[FFmpeg-trac] #616(undetermined:new): WebM/VP8 issue incombination with VLC

FFmpeg trac at avcodec.org
Sun Nov 6 17:33:35 CET 2011

#616: WebM/VP8 issue incombination with VLC
             Reporter:               |                     Type:  defect
  jongerenchaos                      |                 Priority:  normal
               Status:  new          |                  Version:
            Component:               |  unspecified
  undetermined                       |               Blocked By:
             Keywords:               |  Reproduced by developer:  0
             Blocking:               |
Analyzed by developer:  0            |
 I try to use the following command VLC (1.1.15linux) (to transcode the
 mpeg file into a new Webm format):

 cvlc test.mpg --sout

 But when i use this i get the following error:

 [0x2586dd8] avcodec generic error: cannot open codec (MPEG-1/2 Video)
 [0x2587238] avcodec encoder error: cannot find encoder Google/On2's VP8
 *** Your FFMPEG installation is crippled.   ***
 *** Please check with your FFMPEG packager. ***
 *** This is NOT a VLC media player issue.   ***
 [0x2587238] main encoder error: Streaming / Transcoding failed
 [0x2587238] main encoder error: It seems your FFMPEG (libavcodec)
 installation lacks the following encoder:
 Google/On2's VP8 Video.
 If you don't know how to fix this, ask for support from your distribution.

 This is not an error inside VLC media player.
 Do not contact the VideoLAN project about this issue.

 [0x30f79f8] stream_out_transcode stream out error:

 I use the GIT version of ffmpeg (and i can decode and encode webm files
 without any problem with the command ffmpeg  -threads 4 -i input.mpg -s
 720x480 -acodec libvorbis -ab 128k -vcodec libvpx -b 256k -re -f webm

 root at ubuntu:~# ffmpeg
 ffmpeg version 0.8.5.git, Copyright (c) 2000-2011 the FFmpeg developers
   built on Oct 23 2011 11:24:43 with gcc 4.5.2
   configuration: --enable-postproc --enable-libvpx --enable-libvorbis
 --enable-pthreads --prefix=/usr --enable-avfilter
   libavutil    51. 22. 0 / 51. 22. 0
   libavcodec   53. 21. 0 / 53. 21. 0
   libavformat  53. 16. 1 / 53. 16. 1
   libavdevice  53.  4. 0 / 53.  4. 0
   libavfilter   2. 44. 0 /  2. 44. 0
   libswscale    2.  1. 0 /  2.  1. 0
 Hyper fast Audio and Video encoder

 Therefore i think there is a problem with the extension. When i launch the
 VLC with "vcodec=VP80" this will refer to the ffmpeg VP80 video codec
 extension (and this is changed recently in ffmpeg to -vcodec libvpx).

 Is there a solution to repair/solve this problem?

Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/616>
FFmpeg <http://ffmpeg.org>
FFmpeg issue tracker

More information about the FFmpeg-trac mailing list