[theora] limitation in encoder

[ogg.k.ogg.k at googlemail.com]

> I  have a question about libtheora examples. I have modified png2theora
> source code and the encoder stops after 3000 encoded frames. I don't know if
> it s a limitation in libtheora or something else.

It is not. However, it might be that you have a missing file in the
sequence, or that it is somehow unreadable. png2theora will stop when
the "next file in sequence" isn't there.
Or your modifications are buggy.