[Bug 656155] ffdec_mpeg2video and interlace property

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=656155
  GStreamer | gst-ffmpeg | 0.10.12

--- Comment #11 from Vincent Penquerc'h <vincent.penquerch at collabora.co.uk> 2011-09-02 10:34:10 UTC ---
OK, to recap:

While looking at the patch Simon sent, I first thought I could get the buffer
to have the right caps from the start. It turns out ffmpeg has not set the
right flags yet when it calls the buffer allocation.

So next, I thought we only need to reset caps when the interlaced flag changes.
I did this. I looked at the history, and saw this patch that moved the caps
setting from where it was (which is also where Simon moved it). I read the
commit message, which mentioned the extra copy when making the buffer writable,
so I pointed it out to ensure you were aware of the performance implication of
making every buffer writable.

Now, which patch are you using which makes things unusably slow ? Simon's
original one, or my later one ?

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