[mythtv] FFMpeg sync

[Gavin Hurlbut]

On Tue, May 8, 2012 at 1:25 PM, Paul Kendall <pkendall64 at gmail.com> wrote:
> Would it be at all possible to keep the mythtv specific patches to ffmpeg
> in the external directory so we can attempt to get them included in the
> ffmpeg trunk? I know that some of them are very specific and not likely to
> be accepted, but at least we'll have them available so it should be easier
> to apply each time there's a sync going on.

Well, I'll be working on that through this release cycle a bit.  When
I sync them, I basically do:
a) remove all of FFmpeg
b) add in new sync
c) patch with the delta from before a) to the version of FFmpeg a) was based on
d) fight with it until we find all the discrepancies
e) update all our uses to match the new API

It's a lot of juggling of branches and merging with squashes, etc.
Rather fun...  heh.

However, I'd like to work on getting that delta earlier, and chipping
off parts to send upstream to make it disappear over time.  There are
parts that likely never will go upstream though, but I'm sure parts of
it easily can.