[mythtv] [PATCH] Add new MPEG4 encoding options

[Geoffrey Hausheer]

Here is a patch to include the 'VHQ' and '4MV' encoding options for MPEG4
encoding.  Nothe that these take a LOT of cpu processing, and on my
1.6GHz machine, I can only record at 560x416 with these options enabled
(and that is about 85% usage) as opposed to without them 640x480 uses
only 60%.  The video quality is substatially better though (560x416 with
these options looks significantly better than 640x480 without them in my
opinion).  You can enable VHQ without 4MV, but it is not recommended to
enable 4MV without VHQ (see this page for more info on different options
http://rguyom.ath.cx/)

If anyone is interested, it would be trivial to add qpel or any of the
other options, but qpel is REALLY slow, and I can't notice the
improvement in most cases)

They will default to both enabled (I'm not sure how to change that, but
it would be nice if they defaulted off)

Also, it might be nice to have an 'Advanced' screen, since the main
Encoding screen is a bit cluttered now (and most people won't want these
options)

.Geoff
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