[theora] FFMPEG2THEORA 0.26 / BIG Theora testing / BUG in players or Lib

[xiphmont at xiph.org]

> - Hanging + "invalid" frames unfixed

I might as well look at this along with the other muxing problems.

> - YUV4MPEG2 output is still "4:2:0" - subsampled both hor and ver

Not an issue for y4o output, but I don't know if they'd accept the patch.

> - Strange comments:
>
>> Opening video filter: [scale]
>> Movie-Aspect is 1.78:1 - prescaling to correct movie aspect.
>> [swscaler @ 011866D4]BICUBIC scaler, from yuv444p to yuv420p using MMX2
>> VO: [yuv4mpeg] 1280x720 => 1280x720 Planar YV12

Not strange. The y4m output can only do 4:2:0, so it's implicitly
setting up swscale to do the conversion.

Monty