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• ffmpeg error while converting to mp4 Error while opening encoder for output stream #0.0

  20 mars 2016, par Josh

  I am trying to convert various file types to mp4 to be displayed using ffmpeg, but i keep getting the error :

  Error while opening encoder for output stream #0.0 - maybe incorrect parameters such as bit_rate, rate, width or height

  Another piece that looks important is :

  [libx264 @ 0x93caef0] broken ffmpeg default settings detected

  [libx264 @ 0x93caef0] use an encoding preset (e.g. -vpre medium)

  [libx264 @ 0x93caef0] preset usage : -vpre -vpre

  [libx264 @ 0x93caef0] speed presets are listed in x264 —help

  [libx264 @ 0x93caef0] profile is optional ; x264 defaults to high

  The latest code I am running is :

  ffmpeg -i source -s 320x240 -r 30000/1001 -b 200k -bt 240k -vcodec libx264 -coder 0 -bf 0 -refs 1 -flags2 -wpred-dct8x8 -level 30 -maxrate 10M -bufsize 10M -acodec libfaac -ac 2 -ar 48000 -ab 192k destination

  I have seen a few other people with this issue, but their fixes didn’t work for some reason.

  In case it matters : ultimately this will be used in php, though I am trying to get it working first via putty

  EDIT: : Here is the full thing as requested(using a wmv, have tested wmv and flv) :

       ~ >> ffmpeg -i path.wmv -s 320x240 -r 30000/1001 -b 200k -r 29.97 -bt 240k -vcodec libx264 -coder 0 -bf 0 -refs 1 -flags2 -wpred-dct8x8 -level 30 -maxrate 10M -bufsize 10M -acodec libfaac -ac 2 -ar 48000 -ab 192k path.mp4
  
  FFmpeg version SVN-r26076, Copyright (c) 2000-2011 the FFmpeg developers
  
    built on Aug 28 2012 17:55:47 with gcc 4.1.2 20080704 (Red Hat 4.1.2-52)
  
    configuration: --enable-version3 --enable-gpl --enable-nonfree --enable-shared --enable-postproc --enable-avfilter --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libvpx --enable-libfaac --enable-libmp3lame --enable-libtheora --enable-libvorbis --enable-libx264 --enable-libxvid --disable-ffplay --disable-indevs --disable-outdevs --disable-demuxer=v4l --disable-demuxer=v4l2 --disable-mmx
  
    libavutil     50.36. 0 / 50.36. 0
  
    libavcore      0.16. 1 /  0.16. 1
  
    libavcodec    52.108. 0 / 52.108. 0
  
    libavformat   52.93. 0 / 52.93. 0
  
    libavdevice   52. 2. 3 / 52. 2. 3
  
    libavfilter    1.74. 0 /  1.74. 0
  
    libswscale     0.12. 0 /  0.12. 0
  
    libpostproc   51. 2. 0 / 51. 2. 0
  
  
  
  Seems stream 1 codec frame rate differs from container frame rate: 1000.00 (1000/1) -> 29.97 (30000/1001)
  
  Input #0, asf, from 'path.wmv':
  
    Metadata:
  
      SfOriginalFPS   : 299
  
      WMFSDKVersion   : 11.0.6001.7000
  
      WMFSDKNeeded    : 0.0.0.0000
  
      IsVBR           : 0
  
      title           : Wildlife in HD
  
      artist          :
  
      copyright       : © 2008 Microsoft Corporation
  
      comment         : Footage: Small World Productions, Inc; Tourism New Zealand | Producer: Gary F. Spradling | Music: Steve Ball
  
    Duration: 00:00:30.09, start: 8.000000, bitrate: 6977 kb/s
  
      Stream #0.0(eng): Audio: wmav2, 44100 Hz, 2 channels, s16, 192 kb/s
  
      Stream #0.1(eng): Video: vc1, yuv420p, 1280x720, 5942 kb/s, 29.97 tbr, 1k tbn, 1k tbc
  
  File 'path.mp4' already exists. Overwrite ? [y/N] y
  
  [buffer @ 0x9ce9eb0] w:1280 h:720 pixfmt:yuv420p
  
  [scale @ 0x9ce8f70] w:1280 h:720 fmt:yuv420p -> w:320 h:240 fmt:yuv420p flags:0x4
  
  [libx264 @ 0x9ce9ef0] broken ffmpeg default settings detected
  
  [libx264 @ 0x9ce9ef0] use an encoding preset (e.g. -vpre medium)
  
  [libx264 @ 0x9ce9ef0] preset usage: -vpre <speed> -vpre <profile>
  
  [libx264 @ 0x9ce9ef0] speed presets are listed in x264 --help
  
  [libx264 @ 0x9ce9ef0] profile is optional; x264 defaults to high
  
  Output #0, mp4, to 'path.mp4':
  
      Stream #0.0(eng): Video: libx264, yuv420p, 320x240, q=2-31, 200 kb/s, 90k tbn, 29.97 tbc
  
      Stream #0.1(eng): Audio: libfaac, 48000 Hz, 2 channels, s16, 192 kb/s
  
  Stream mapping:
  
    Stream #0.1 -> #0.0
  
    Stream #0.0 -> #0.1
  
  Error while opening encoder for output stream #0.0 - maybe incorrect parameters such as bit_rate, rate, width or height
  
  </profile></speed>

  Thanks for any help

• Why does FFMPEG report the wrong duration ?

  27 avril 2013, par Adrian Lynch

  I have an oldish build of FFMPEG that I can't easily change.

  We use FFMPEG to find the duration of video and sound files. So far it has been working wonderfully.

  Recently on an uploaded file, FFMPEG has reported a 30 second file as being 5 minutes 30 seconds in length.

  Could it be something wrong with the file rather than FFMPEG ?

  If I use FFMPEG to convert to another file, the duration is restored.

  In case it matters, ffmpeg -i 'path to the file' produces :

      FFmpeg version Sherpya-r15618, Copyright (c) 2000-2008 Fabrice Bellard, et al.
        libavutil     49.11. 0 / 49.11. 0
        libavcodec    52. 0. 0 / 52. 0. 0
        libavformat   52.22. 1 / 52.22. 1
        libavdevice   52. 1. 0 / 52. 1. 0
        libswscale     0. 6. 1 /  0. 6. 1
        libpostproc   51. 2. 0 / 51. 2. 0
        built on Oct 14 2008 23:43:47, gcc : 4.2.5 20080919 (prerelease) [Sherpya]
      Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'H :\path\to\file.mov' :
        Duration : 00:05:35.00, start : 0.000000, bitrate : 1223 kb/s
          Stream #0.0(eng) : Audio : aac, 44100 Hz, stereo, s16
          Stream #0.1(eng) : Video : h264, yuv420p, 720x576, 25.00 tb(r)
      Must supply at least one output file
  

  It's that very command I use to then extract the duration with RegEx.

  Does anyone have a nice application that can do what I'm trying above but get it right 100% of the time ?

• FFmpeg returning an error - What does it mean ?

  19 mars 2013, par user1031947

  I am using FFmpeg, libmp3lame & libx264 along with the node fluent-ffmpeg module. This is my first foray into processing uploaded videos.

  From node, I use the following code to process an uploaded video :

  var proc = new ffmpeg({ source: src, nolog: true })
  
      .usingPreset( "podcast" )
  
      .withAudioCodec( "libmp3lame" )
  
      .saveToFile( dest, function( retcode, err ){
  
           if( err ) throw err;
  
           ...
  
      });

  When I try to process a video, this fails with the following error, which I don't understand. I am hoping someone here can help point me in the right direction. Thanks !

  > ffmpeg version 0.8.5-6:0.8.5-1, Copyright (c) 2000-2012 the Libav
  
  > developers   built on Jan 13 2013 12:05:48 with gcc 4.7.2
  
  > *** THIS PROGRAM IS DEPRECATED *** This program is only provided for compatibility and will be removed in a future release. Please use
  
  > avconv instead.
  
  > 
  
  > Seems stream 0 codec frame rate differs from container frame rate:
  
  > 5994.00 (5994/1) -> 29.97 (2997/100) Input #0, mov,mp4,m4a,3gp,3g2,mj2, from
  
  > '/home/ssp/resources/tmp/32111bf4217e87c23328ec81c56c7d02':  
  
  > Metadata:
  
  >     major_brand     : M4VP
  
  >     minor_version   : 1
  
  >     compatible_brands: M4VPM4A mp42isom
  
  >     creation_time   : 2008-08-26 17:28:47   Duration: 00:00:08.01, start: 0.000000, bitrate: 944 kb/s
  
  >     Stream #0.0(eng): Video: h264 (Constrained Baseline), yuv420p, 480x272, 815 kb/s, 29.97 fps, 29.97 tbr, 2997 tbn, 5994 tbc
  
  >     Metadata:
  
  >       creation_time   : 2008-08-26 17:28:47
  
  >     Stream #0.1(eng): Audio: aac, 44100 Hz, stereo, s16, 124 kb/s
  
  >     Metadata:
  
  >       creation_time   : 2008-08-26 17:28:47 [buffer @ 0xb685a0] w:480 h:272 pixfmt:yuv420p [scale @ 0xb63280] w:480 h:272 fmt:yuv420p ->
  
  > w:320 h:176 fmt:yuv420p flags:0x4 [libx264 @ 0xb67c20] VBV maxrate
  
  > unspecified, assuming CBR [libx264 @ 0xb67c20] using cpu capabilities:
  
  > MMX2 SSE2Fast SSSE3 FastShuffle SSE4.2 AVX [libx264 @ 0xb67c20]
  
  > profile Main, level 1.3 Output #0, m4v, to
  
  > '/home/ssp/resources/users/11/026468c8f4ea1beee0a585ebc2208137.m4v':  
  
  > Metadata:
  
  >     major_brand     : M4VP
  
  >     minor_version   : 1
  
  >     compatible_brands: M4VPM4A mp42isom
  
  >     creation_time   : 2008-08-26 17:28:47
  
  >     encoder         : Lavf53.21.1
  
  >     Stream #0.0(eng): Video: libx264, yuv420p, 320x176, q=10-51, 512 kb/s, 90k tbn, 29.97 tbc
  
  >     Metadata:
  
  >       creation_time   : 2008-08-26 17:28:47
  
  >     Stream #0.1(eng): Audio: libmp3lame, 44100 Hz, 1 channels, s16, 128 kb/s
  
  >     Metadata:
  
  >       creation_time   : 2008-08-26 17:28:47 Stream mapping:   Stream #0.0 -> #0.0   Stream #0.1 -> #0.1 Press ctrl-c to stop encoding frame=  240 fps=154 q=11.0 Lsize=     642kB time=7.97 bitrate=
  
  > 659.3kbits/s     video:516kB audio:126kB global headers:0kB muxing overhead 0.000000% frame I:1     Avg QP:15.35  size:  9995 [libx264 @
  
  > 0xb67c20] frame P:77    Avg QP:13.25  size:  5419 [libx264 @ 0xb67c20]
  
  > frame B:162   Avg QP:18.31  size:   625 [libx264 @ 0xb67c20]
  
  > consecutive B-frames:  2.5% 12.5% 30.0% 55.0% [libx264 @ 0xb67c20] mb
  
  > I  I16..4:  9.1%  0.0% 90.9% [libx264 @ 0xb67c20] mb P  I16..4:  2.1% 
  
  > 0.0%  2.8%  P16..4: 18.0% 29.9% 44.8%  0.0%  0.0%    skip: 2.3% [libx264 @ 0xb67c20] mb B  I16..4:  0.1%  0.0%  0.0%  B16..8: 35.2%
  
  > 20.2%  1.9%  direct:14.5%  skip:28.1%  L0:26.3% L1:38.1% BI:35.6% [libx264 @ 0xb67c20] coded y,uvDC,uvAC intra: 83.7% 91.7% 84.7% inter:
  
  > 27.7% 43.4% 13.9% [libx264 @ 0xb67c20] i16 v,h,dc,p: 20% 29% 42%  9% [libx264 @ 0xb67c20] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 17% 29% 20%  4% 
  
  > 8%  6%  9%  3%  4% [libx264 @ 0xb67c20] i8c dc,h,v,p: 60% 19% 16%  5%
  
  > [libx264 @ 0xb67c20] Weighted P-Frames: Y:2.6% UV:0.0% [libx264 @
  
  > 0xb67c20] ref P L0: 75.6% 13.5%  8.0%  2.8%  0.1% [libx264 @ 0xb67c20]
  
  > ref B L0: 94.5%  5.5% [libx264 @ 0xb67c20] kb/s:528.00