.7%  0.0% 91.4%
  
  [libx264 @ 00df0020] mb I  I16..4: 51.4% 39.7%  8.8%
  
  [libx264 @ 00df0020] 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 @ 00df0020] mb B  I16..4:  0.0%  0.0%  0.0%  B16..8:  0.1%  0.0%  0.0%
  
  direct: 0.0%  skip:99.9%  L0:44.9% L1:55.1% BI: 0.0%
  
  [libx264 @ 00df0020] 8x8 transform intra:39.7% inter:17.3%
  
  [libx264 @ 00df0020] coded y,uvDC,uvAC intra: 7.1% 9.4% 8.8% inter: 0.0% 0.0% 0.
  
  0%
  
  [libx264 @ 00df0020] i16 v,h,dc,p: 79% 18%  3%  0%
  
  [libx264 @ 00df0020] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 57% 36%  6%  0%  0%  0%  0%
  
  0%  0%
  
  [libx264 @ 00df0020] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 29% 28% 13%  3%  5%  6%  6%
  
  4%  6%
  
  [libx264 @ 00df0020] i8c dc,h,v,p: 83% 12%  4%  1%
  
  [libx264 @ 00df0020] Weighted P-Frames: Y:0.0% UV:0.0%
  
  [libx264 @ 00df0020] ref P L0: 88.9%  1.7%  2.7%  6.8%
  
  [libx264 @ 00df0020] ref B L0:  4.2% 95.8%
  
  [libx264 @ 00df0020] ref B L1: 98.3%  1.7%
  
  [libx264 @ 00df0020] kb/s:133.30

  final trimmed concat output :

      ffmpeg started on 2016-04-27 at 16:06:45
  
  Report written to "ffmpeg-20160427-160645.log"
  
  Command line:
  
  "D:\\ffmpeg\\bin\\ffmpeg.exe" -report -f concat -i "D:\\Project2\\files\\12297\\control.txt" -c copy "D:\\Project2\\files\\12297\\12297resultado.mp4"
  
  ffmpeg version N-76456-g6df2c94 Copyright (c) 2000-2015 the FFmpeg developers
  
    built with gcc 5.2.0 (GCC)
  
    configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libdcadec --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-lzma --enable-decklink --enable-zlib
  
    libavutil      55.  5.100 / 55.  5.100
  
    libavcodec     57. 14.100 / 57. 14.100
  
    libavformat    57. 14.100 / 57. 14.100
  
    libavdevice    57.  0.100 / 57.  0.100
  
    libavfilter     6. 14.101 /  6. 14.101
  
    libswscale      4.  0.100 /  4.  0.100
  
    libswresample   2.  0.100 /  2.  0.100
  
    libpostproc    54.  0.100 / 54.  0.100
  
  Splitting the commandline.
  
  Reading option '-report' ... matched as option 'report' (generate a report) with argument '1'.
  
  Reading option '-f' ... matched as option 'f' (force format) with argument 'concat'.
  
  Reading option '-i' ... matched as input file with argument 'D:\Project2\files\12297\control.txt'.
  
  Reading option '-c' ... matched as option 'c' (codec name) with argument 'copy'.
  
  Reading option 'D:\Project2\files\12297\12297resultado.mp4' ... matched as output file.
  
  Finished splitting the commandline.
  
  Parsing a group of options: global .
  
  Applying option report (generate a report) with argument 1.
  
  Successfully parsed a group of options.
  
  Parsing a group of options: input file D:\Project2\files\12297\control.txt.
  
  Applying option f (force format) with argument concat.
  
  Successfully parsed a group of options.
  
  Opening an input file: D:\Project2\files\12297\control.txt.
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 00adb460] Format mov,mp4,m4a,3gp,3g2,mj2 probed with size=2048 and score=100
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 00adb460] ISO: File Type Major Brand: isom
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 00adb460] rfps: 7.000000 0.000016
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 00adb460] rfps: 7.000000 0.000016
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 00adb460] rfps: 14.000000 0.000063
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 00adb460] rfps: 14.000000 0.000063
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 00adb460] rfps: 21.000000 0.000143
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 00adb460] rfps: 21.000000 0.000143
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 00adb460] rfps: 28.000000 0.000253
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 00adb460] rfps: 28.000000 0.000253
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 00adb460] Before avformat_find_stream_info() pos: 7702749 bytes read:39314 seeks:1
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 00adb460] All info found
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 00adb460] After avformat_find_stream_info() pos: 71010 bytes read:110276 seeks:2 frames:1
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 00adb460] Auto-inserting h264_mp4toannexb bitstream filter
  
  [concat @ 00ad1a00] Before avformat_find_stream_info() pos: 2586 bytes read:2586 seeks:0
  
  
  
  ---comment > file 0 of type mkv converted to mp4
  
  
  
  
  
  [concat @ 00ad1a00] file:0 stream:0 pts:0 pts_time:0 dts:0 dts_time:0 -> pts:0 pts_time:0 dts:0 dts_time:0
  
  [concat @ 00ad1a00] All info found
  
  [concat @ 00ad1a00] After avformat_find_stream_info() pos: 2586 bytes read:2586 seeks:0 frames:1
  
  Input #0, concat, from 'D:\Project2\files\12297\control.txt':
  
    Duration: N/A, start: 0.000000, bitrate: 509 kb/s
  
      Stream #0:0(eng), 1, 1/16000: Video: h264 (Main) (avc1 / 0x31637661), yuvj420p(pc, bt709), 1920x1080 [SAR 1:1 DAR 16:9], 509 kb/s, 7.01 fps, 7 tbr, 16k tbn, 32k tbc
  
      Metadata:
  
        handler_name    : VideoHandler
  
  Successfully opened the file.
  
  Parsing a group of options: output file D:\Project2\files\12297\12297resultado.mp4.
  
  Applying option c (codec name) with argument copy.
  
  Successfully parsed a group of options.
  
  Opening an output file: D:\Project2\files\12297\12297resultado.mp4.
  
  Successfully opened the file.
  
  [mp4 @ 00ae7780] Codec for stream 0 does not use global headers but container format requires global headers
  
  Output #0, mp4, to 'D:\Project2\files\12297\12297resultado.mp4':
  
    Metadata:
  
      encoder         : Lavf57.14.100
  
      Stream #0:0(eng), 0, 1/16000: Video: h264 ([33][0][0][0] / 0x0021), yuvj420p, 1920x1080 [SAR 1:1 DAR 16:9], q=2-31, 509 kb/s, 7.01 fps, 7 tbr, 16k tbn, 16k tbc
  
      Metadata:
  
        handler_name    : VideoHandler
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (copy)
  
  Press [q] to stop, [?] for help
  
  [concat @ 00ad1a00] file:0 stream:0 pts:2288 pts_time:0.143 dts:2288 dts_time:0.143 -> pts:2288 pts_time:0.143 dts:2288 dts_time:0.143
  
  [concat @ 00ad1a00] file:0 stream:0 pts:1929280 pts_time:120.58 dts:1929280 dts_time:120.58 -> pts:1929280 pts_time:120.58 dts:1929280 dts_time:120.58
  
  [concat @ 00ad1a00] file:0 stream:0 pts:1931568 pts_time:120.723 dts:1931568 dts_time:120.723 -> pts:1931568 pts_time:120.723 dts:1931568 dts_time:120.723
  
  [concat @ 00ad1a00] file:0 stream:0 pts:1933856 pts_time:120.866 dts:1933856 dts_time:120.866 -> pts:1933856 pts_time:120.866 dts:1933856 dts_time:120.866
  
  
  
  
  
  ----comment > file 2 of type bmp to jpg converted to mp4
  
  
  
  [AVIOContext @ 00adbca0] Statistics: 2574258 bytes read, 2 seeks
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 00adb460] Format mov,mp4,m4a,3gp,3g2,mj2 probed with size=2048 and score=100
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 00adb460] ISO: File Type Major Brand: isom
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 00adb460] Before avformat_find_stream_info() pos: 94491 bytes read:35717 seeks:1
  
  [h264 @ 00b73c20] user data:"x264 - core 148 r2638 7599210 - 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"
  
  [h264 @ 00b73c20] no picture 
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 00adb460] All info found
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 00adb460] After avformat_find_stream_info() pos: 73972 bytes read:109641 seeks:2 frames:1
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 00adb460] Auto-inserting h264_mp4toannexb bitstream filter
  
  [concat @ 00ad1a00] file:2 stream:0 pts:0 pts_time:0 dts:-1024 dts_time:-0.0666667 -> pts:2808269 pts_time:182.83 dts:2807245 dts_time:182.763
  
  [mp4 @ 00ae7780] Non-monotonous DTS in output stream 0:0; previous: 2925280, current: 2807245; changing to 2925281. This may result in incorrect timestamps in the output file.
  
  [concat @ 00ad1a00] file:2 stream:0 pts:2048 pts_time:0.133333 dts:-512 dts_time:-0.0333333 -> pts:2810317 pts_time:182.963 dts:2807757 dts_time:182.797
  
  [mp4 @ 00ae7780] Non-monotonous DTS in output stream 0:0; previous: 2925281, current: 2807757; changing to 2925282. This may result in incorrect timestamps in the output file.
  
  [concat @ 00ad1a00] file:2 stream:0 pts:1024 pts_time:0.0666667 dts:0 dts_time:0 -> pts:2809293 pts_time:182.897 dts:2808269 dts_time:182.83
  
  [mp4 @ 00ae7780] Non-monotonous DTS in output stream 0:0; previous: 2925282, current: 2808269; changing to 2925283. This may result in incorrect timestamps in the output file.
  
  
  
  
  
  ----comment > file 6 of type jpg converted to mp4
  
  
  
  [AVIOContext @ 00adbca0] Statistics: 347409 bytes read, 2 seeks
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 00ae8f40] Format mov,mp4,m4a,3gp,3g2,mj2 probed with size=2048 and score=100
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 00ae8f40] ISO: File Type Major Brand: isom
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 00ae8f40] Before avformat_find_stream_info() pos: 164080 bytes read:36076 seeks:1
  
  [h264 @ 04240060] user data:"x264 - core 148 r2638 7599210 - 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"
  
  [h264 @ 04240060] no picture 
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 00ae8f40] All info found
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 00ae8f40] After avformat_find_stream_info() pos: 144712 bytes read:180740 seeks:2 frames:1
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 00ae8f40] Auto-inserting h264_mp4toannexb bitstream filter
  
  [concat @ 00ad1a00] file:6 stream:0 pts:0 pts_time:0 dts:-1024 dts_time:-0.0666667 -> pts:5495132 pts_time:357.756 dts:5494108 dts_time:357.689
  
  [mp4 @ 00ae7780] Non-monotonous DTS in output stream 0:0; previous: 5724096, current: 5494108; changing to 5724097. This may result in incorrect timestamps in the output file.
  
  [concat @ 00ad1a00] file:6 stream:0 pts:2048 pts_time:0.133333 dts:-512 dts_time:-0.0333333 -> pts:5497180 pts_time:357.889 dts:5494620 dts_time:357.723
  
  [mp4 @ 00ae7780] Non-monotonous DTS in output stream 0:0; previous: 5724097, current: 5494620; changing to 5724098. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 00ae7780] Non-monotonous DTS in output stream 0:0; previous: 5724304, current: 5600604; changing to 5724305. This may result in incorrect timestamps in the output file.
  
  [concat @ 00ad1a00] file:6 stream:0 pts:107008 pts_time:6.96667 dts:105984 dts_time:6.9 -> pts:5602140 pts_time:364.723 dts:5601116 dts_time:364.656
  
  [mp4 @ 00ae7780] Non-monotonous DTS in output stream 0:0; previous: 5724305, current: 5601116; changing to 5724306. This may result in incorrect timestamps in the output file.
  
  
  
  
  
  --- comment  end of process after 39 streams
  
  
  
  No more output streams to write to, finishing.
  
  frame=40348 fps=4628 q=-1.0 Lsize=  166581kB time=00:38:21.91 bitrate= 592.8kbits/s    
  
  video:166231kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.210593%
  
  Input file #0 (D:\Project2\files\12297\control.txt):
  
    Input stream #0:0 (video): 40348 packets read (170220039 bytes); 
  
    Total: 40348 packets (170220039 bytes) demuxed
  
  Output file #0 (D:\Project2\files\12297\12297resultado.mp4):
  
    Output stream #0:0 (video): 40348 packets muxed (170220039 bytes); 
  
    Total: 40348 packets (170220039 bytes) muxed
  
  0 frames successfully decoded, 0 decoding errors
  
  [AVIOContext @ 00ae85e0] Statistics: 34 seeks, 42736 writeouts
  
  [AVIOContext @ 00af0ca0] Statistics: 3921256 bytes read, 0 seeks
  
  [AVIOContext @ 00ac0d80] Statistics: 2586 bytes read, 0 seeks

• Why calling libav* library doesn't have same quality as ffmpeg command line ?

  10 mai 2016, par seaguest

  I am using the ffmpeg 3 to do the video format conversion, it works fine when I use the command line mode, but when I call the libav* library, I get a audio quality loss problem (there is a lot of noises in the audio).

  Here are the two files :

  mv.webm - original file
  mv2.mp4 converted with libarary , a lot of noises

  Here is the probe information for the mv.webm :

  $ ffprobe mv.webm
  
  ffprobe version N-79826-g64fd62d Copyright (c) 2007-2016 the FFmpeg developers
  
    built with gcc 5.3.1 (Ubuntu 5.3.1-14ubuntu2) 20160413
  
    configuration: --prefix=/home/seaguest/ffmpeg_build --pkg-config-flags=--static --extra-cflags=-I/home/seaguest/ffmpeg_build/include --extra-ldflags=-L/home/seaguest/ffmpeg_build/lib --enable-gpl --enable-libfdk-aac --enable-libx264 --enable-libx265 --enable-nonfree
  
    libavutil      55. 24.100 / 55. 24.100
  
    libavcodec     57. 39.100 / 57. 39.100
  
    libavformat    57. 36.100 / 57. 36.100
  
    libavdevice    57.  0.101 / 57.  0.101
  
    libavfilter     6. 45.100 /  6. 45.100
  
    libswscale      4.  1.100 /  4.  1.100
  
    libswresample   2.  0.101 /  2.  0.101
  
    libpostproc    54.  0.100 / 54.  0.100
  
  Input #0, matroska,webm, from 'mv.webm':
  
    Metadata:
  
      encoder         : Lavf57.36.100
  
    Duration: 00:00:30.00, start: 0.000000, bitrate: 935 kb/s
  
      Stream #0:0: Video: vp8, yuv420p, 640x480, SAR 1:1 DAR 4:3, 25 fps, 25 tbr, 1k tbn (default)
  
      Stream #0:1: Audio: vorbis, 44100 Hz, stereo, fltp (default)

  I checked the log printed by command line mode and calling code mode, the setting looks like the same, here are the logs :

  $ ffmpeg -i mv.webm -c:a aac -c:v libx264  mv.mp4
  
  ffmpeg version N-79826-g64fd62d Copyright (c) 2000-2016 the FFmpeg developers
  
    built with gcc 5.3.1 (Ubuntu 5.3.1-14ubuntu2) 20160413
  
    configuration: --prefix=/home/seaguest/ffmpeg_build --pkg-config-flags=--static --extra-cflags=-I/home/seaguest/ffmpeg_build/include --extra-ldflags=-L/home/seaguest/ffmpeg_build/lib --enable-gpl --enable-libfdk-aac --enable-libx264 --enable-libx265 --enable-nonfree
  
    libavutil      55. 24.100 / 55. 24.100
  
    libavcodec     57. 39.100 / 57. 39.100
  
    libavformat    57. 36.100 / 57. 36.100
  
    libavdevice    57.  0.101 / 57.  0.101
  
    libavfilter     6. 45.100 /  6. 45.100
  
    libswscale      4.  1.100 /  4.  1.100
  
    libswresample   2.  0.101 /  2.  0.101
  
    libpostproc    54.  0.100 / 54.  0.100
  
  Input #0, matroska,webm, from 'mv.webm':
  
    Metadata:
  
      encoder         : Lavf57.36.100
  
    Duration: 00:00:30.00, start: 0.000000, bitrate: 935 kb/s
  
      Stream #0:0: Video: vp8, yuv420p, 640x480, SAR 1:1 DAR 4:3, 25 fps, 25 tbr, 1k tbn (default)
  
      Stream #0:1: Audio: vorbis, 44100 Hz, stereo, fltp (default)
  
  [libx264 @ 0x3e5d880] using SAR=1/1
  
  [libx264 @ 0x3e5d880] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 AVX2 LZCNT BMI2
  
  [libx264 @ 0x3e5d880] profile High, level 3.0
  
  [libx264 @ 0x3e5d880] 264 - core 148 r2643 5c65704 - 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
  
  [mp4 @ 0x3e2f680] Using AVStream.codec to pass codec parameters to muxers is deprecated, use AVStream.codecpar instead.
  
      Last message repeated 1 times
  
  Output #0, mp4, to 'mv.mp4':
  
    Metadata:
  
      encoder         : Lavf57.36.100
  
      Stream #0:0: Video: h264 ([33][0][0][0] / 0x0021), yuv420p, 640x480 [SAR 1:1 DAR 4:3], q=2-31, 25 fps, 12800 tbn (default)
  
      Metadata:
  
        encoder         : Lavc57.39.100 libx264
  
      Side data:
  
        cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
  
      Stream #0:1: Audio: aac (LC) ([64][0][0][0] / 0x0040), 44100 Hz, stereo, fltp, 128 kb/s (default)
  
      Metadata:
  
        encoder         : Lavc57.39.100 aac
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (vp8 (native) -> h264 (libx264))
  
    Stream #0:1 -> #0:1 (vorbis (native) -> aac (native))
  
  Press [q] to stop, [?] for help
  
  frame=  750 fps=229 q=-1.0 Lsize=    2508kB time=00:00:30.02 bitrate= 684.5kbits/s speed=9.17x
  
  video:2023kB audio:459kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 1.052857%
  
  [libx264 @ 0x3e5d880] frame I:11    Avg QP:15.29  size: 20395
  
  [libx264 @ 0x3e5d880] frame P:345   Avg QP:20.93  size:  4350
  
  [libx264 @ 0x3e5d880] frame B:394   Avg QP:23.55  size:   879
  
  [libx264 @ 0x3e5d880] consecutive B-frames: 25.2%  3.2% 33.2% 38.4%
  
  [libx264 @ 0x3e5d880] mb I  I16..4: 44.1% 32.5% 23.4%
  
  [libx264 @ 0x3e5d880] mb P  I16..4:  1.5%  3.6%  0.6%  P16..4: 28.9% 11.2%  4.7%  0.0%  0.0%    skip:49.5%
  
  [libx264 @ 0x3e5d880] mb B  I16..4:  0.0%  0.1%  0.0%  B16..8: 27.4%  2.0%  0.4%  direct: 0.8%  skip:69.3%  L0:40.0% L1:53.3% BI: 6.7%
  
  [libx264 @ 0x3e5d880] 8x8 transform intra:52.6% inter:74.9%
  
  [libx264 @ 0x3e5d880] coded y,uvDC,uvAC intra: 57.5% 68.6% 35.9% inter: 10.6% 11.9% 2.6%
  
  [libx264 @ 0x3e5d880] i16 v,h,dc,p: 36% 42%  7% 15%
  
  [libx264 @ 0x3e5d880] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 15% 23% 15% 6%  7%  7% 10%  7% 10%
  
  [libx264 @ 0x3e5d880] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 20% 27% 14% 6%  8%  7%  7%  6%  6%
  
  [libx264 @ 0x3e5d880] i8c dc,h,v,p: 46% 34% 11%  9%
  
  [libx264 @ 0x3e5d880] Weighted P-Frames: Y:0.0% UV:0.0%
  
  [libx264 @ 0x3e5d880] ref P L0: 63.9% 20.8% 11.2%  4.1%
  
  [libx264 @ 0x3e5d880] ref B L0: 93.1%  6.1%  0.8%
  
  [libx264 @ 0x3e5d880] ref B L1: 95.8%  4.2%
  
  [libx264 @ 0x3e5d880] kb/s:552.32
  
  [aac @ 0x3e5ec00] Qavg: 3030.804
  
  
  
  
  
  $ ffprobe mv.mp4
  
  ffprobe version N-79826-g64fd62d Copyright (c) 2007-2016 the FFmpeg developers
  
    built with gcc 5.3.1 (Ubuntu 5.3.1-14ubuntu2) 20160413
  
    configuration: --prefix=/home/seaguest/ffmpeg_build --pkg-config-flags=--static --extra-cflags=-I/home/seaguest/ffmpeg_build/include --extra-ldflags=-L/home/seaguest/ffmpeg_build/lib --enable-gpl --enable-libfdk-aac --enable-libx264 --enable-libx265 --enable-nonfree
  
    libavutil      55. 24.100 / 55. 24.100
  
    libavcodec     57. 39.100 / 57. 39.100
  
    libavformat    57. 36.100 / 57. 36.100
  
    libavdevice    57.  0.101 / 57.  0.101
  
    libavfilter     6. 45.100 /  6. 45.100
  
    libswscale      4.  1.100 /  4.  1.100
  
    libswresample   2.  0.101 /  2.  0.101
  
    libpostproc    54.  0.100 / 54.  0.100
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'mv.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf57.36.100
  
    Duration: 00:00:30.01, start: 0.000000, bitrate: 684 kb/s
  
      Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 640x480 [SAR 1:1 DAR 4:3], 552 kb/s, 25 fps, 25 tbr, 12800 tbn (default)
  
      Metadata:
  
        handler_name    : VideoHandler
  
      Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 125 kb/s (default)
  
      Metadata:
  
        handler_name    : SoundHandler

  For the calling code mode :

  $ go run transcode.go mv.webm mv1.mp4
  
  # github.com/3d0c/gmf
  
  ../packet.go: In function ‘_cgo_3c42eeb63b1e_Cfunc_avcodec_decode_audio4’:
  
  ../packet.go:87:2: warning: ‘avcodec_decode_audio4’ is deprecated [-Wdeprecated-declarations]
  
   func (this *Packet) decode(cc *CodecCtx, frame *Frame) (*Frame, bool, int, error) {
  
    ^
  
  In file included from ../packet.go:7:0:
  
  /home/seaguest/ffmpeg_build/include/libavcodec/avcodec.h:4685:5: note: declared here
  
   int avcodec_decode_audio4(AVCodecContext *avctx, AVFrame *frame,
  
       ^
  
  ../packet.go: In function ‘_cgo_3c42eeb63b1e_Cfunc_avcodec_decode_video2’:
  
  ../packet.go:104:2: warning: ‘avcodec_decode_video2’ is deprecated [-Wdeprecated-declarations]
  
     }
  
    ^
  
  In file included from ../packet.go:7:0:
  
  /home/seaguest/ffmpeg_build/include/libavcodec/avcodec.h:4734:5: note: declared here
  
   int avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture,
  
       ^
  
  [libx264 @ 0x2d82400] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 AVX2 LZCNT BMI2
  
  [libx264 @ 0x2d82400] profile High, level 3.0
  
  [libx264 @ 0x2d82400] 264 - core 148 r2643 5c65704 - 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
  
  [mp4 @ 0x2d480c0] Using AVStream.codec.time_base as a timebase hint to the muxer is deprecated. Set AVStream.time_base instead.
  
  [mp4 @ 0x2d480c0] Using AVStream.codec to pass codec parameters to muxers is deprecated, use AVStream.codecpar instead.
  
  [mp4 @ 0x2d480c0] Using AVStream.codec.time_base as a timebase hint to the muxer is deprecated. Set AVStream.time_base instead.
  
  [mp4 @ 0x2d480c0] Using AVStream.codec to pass codec parameters to muxers is deprecated, use AVStream.codecpar instead.
  
  
  
  
  
  
  
  $ ffprobe mv1.mp4
  
  ffprobe version N-79826-g64fd62d Copyright (c) 2007-2016 the FFmpeg developers
  
    built with gcc 5.3.1 (Ubuntu 5.3.1-14ubuntu2) 20160413
  
    configuration: --prefix=/home/seaguest/ffmpeg_build --pkg-config-flags=--static --extra-cflags=-I/home/seaguest/ffmpeg_build/include --extra-ldflags=-L/home/seaguest/ffmpeg_build/lib --enable-gpl --enable-libfdk-aac --enable-libx264 --enable-libx265 --enable-nonfree
  
    libavutil      55. 24.100 / 55. 24.100
  
    libavcodec     57. 39.100 / 57. 39.100
  
    libavformat    57. 36.100 / 57. 36.100
  
    libavdevice    57.  0.101 / 57.  0.101
  
    libavfilter     6. 45.100 /  6. 45.100
  
    libswscale      4.  1.100 /  4.  1.100
  
    libswresample   2.  0.101 /  2.  0.101
  
    libpostproc    54.  0.100 / 54.  0.100
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'mv1.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf57.36.100
  
    Duration: 00:00:30.00, start: 0.000000, bitrate: 751 kb/s
  
      Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 640x480, 613 kb/s, 25 fps, 25 tbr, 12800 tbn (default)
  
      Metadata:
  
        handler_name    : VideoHandler
  
      Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 130 kb/s (default)
  
      Metadata:
  
        handler_name    : SoundHandler

  Checking the setting section, crf=23.0 for both (the rest are exactly the same), but the output bitrate are different (the audio for calling code mode has a lot of noises), how is that possible ?

  Why the command line mode and use libav* library mode with same setting, but have different output ?
  What should I do to call libav* library to get lossless video conversion ?

• Evolution #3778 : [sécurité - inscription] : éviter l’envoi de mot de passe en clair par email et ...

  20 mai 2016, par Guillaume Fahrner

  super ! merci erational !

  pour mémoire :

  [20/05/2016 11:04] tu crois qu’on peut hasher le mdp coté client en javascript sans que ce soit une usine a gaz ?
  [20/05/2016 11:04] mmh aucune idée… :(
  [20/05/2016 11:04] faudrait intégrer le sel dans le formulaire envoyé, comme pour le login...

  à faire et à intégrer un jour dans le core ? :-)