[Softdevice-devel] Poor performance and crashes on G450 SCART-RGB output
marko.makela at hut.fi
Sat Jun 11 15:37:06 CEST 2005
On Sat, Jun 11, 2005 at 01:28:15PM +0200, Stefan Lucke wrote:
> There is a small misunderstanding. Color space conversion is done in
> hardware (YUY2 -> RGB). Color format change is done in software
> (YV12 -> YUV2).
I see. Is there any way to speed up the software part? I.e., can the
conversion be done in-place, so that the Y component need not be
written? (On a second thought, that shouldn't bring much, because all
components will be fetched to the processor caches anyway.)
When I used deinterlacing and the software-intensive pixel format (YUV2?)
with VGA output, the sound played smoothly, but video frames were dropped
every now and then. With -vo:mgatv and obviously without deinterlacing,
I also get dropped _audio_ frames, which is really annoying.
More information about the Softdevice-devel