[FFmpeg-devel] 3D WebM/Matroska tags inclusion

[Jason Garrett-Glaser]

On Fri, Nov 5, 2010 at 7:52 AM, Cyril Russo <stage.nexvision at laposte.net> wrote:
>
>
>> FYI, above/below is always superior (in terms of
>> parallelism/performance). ?I strongly, strongly recommend that it be
>> adopted as the standard method.
>
> Can you elaborate ?
> I don't understand why.

The performance of frame-based threading is limited by the vertical
resolution of a video (at least on video formats which are compressed
in raster order, i.e. nearly everything).  Therefore, you want to
maximize the vertical resolution of videos to maximize parallelism
possibilities, particularly for encoding.

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