[Bug 747728] vp8enc: multipass-mode=2 is not working

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=747728

--- Comment #9 from Oleksij Rempel <bug-track at fisher-privat.net> ---
I place my comment here too:
this patch (Bug 726329) introduced an regression on two pass encoding. Some
DVDs will cause caps renegotiation just at the end of stream and as result
corrupted multipass cache.
The issue looks like fallowing:
1. start of stream
2. frames
.........
5. caps reinit.
6. frames
6. end of stream.

Since reinit will send NULL frame image to the encoder, it will create EOS
header for the multipass cache file. Next frame will reinit multipass file and
actual end of stream will create one more header with EOS and wrong count of
frames.

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