[theora] buggy encoder ??

Gregory Maxwell gmaxwell at gmail.com
Sun Sep 20 18:01:20 PDT 2009

On Sun, Sep 20, 2009 at 8:16 PM, Michael A. Peters <mpeters at mac.com> wrote:
> I just looked at some of my ogg files created on Ubuntu jaunty via ffmpeg.
> According to ogginfo:
> -=-
> User comments section follows...
>         encoder=Lavc52.20.0
> Negative granulepos on vorbis stream outside of headers. This file was
> created by a buggy encoder
> -=-
> Is that something I should worry about, and if so, do I just need to
> update the theora libs or do I need to update ffmpeg as well?

You should probably avoid creating Ogg/Theora files with ffmpeg if you
can.  FFmpeg2theora would be the preferred alternative.   I believe
the current ffmpeg doesn't have the muxer problems that cause that
message, but fixes/improvements to theora related support in ffmpeg
proper tend to be slow in coming.

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