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• FFMpeg batch convert video files hangs

  13 juin 2017, par Benson Chang

  I have some .avi file contains video encoded in h264, and I would like to change to .mp4 and change the rates if needed. You can see the code used to convert below. My problem is that ffmpeg will hang when I try to convert all files, and the file it hangs changes from time to time, I wonder why ? Below the code is the output where ffmpeg hangs. I’m running under windows 10, python 2.7.

  import subprocess
  
  import os
  
  
  
  def convert(fileName):
  
      sourceFile = fileName
  
      print sourceFile.split('.')
  
      targetFile = fileName.split('.')[0] + ".mp4"
  
      subprocess.call(['ffmpeg', '-y', '-i', sourceFile, '-r',
  
           '30000/1001', '-b:a', '2M', '-bt', '4M', '-vcodec',
  
            'libx264', '-pass', '1', '-coder', '0', '-bf', '0',
  
             '-flags', '-loop', '-wpredp', '0', '-an', targetFile])
  
  
  
  
  
  
  
  # Set the directory you want to start from
  
  def convertBatch(rootDir = '.'):
  
      for dirName, subdirList, fileList in os.walk(rootDir):
  
          print('Found directory: %s' % dirName)
  
  
  
          for fname in fileList:
  
              if fname.endswith(".avi"):
  
                  convert('%s/%s' % (dirName,fname))
  
                  #os.remove('%s/%s' % (dirName,fname))
  
  
  
  
  
  convertBatch("F:\\data\\mp4")

  ---

  ffmpeg version 3.1.4 Copyright (c) 2000-2016 the FFmpeg developers
  
    built with gcc 5.4.0 (GCC)
  
    configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-dxva2 --enable-libmfx --enable-nvenc --enable-avisynth --enable-bzlib --enable-libebur128 --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264 --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzimg --enable-lzma --enable-decklink --enable-zlib
  
    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
  
    libswscale      4.  1.100 /  4.  1.100
  
    libswresample   2.  1.100 /  2.  1.100
  
    libpostproc    54.  0.100 / 54.  0.100
  
  Input #0, avi, from 'filename.avi':
  
    Metadata:
  
      encoder         : Lavf57.56.100
  
    Duration: 00:00:01.00, start: 0.000000, bitrate: 611 kb/s
  
      Stream #0:0: Video: h264 (Constrained Baseline) (x264 / 0x34363278), yuv420p, 1024x1024, 578 kb/s, 30 fps, 30 tbr, 30 tbn, 60 tbc
  
  Codec AVOption b (set bitrate (in bits/s)) specified for output file #0 (F:\data\mp4_1_16\11\14\512/11_14_512_16.mp4) has not been used for any stream. The most likely reason is either wrong type (e.g. a video option with no video streams) or that it is a private option of some encoder which was not actually used for any stream.
  
  [libx264 @ 00000000028e42c0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 AVX2 LZCNT BMI2
  
  [libx264 @ 00000000028e42c0] profile Constrained Baseline, level 3.2
  
  [libx264 @ 00000000028e42c0] 264 - core 148 r2721 72d53ab - H.264/MPEG-4 AVC codec - Copyleft 2003-2016 - http://www.videolan.org/x264.html - options: cabac=0 ref=1 deblock=1:0:0 analyse=0x1:0 me=dia subme=2 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=18 lookahead_threads=6 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=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 @ 0000000002bd00a0] Using AVStream.codec to pass codec parameters to muxers is deprecated, use AVStream.codecpar instead.
  
  Output #0, mp4, to 'filename.mp4':
  
    Metadata:
  
      encoder         : Lavf57.41.100
  
      Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 1024x1024, q=-1--1, 29.97 fps, 30k tbn, 29.97 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 (h264 (native) -> h264 (libx264))
  
  Press [q] to stop, [?] for help

• Dropped frames in ffmpeg when adding an overlay

  31 janvier 2016, par Juanan

  I’m trying to add a white overlay box using ffmpeg to an mp4 file downloaded from YouTube. I know the syntax and it is working OK with small videos, but I’m struggling to get it to work in a longer one. This is the exact command :

  ffmpeg -i intro.mp4 -strict -2 -vf "color=white:200x50 [over]; [in][over] overlay=250:320:enable=between(t\,0\,52) [out]" out.mp4

  Initially, it works like a charm :

  $ ffmpeg -i intro.mp4 -preset slow -strict -2 -vf "color=white:200x50 [over]; [in][over] overlay=250:320:enable=between(t\,0\,52) [out]" -t 60 out.mp4
  
  ffmpeg version 2.5.3 Copyright (c) 2000-2015 the FFmpeg developers
  
    built on Mar 26 2015 23:00:53 with Apple LLVM version 5.1 (clang-503.0.40) (based on LLVM 3.4svn)
  
    configuration: --prefix=/opt/local --enable-swscale --enable-avfilter --enable-avresample --enable-libmp3lame --enable-libvorbis --enable-libopus --enable-libtheora --enable-libschroedinger --enable-libopenjpeg --enable-libmodplug --enable-libvpx --enable-libspeex --enable-libass --enable-libbluray --enable-lzma --enable-gnutls --enable-fontconfig --enable-libfreetype --enable-libfribidi --disable-indev=jack --disable-outdev=xv --mandir=/opt/local/share/man --enable-shared --enable-pthreads --cc=/usr/bin/clang --enable-vda --arch=x86_64 --enable-yasm --enable-gpl --enable-postproc --enable-libx264 --enable-libxvid
  
    libavutil      54. 15.100 / 54. 15.100
  
    libavcodec     56. 13.100 / 56. 13.100
  
    libavformat    56. 15.102 / 56. 15.102
  
    libavdevice    56.  3.100 / 56.  3.100
  
    libavfilter     5.  2.103 /  5.  2.103
  
    libavresample   2.  1.  0 /  2.  1.  0
  
    libswscale      3.  1.101 /  3.  1.101
  
    libswresample   1.  1.100 /  1.  1.100
  
    libpostproc    53.  3.100 / 53.  3.100
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'intro.mp4':
  
    Metadata:
  
      major_brand     : mp42
  
      minor_version   : 0
  
      compatible_brands: isommp42
  
      creation_time   : 2014-01-30 16:48:50
  
    Duration: 00:13:30.70, start: 0.000000, bitrate: 692 kb/s
  
      Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1280x720, 497 kb/s, 25 fps, 25 tbr, 50 tbn, 50 tbc (default)
  
      Metadata:
  
        handler_name    : VideoHandler
  
      Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 192 kb/s (default)
  
      Metadata:
  
        creation_time   : 2014-01-30 16:48:54
  
        handler_name    : IsoMedia File Produced by Google, 5-11-2011
  
  File 'out.mp4' already exists. Overwrite ? [y/N] y
  
  [libx264 @ 0x7fa8cb82fa00] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.1 Cache64
  
  [libx264 @ 0x7fa8cb82fa00] profile High, level 3.1
  
  [libx264 @ 0x7fa8cb82fa00] 264 - core 142 - H.264/MPEG-4 AVC codec - Copyleft 2003-2014 - http://www.videolan.org/x264.html - options: cabac=1 ref=5 deblock=1:0:0 analyse=0x3:0x113 me=umh subme=8 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=3 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=2 b_bias=0 direct=3 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=50 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.mp4':
  
    Metadata:
  
      major_brand     : mp42
  
      minor_version   : 0
  
      compatible_brands: isommp42
  
      encoder         : Lavf56.15.102
  
      Stream #0:0(und): Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 1280x720, q=-1--1, 25 fps, 12800 tbn, 25 tbc (default)
  
      Metadata:
  
        handler_name    : VideoHandler
  
        encoder         : Lavc56.13.100 libx264
  
      Stream #0:1(und): Audio: aac ([64][0][0][0] / 0x0040), 44100 Hz, stereo, fltp, 128 kb/s (default)
  
      Metadata:
  
        creation_time   : 2014-01-30 16:48:54
  
        handler_name    : IsoMedia File Produced by Google, 5-11-2011
  
        encoder         : Lavc56.13.100 aac
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
  
    Stream #0:1 -> #0:1 (aac (native) -> aac (native))
  
  Press [q] to stop, [?] for help
  
  frame= 1500 fps= 47 q=-1.0 Lsize=    2518kB time=00:01:00.00 bitrate= 343.8kbits/s

  But after some time, that command starts yelling dropped frames :

  frame=20269 fps= 21 q=-1.0 Lsize=   23283kB time=00:13:30.70 bitrate= 235.3kbits/s dup=0 drop=548431

  and it never ends. Any clue ?

• FFMPEG : create movie from timestamped images

  28 mai 2017, par HyperDevil

  Im trying to make a small movie file from a folder with webcam images.

  They are named like this :
  00-00-38.jpg
  00-05-37.jpg
  00-10-37.jpg
  00-15-37.jpg

  H-M-S.jpg format

  Although i tried patterntype glob and simpler commands i cannot get it to work.

  This is what i tried :

  ffmpeg -r 1 -pattern_type glob -i '*.jpg' -scale=720:-1 -c:v libx264 out.mp4 
  
  (got only one image)
  
  ffmpeg -r 25 -i *.jpg -vf "scale=720:-1" output.mp4
  
  (same size as a jpg file but no video)

  Console output :

  ffmpeg -framerate 1 -pattern_type glob -i "*.jpg" -vf scale=720:-1 -c:v libx264 -pix_fmt yuv420p out.mp4
  
      ffmpeg version 1.0.10 Copyright (c) 2000-2014 the FFmpeg developers  built on Jul 25 2014 07:50:40 with gcc 4.7 (Debian 4.7.2-5)
  
        configuration: --prefix=/usr --extra-cflags='-g -O2 -fstack-protector --param=ssp-buffer-size=4 -Wformat -Werror=format-security ' 
  
      --extra-ldflags='-Wl,-z,relro' --cc='ccache cc' --enable-shared --enable-libmp3lame --enable-gpl --enable-nonfree --enable-libvorbis 
  
      --enable-pthreads --enable-libfaac --enable-libxvid --enable-postproc --enable-x11grab --enable-libgsm --enable-libtheora --enable-li
  
      bopencore-amrnb --enable-libopencore-amrwb --enable-libx264 --enable-libspeex --enable-nonfree --disable-stripping --enable-libvpx --
  
      enable-libschroedinger --disable-encoder=libschroedinger --enable-version3 --enable-libopenjpeg --enable-librtmp --enable-avfilter --
  
      enable-libfreetype --enable-libvo-aacenc --disable-decoder=amrnb --enable-libvo-amrwbenc --enable-libaacplus --libdir=/usr/lib/x86_64
  
      -linux-gnu --disable-vda --enable-libbluray --enable-libcdio --enable-gnutls --enable-frei0r --enable-openssl --enable-libass --enabl
  
      e-libopus --enable-fontconfig --enable-libfdk-aac --enable-libdc1394 --disable-altivec --dis
  
        libavutil      51. 73.101 / 51. 73.101
  
        libavcodec     54. 59.100 / 54. 59.100
  
        libavformat    54. 29.104 / 54. 29.104
  
        libavdevice    54.  2.101 / 54.  2.101
  
        libavfilter     3. 17.100 /  3. 17.100
  
        libswscale      2.  1.101 /  2.  1.101
  
        libswresample   0. 15.100 /  0. 15.100
  
        libpostproc    52.  0.100 / 52.  0.100
  
      [image2 @ 0x1d53f00] max_analyze_duration 5000000 reached at 5000000
  
      Input #0, image2, from '*.jpg':
  
        Duration: 00:04:48.00, start: 0.000000, bitrate: N/A
  
          Stream #0:0: Video: mjpeg, yuvj420p, 800x593 [SAR 96:96 DAR 800:593], 1 fps, 1 tbr, 1 tbn, 1 tbc
  
      [libx264 @ 0x1d35bc0] using SAR=1780/1779
  
      [libx264 @ 0x1d35bc0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX XOP FMA4 FMA3 SSEMisalign LZCNT BMI1
  
      [libx264 @ 0x1d35bc0] profile High, level 2.2
  
      [libx264 @ 0x1d35bc0] 264 - core 132 - H.264/MPEG-4 AVC codec - Copyleft 2003-2013 - http://www.videolan.org/x264.html - options:  ca
  
      bac=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 8x8dc
  
      t=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=12 lookahead_threads=2 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 key
  
      int_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=
  
      1:1.00
  
      Output #0, mp4, to 'out.mp4':
  
        Metadata:
  
          encoder         : Lavf54.29.104
  
          Stream #0:0: Video: h264 ([33][0][0][0] / 0x0021), yuv420p, 720x534 [SAR 1780:1779 DAR 800:593], q=-1--1, 1 tbn, 1 tbc
  
      Stream mapping:
  
        Stream #0:0 -> #0:0 (mjpeg -> libx264)
  
      Press [q] to stop, [?] for help
  
      frame=  288 fps=145 q=32763.0 Lsize=     349kB time=00:04:46.00 bitrate=  10.0kbits/s
  
      video:345kB audio:0kB subtitle:0 global headers:0kB muxing overhead 1.208469%
  
      [libx264 @ 0x1d35bc0] frame I:2     Avg QP: 2.80  size:130328
  
      [libx264 @ 0x1d35bc0] frame P:73    Avg QP: 4.70  size:  1167
  
      [libx264 @ 0x1d35bc0] frame B:213   Avg QP:17.33  size:    30
  
      [libx264 @ 0x1d35bc0] consecutive B-frames:  1.4%  0.0%  0.0% 98.6%
  
      [libx264 @ 0x1d35bc0] mb I  I16..4: 20.2% 24.9% 55.0%
  
      [libx264 @ 0x1d35bc0] mb P  I16..4:  0.0%  0.0%  0.0%  P16..4:  4.3%  0.1%  0.2%  0.0%  0.0%    skip:95.5%
  
      [libx264 @ 0x1d35bc0] mb B  I16..4:  0.0%  0.0%  0.0%  B16..8:  0.8%  0.0%  0.0%  direct: 0.0%  skip:99.2%  L0: 5.4% L1:94.5% BI: 0.0
  
      %
  
      [libx264 @ 0x1d35bc0] 8x8 transform intra:24.9% inter:51.5%
  
      [libx264 @ 0x1d35bc0] coded y,uvDC,uvAC intra: 99.4% 0.0% 0.0% inter: 0.6% 0.0% 0.0%
  
      [libx264 @ 0x1d35bc0] i16 v,h,dc,p:  5% 19% 52% 25%
  
      [libx264 @ 0x1d35bc0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 10% 28% 21%  4%  6%  4%  8%  5% 15%
  
      [libx264 @ 0x1d35bc0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 14% 27% 13%  6%  8%  5%  9%  6% 12%
  
      [libx264 @ 0x1d35bc0] i8c dc,h,v,p: 100%  0%  0%  0%
  
      [libx264 @ 0x1d35bc0] Weighted P-Frames: Y:0.0% UV:0.0%
  
      [libx264 @ 0x1d35bc0] ref P L0: 98.1%  0.0%  1.7%  0.2%
  
      [libx264 @ 0x1d35bc0] ref B L0: 52.0% 48.0%
  
      [libx264 @ 0x1d35bc0] ref B L1: 73.0% 27.0%
  
      [libx264 @ 0x1d35bc0] kb/s:9.78

  The video is 364KB without any video.