[FFmpeg-devel] [FFmpeg-devel-irc] IRC log for 2010-03-01

[Michael Niedermayer]

On Wed, Mar 03, 2010 at 10:21:29AM +0000, Loren Merritt wrote:
> On Tue, 2 Mar 2010, Jason Garrett-Glaser wrote:
>> On Tue, Mar 2, 2010 at 5:31 PM, Michael Niedermayer <michaelni at gmx.at> 
>> wrote:
>>
>>> gthreepwood, (me hopes he reads this) you could try the rotate in snow
>>> because, if its good in terms of quality vs bitrate and speed we can 
>>> actually
>>> add it to the spec easily. Also snow uses mpegvideo/motion_est so you 
>>> would
>>> be able to test a wavelet codec (snow) and mpeg4-asp with minimal 
>>> additional
>>> code
>>
>> Very good point, the rotation makes a whole lot of sense for Snow's
>> approach, though it might be a bit tricky to reconcile it with OBMC
>> effectively.
>
> Any continuous field of rotation and/or scaling is equivalent to mesh MC, 
> which is easy enough to merge with OBMC. However, multiref is 
> discontinuous, and I'm not sure how best to extend mesh to that case.

the way i imagined it is that we just would handle rotation and scaling like
translation. That is there would always be perfectly aligned 16x16 (or 8x8)
blocks at the output side and thus no change for OBMC, rather the area read
for block MC would be rotated and scaled

[...]
-- 
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

Opposition brings concord. Out of discord comes the fairest harmony.
-- Heraclitus
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