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.