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• My FFMPEG converter is not allowing mp4 to webm conversions.

  2 novembre 2016, par Fred Garbutt

  heres the command :

  ffmpeg -i videos/test.mp4 -c:v libvpx -level 216 -profile 0 -qmax 42 -qmin 10 -c:a libvorbis -f webm out.webm

  i keep getting this error :

  Error while opening encoder for output stream #0:0 - maybe incorrect parameters such as bit_rate, rate, width or height

  here is the full response

  # ffmpeg -i videos/test.mp4 -c:v libvpx -level 216 -profile 0 -qmax 42 -qmin 10 -c:a 
  
  
  
  libvorbis -f webm out.webm
  
  ffmpeg version N-49225-g7e059c9 Copyright (c) 2000-2013 the FFmpeg developers
  
    built on Jan 24 2013 05:14:06 with gcc 4.1.2 (GCC) 20080704 (Red Hat 4.1.2-54)
  
    configuration: --enable-version3 --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libvpx --enable-libfaac --enable-libmp3lame --enable-libtheora --enable-libvorbis --enable-libx264 --enable-libxvid --enable-gpl --enable-postproc --enable-nonfree
  
    libavutil      52. 15.101 / 52. 15.101
  
    libavcodec     54. 90.100 / 54. 90.100
  
    libavformat    54. 61.104 / 54. 61.104
  
    libavdevice    54.  3.102 / 54.  3.102
  
    libavfilter     3. 33.100 /  3. 33.100
  
    libswscale      2.  2.100 /  2.  2.100
  
    libswresample   0. 17.102 /  0. 17.102
  
    libpostproc    52.  2.100 / 52.  2.100
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'videos/test.mp4':
  
    Metadata:
  
      major_brand     : mp42
  
      minor_version   : 1
  
      compatible_brands: mp42avc1
  
      creation_time   : 2010-08-12 15:42:21
  
    Duration: 00:00:34.20, start: 0.000000, bitrate: 358 kb/s
  
      Stream #0:0(eng): Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 100 kb/s
  
      Metadata:
  
        creation_time   : 2010-08-12 15:42:21
  
        handler_name    : Apple Sound Media Handler
  
      Stream #0:1(eng): Video: h264 (Main) (avc1 / 0x31637661), yuv420p, 640x320, 251 kb/s, 29.97 fps, 29.97 tbr, 2997 tbn, 5994 tbc
  
      Metadata:
  
        creation_time   : 2010-08-12 15:42:21
  
        handler_name    : Apple Video Media Handler
  
  Please use -profile:a or -profile:v, -profile is ambiguous
  
  File 'out.webm' already exists. Overwrite ? [y/N] y
  
  v0.9.6
  
  [libvpx @ 0x7e38d20] Failed to initialize encoder: ABI version mismatch
  
  Output #0, webm, to 'out.webm':
  
    Metadata:
  
      major_brand     : mp42
  
      minor_version   : 1
  
      compatible_brands: mp42avc1
  
      Stream #0:0(eng): Video: vp8, yuv420p, 640x320, q=10-42, 200 kb/s, 90k tbn, 29.97 tbc
  
      Metadata:
  
        creation_time   : 2010-08-12 15:42:21
  
        handler_name    : Apple Video Media Handler
  
      Stream #0:1(eng): Audio: none, 44100 Hz, stereo, fltp
  
      Metadata:
  
        creation_time   : 2010-08-12 15:42:21
  
        handler_name    : Apple Sound Media Handler
  
  Stream mapping:
  
    Stream #0:1 -> #0:0 (h264 -> libvpx)
  
    Stream #0:0 -> #0:1 (aac -> libvorbis)
  
  Error while opening encoder for output stream #0:0 - maybe incorrect parameters such as bit_rate, rate, width or height

  does anybody have any idea whats going on ? I am completely lost. I have tried so many different commands. converting from mp4 to ogg works fine, and i have had mp4 to webm working before, but i reinstalled ffmpeg to get the mp4 to ogg working and now ive lost my mp4 to webm conversions. >.< this whole installation process is such a damn nightmare. does anyone havea good tutorial for centos installation of ffmpeg that will work for mp4 ogg and webm ? I have used the centos tut that came off of the ffmpeg site, but it failed me. If anyone has any ideas that could point me in the right direction i would much appreciate it !

• FFMPEG Errors : "max_analyze_duration" "buffer underflow" "packet too large" What to do ?

  8 février 2013, par Leon5x

  I have an error while just copying a video with ffmpeg.
  I use the command :

  ffmpeg -i leon.mpg -vcodec copy -acodec copy leon2.mpg

  The errors :

  [mpeg @ 00000000020ebd20] max_analyze_duration 5000000 reached at 5004000 microseconds
  
  [mpeg @ 00000000042f4020] buffer underflow i=0 bufi=11286 size=14824
  
  [mpeg @ 00000000042f4020] packet too large, ignoring buffer limits to mux it

  What do I have to set that the buffer errors don't occur anymore ?

  Here is a picture of what ffmpeg gives out first. After that the red errors repeat really many times. There you also can see what the film's codec and so on is.
  See this picture :

  I use the ffmpeg Version git-5ce023b (2013-01-15) - Win64 - static build from Zeranoe.
  I tried some things but nothing happened. I searched a while but found no solution.

• Error while extracting subtitle from mkv or m2ts to srt with FFmpeg

  14 février 2013, par user2071701

  I need to extract subtitles from different video files to .srt format (to use it in html5 video).
  I tried a lot of variant i found with google. But every time i get this error :

  Error while opening encoder for output stream #0:0 - maybe incorrect parameters such as bit_rate, rate, width or height

  I think, this error means that ffmpeg can decode source subtitle but cant encode it to .srt format. All codecs a enabled (i compiled the later ffmpeg version from git a few times with a different configuration).

  Here is the output :

      # /usr/local/bin/ffmpeg -i /var/video/sources/Balbesy1.m2ts -an -vn  -copyinkf -scodec srt -f srt -y  sub.srt
  
  ffmpeg version N-49947-g9f16cb9 Copyright (c) 2000-2013 the FFmpeg developers
  
    built on Feb 14 2013 14:26:10 with gcc 4.4.5 (Debian 4.4.5-8)
  
    configuration: --enable-encoder=dvdsub --enable-decoder=dvdsub --enable-decoder=pgssub --enable-encoder=srt --enable-decoder=srt --enable-encoder=srt --enable-decoder=srt
  
    libavutil      52. 17.101 / 52. 17.101
  
    libavcodec     54. 91.103 / 54. 91.103
  
    libavformat    54. 63.100 / 54. 63.100
  
    libavdevice    54.  3.103 / 54.  3.103
  
    libavfilter     3. 37.101 /  3. 37.101
  
    libswscale      2.  2.100 /  2.  2.100
  
    libswresample   0. 17.102 /  0. 17.102
  
  [mpegts @ 0x2719040] Stream #5: not enough frames to estimate rate; consider increasing probesize
  
  [mpegts @ 0x2719040] Could not find codec parameters for stream 5 (Subtitle: hdmv_pgs_subtitle ([144][0][0][0] / 0x0090)): unspecified size
  
  Consider increasing the value for the 'analyzeduration' and 'probesize' options
  
  [NULL @ 0x271fec0] start time is not set in estimate_timings_from_pts
  
  Input #0, mpegts, from '/var/video/sources/Balbesy1.m2ts':
  
    Duration: 01:18:11.89, start: 599.958300, bitrate: 37378 kb/s
  
    Program 1 
  
      Stream #0:0[0x1011]: Video: h264 (High) ([27][0][0][0] / 0x001B), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 23.98 fps, 23.98 tbr, 90k tbn, 47.95 tbc
  
      Stream #0:1[0x1100]: Audio: dts (DTS-HD MA) ([134][0][0][0] / 0x0086), 48000 Hz, 5.1(side), fltp, 768 kb/s
  
      Stream #0:2[0x1101]: Audio: dts (DTS-HD MA) ([134][0][0][0] / 0x0086), 48000 Hz, 5.1(side), fltp, 768 kb/s
  
      Stream #0:3[0x1102]: Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz, 5.1(side), fltp, 448 kb/s
  
      Stream #0:4[0x1103]: Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz, 5.1(side), fltp, 448 kb/s
  
      Stream #0:5[0x1200]: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] / 0x0090)
  
  Output #0, srt, to 'sub.srt':
  
      Stream #0:0: Subtitle: srt
  
  Stream mapping:
  
    Stream #0:5 -> #0:0 (pgssub -> srt)
  
  Error while opening encoder for output stream #0:0 - maybe incorrect parameters such as bit_rate, rate, width or height

  sorry for my english