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• ffmpeg converts anything to mp4

  23 septembre 2015, par KevinOelen

  I’m trying to get familiar with python subprocess and here is my little code :

  import subprocess
  
  import os
  
  import re
  
  import subprocess as sp
  
  import logging
  
  
  
  the_file = "/home/vagrant/test/out.pkg"
  
  out_file = "/home/vagrant/test/result.mp4"
  
  
  
  ffmpeg = sp.Popen(['/usr/bin/ffmpeg', '-i', the_file, out_file], stdout = sp.PIPE, stderr = sp.STDOUT)
  
  process_output =  ffmpeg.communicate()
  
  print "communicate:", process_output

  The result :

  communicate: ("ffmpeg version N-75410-g58fe57d Copyright (c) 2000-2015 the FFmpeg developers\n  built with gcc 4.4.7 (GCC) 20120313 (Red Hat 4.4.7-16)\n  configuration: --prefix=/home/vagrant/ffmpeg_build --extra-cflags=-I/home/vagrant/ffmpeg_build/include --extra-ldflags=-L/home/vagrant/ffmpeg_build/lib --bindir=/usr/local/bin --enable-gpl --enable-nonfree --enable-libfdk_aac --enable-libmp3lame --enable-libvorbis --enable-libopus --enable-libvpx --enable-libx264 --enable-libfreetype\n  libavutil      55.  2.100 / 55.  2.100\n  libavcodec     57.  3.100 / 57.  3.100\n  libavformat    57.  2.100 / 57.  2.100\n  libavdevice    57.  0.100 / 57.  0.100\n  libavfilter     6.  5.100 /  6.  5.100\n  libswscale      4.  0.100 /  4.  0.100\n  libswresample   2.  0.100 /  2.  0.100\n  libpostproc    54.  0.100 / 54.  0.100\nInput #0, tty, from '/home/vagrant/test/out.txt':\n  Duration: 00:00:00.04, bitrate: 1 kb/s\n    Stream #0:0: Video: ansi, pal8, 640x400, 25 fps, 25 tbr, 25 tbn, 25 tbc\nNo pixel format specified, yuv444p for H.264 encoding chosen.\nUse -pix_fmt yuv420p for compatibility with outdated media players.\n[libx264 @ 0x379f300] using cpu capabilities: MMX2 SSE2Fast SSSE3 Cache64\n[libx264 @ 0x379f300] profile High 4:4:4 Predictive, level 3.0, 4:4:4 8-bit\n[libx264 @ 0x379f300] 264 - core 148 r2597 e86f3a1 - 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=4 threads=1 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\nOutput #0, mp4, to '/home/vagrant/test/result.mp4':\n  Metadata:\n    encoder         : Lavf57.2.100\n    Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv444p, 640x400, q=-1--1, 25 fps, 12800 tbn, 25 tbc\n    Metadata:\n      encoder         : Lavc57.3.100 libx264\nStream mapping:\n  Stream #0:0 -> #0:0 (ansi (native) -> h264 (libx264))\nPress [q] to stop, [?] for help\nframe=    1 fps=0.0 q=28.0 Lsize=       2kB time=00:00:00.04 bitrate= 362.4kbits/s    \nvideo:1kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 78.698227%\n[libx264 @ 0x379f300] frame I:1     Avg QP:13.08  size:   326\n[libx264 @ 0x379f300] mb I  I16..4:  0.4% 99.1%  0.5%\n[libx264 @ 0x379f300] 8x8 transform intra:99.1%\n[libx264 @ 0x379f300] coded y,u,v intra: 0.4% 0.0% 0.0%\n[libx264 @ 0x379f300] i16 v,h,dc,p:  0% 75% 25%  0%\n[libx264 @ 0x379f300] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu:  0% 92%  8%  0%  0%  0%  0%  0%  0%\n[libx264 @ 0x379f300] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 24% 35% 35%  2%  1%  0%  2%  0%  0%\n[libx264 @ 0x379f300] kb/s:65.20\n", None)

  As it expected, sends me back a tuple (stdout,stderr). But the problem is, ffmpeg converts any file(as you can see above, even pkg file) without giving me back an error or exit status with 1. stderr = None

  Can anyone explain what’s wrong on this one ? Thanks so much.

• Pipe breaks when piping gif to ffmpeg

  20 avril 2015, par forwardslash

  I’ve been trying to pipe gifs to ffmpeg to turn them into mp4s but I keep getting I/O errors from the pipe when I try.

  Something like

  cat nyan.gif | ffmpeg -f gif -i - -pix_fmt yuv420p -y nyan.mp4

  Outputs

  fmpeg version 2.6.2 Copyright (c) 2000-2015 the FFmpeg developers
  
    built with Apple LLVM version 6.0 (clang-600.0.54) (based on LLVM 3.5svn)
  
    configuration: --prefix=/usr/local/Cellar/ffmpeg/2.6.2 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-libx264 --enable-libmp3lame --enable-libvo-aacenc --enable-libxvid --enable-openssl --enable-libwebp --enable-nonfree --enable-vda
  
    libavutil      54. 20.100 / 54. 20.100
  
    libavcodec     56. 26.100 / 56. 26.100
  
    libavformat    56. 25.101 / 56. 25.101
  
    libavdevice    56.  4.100 / 56.  4.100
  
    libavfilter     5. 11.102 /  5. 11.102
  
    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, gif, from 'pipe:0':
  
    Duration: N/A, bitrate: N/A
  
      Stream #0:0: Video: gif, bgra, 752x420, 100 tbr, 100 tbn, 100 tbc
  
  [libx264 @ 0x7f9b3a012e00] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 AVX2 LZCNT BMI2
  
  [libx264 @ 0x7f9b3a012e00] profile High, level 3.2
  
  [libx264 @ 0x7f9b3a012e00] 264 - core 144 r2533 c8a773e - H.264/MPEG-4 AVC codec - Copyleft 2003-2015 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=6 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
  
  Output #0, mp4, to 'nyan3.mp4':
  
    Metadata:
  
      encoder         : Lavf56.25.101
  
      Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 752x420, q=-1--1, 100 fps, 12800 tbn, 100 tbc
  
      Metadata:
  
        encoder         : Lavc56.26.100 libx264
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (gif (native) -> h264 (libx264))
  
  pipe:0: Input/output error
  
  frame=   20 fps=0.0 q=-1.0 Lsize=      21kB time=00:00:00.18 bitrate= 974.0kbits/s dup=17 drop=0
  
  video:20kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 5.163643%
  
  [libx264 @ 0x7f9b3a012e00] frame I:1     Avg QP:20.83  size: 10238
  
  [libx264 @ 0x7f9b3a012e00] frame P:6     Avg QP:21.55  size:  1484
  
  [libx264 @ 0x7f9b3a012e00] frame B:13    Avg QP:17.85  size:    77
  
  [libx264 @ 0x7f9b3a012e00] consecutive B-frames: 10.0%  0.0% 30.0% 60.0%
  
  [libx264 @ 0x7f9b3a012e00] mb I  I16..4: 42.0% 32.5% 25.5%
  
  [libx264 @ 0x7f9b3a012e00] mb P  I16..4:  0.6%  2.2%  1.6%  P16..4:  4.7%  2.2%  1.2%  0.0%  0.0%    skip:87.4%
  
  [libx264 @ 0x7f9b3a012e00] mb B  I16..4:  0.3%  0.0%  0.0%  B16..8:  3.8%  0.0%  0.0%  direct: 0.0%  skip:95.8%  L0:62.9% L1:37.0% BI: 0.2%
  
  [libx264 @ 0x7f9b3a012e00] 8x8 transform intra:35.1% inter:11.1%
  
  [libx264 @ 0x7f9b3a012e00] coded y,uvDC,uvAC intra: 18.2% 30.0% 25.7% inter: 0.6% 0.4% 0.3%
  
  [libx264 @ 0x7f9b3a012e00] i16 v,h,dc,p: 70% 17% 13%  0%
  
  [libx264 @ 0x7f9b3a012e00] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 43%  8% 47%  0%  0%  0%  1%  0%  1%
  
  [libx264 @ 0x7f9b3a012e00] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 28% 33% 22%  2%  3%  2%  4%  2%  4%
  
  [libx264 @ 0x7f9b3a012e00] i8c dc,h,v,p: 69% 20%  8%  3%
  
  [libx264 @ 0x7f9b3a012e00] Weighted P-Frames: Y:0.0% UV:0.0%
  
  [libx264 @ 0x7f9b3a012e00] ref P L0: 83.5%  5.8%  8.9%  1.8%
  
  [libx264 @ 0x7f9b3a012e00] ref B L0: 66.7% 33.0%  0.2%
  
  [libx264 @ 0x7f9b3a012e00] ref B L1: 85.7% 14.3%
  
  [libx264 @ 0x7f9b3a012e00] kb/s:805.96

  The important part being pipe:0: Input/output error

  I’ve tried this in bash and zsh on OSX and Ubuntu and I get the same error on all of them. I get the same error when trying to pipe with curl or httpie. When I just have file as input it works fine. Am I missing something necessary when piping to ffmpeg ?

• ffmpeg : unsync audio after processing

  18 novembre 2013, par QuickSilver

  I am recording a video and using RecordRTC : WebRTC . After receiving the webm video and wav audio at server, I'm encoding it to a mp4 file using ffmpeg(executing shell command via php). But after encoding process, the audio is unsync with video (audio ends before video). How can I fix this ?

  js code is here

  ffmpeg command used is :

  ffmpeg -y -i 166890589.wav -i 166890589.webm -vcodec libx264 166890589.mp4

  Console output :

  ffmpeg version 0.8.9-6:0.8.9-0ubuntu0.13.04.1, Copyright (c) 2000-2013 the Libav developers
  
    built on Nov  9 2013 19:15:52 with gcc 4.7.3
  
  *** THIS PROGRAM IS DEPRECATED ***
  
  This program is only provided for compatibility and will be removed in a future release. Please use avconv instead.
  
  [wav @ 0x81caa60] max_analyze_duration reached
  
  Input #0, wav, from '166890589.wav':
  
    Duration: 00:00:07.05, bitrate: 1411 kb/s
  
      Stream #0.0: Audio: pcm_s16le, 44100 Hz, 2 channels, s16, 1411 kb/s
  
  [matroska,webm @ 0x823c340] Unknown entry 0x63C5
  
  [matroska,webm @ 0x823c340] Estimating duration from bitrate, this may be inaccurate
  
  
  
  Seems stream 0 codec frame rate differs from container frame rate: 1000.00 (1000/1) -> 10.00 (10/1)
  
  Input #1, matroska,webm, from '166890589.webm':
  
    Duration: 00:00:08.40, start: 0.000000, bitrate: N/A
  
      Stream #1.0: Video: vp8, yuv420p, 320x240, PAR 1:1 DAR 4:3, 10 tbr, 1k tbn, 1k tbc (default)
  
  [buffer @ 0x8245620] w:320 h:240 pixfmt:yuv420p
  
  [libx264 @ 0x82618a0] using SAR=1/1
  
  [libx264 @ 0x82618a0] using cpu capabilities: MMX2 SSE2Fast SSSE3 FastShuffle SSE4.2 AVX
  
  [libx264 @ 0x82618a0] profile Main, level 1.1
  
  [libx264 @ 0x82618a0] 264 - core 123 r2189 35cf912 - H.264/MPEG-4 AVC codec - Copyleft 2003-2012 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x1:0x111 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=0 me_range=16 chroma_me=1 trellis=1 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=0 b_adapt=1 b_bias=0 direct=1 weightb=0 open_gop=1 weightp=2 keyint=250 keyint_min=10 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=1.25 aq=1:1.00
  
  Output #0, mp4, to '166890589.mp4':
  
    Metadata:
  
      encoder         : Lavf53.21.1
  
      Stream #0.0: Video: libx264, yuv420p, 320x240 [PAR 1:1 DAR 4:3], q=-1--1, 10 tbn, 10 tbc (default)
  
      Stream #0.1: Audio: libvo_aacenc, 44100 Hz, 2 channels, s16, 200 kb/s
  
  Stream mapping:
  
    Stream #1.0 -> #0.0
  
    Stream #0.0 -> #0.1
  
  Press ctrl-c to stop encoding
  
  frame=   84 fps=  0 q=25.0 Lsize=     260kB time=7.06 bitrate= 301.3kbits/s    
  
  video:83kB audio:172kB global headers:0kB muxing overhead 1.783102%
  
  frame I:1     Avg QP:17.52  size:  6554
  
  [libx264 @ 0x82618a0] frame P:41    Avg QP:19.07  size:  1555
  
  [libx264 @ 0x82618a0] frame B:42    Avg QP:20.01  size:   325
  
  [libx264 @ 0x82618a0] consecutive B-frames: 33.3%  0.0%  0.0% 66.7%
  
  [libx264 @ 0x82618a0] mb I  I16..4: 36.7%  0.0% 63.3%
  
  [libx264 @ 0x82618a0] mb P  I16..4:  3.8%  0.0%  5.0%  P16..4: 34.3%  9.8%  7.1%  0.0%  0.0%    skip:40.0%
  
  [libx264 @ 0x82618a0] mb B  I16..4:  1.4%  0.0%  0.1%  B16..8: 37.5%  5.5%  0.4%  direct: 2.5%  skip:52.5%  L0:41.4% L1:51.5% BI: 7.2%
  
  [libx264 @ 0x82618a0] coded y,uvDC,uvAC intra: 40.7% 76.2% 26.8% inter: 10.9% 22.5% 2.7%
  
  [libx264 @ 0x82618a0] i16 v,h,dc,p: 28% 34% 23% 15%
  
  [libx264 @ 0x82618a0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 29% 28% 21%  3%  4%  4%  5%  3%  3%
  
  [libx264 @ 0x82618a0] i8c dc,h,v,p: 49% 20% 26%  4%
  
  [libx264 @ 0x82618a0] Weighted P-Frames: Y:0.0% UV:0.0%
  
  [libx264 @ 0x82618a0] ref P L0: 62.7%  4.6% 16.3% 16.4%
  
  [libx264 @ 0x82618a0] ref B L0: 79.0% 21.0%
  
  [libx264 @ 0x82618a0] kb/s:80.00