[MPlayer-dev-eng] Mpeg2 Interlace

[Ivan Kalvatchev]

Hello Arpi

First i should say that i was wrong, the
postprocessing is not responsible for corruption of
interlaced Mpeg2. The reason is in rewrite that
removes mpeg2dec libvo. I cannot understand why you
have made it so. The mpeg2dec video_out is reentrant.
It has support for interlaced modes. Maybe you waned
more simplicity?  
For now I send you a patch that completes your fix for
this (it's rem'ed). I don't like it too, but as I said
before it's better to work slow that not to work at
all. 
In all cases even if vo_draw draws only odd/even
field, the result won't be so good, because xv or SDL
make one more copy of the whole frame( 2 times per
field).

Moreover it is possible to change draw_slice to use
field draw with minimum efforts. You should add one
flag. It fits perfectly because draw_slice is used
only by mpeg2.

Comments on current patch:
copy_slice - could be removed. First I lost my time to
make it work correctly. When I made it work I realised
that it could not be used to display output to the
screen because it follow decode process that is not
12345 but something like 1423.

The rest is like mplayer -pp 1 ... workaround, but
without postprocessing.

Best Regards 
  Ivan Kalvachev



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