Forums

video scaling

Started by val3 February 3, 2005
Hi,


I am working on an embedded WinCE 5.0 project at my universi=ADty. I
want to
play full screen VCD MPEG on 1024x768. I try to use an AMD G=ADEODE GX1
SBC,
which is equipped with an MPEG decoder assistant and arbitra=ADry
scaling unit
(CS5530A). I conducted experiments with WMP: it worked fine =ADin 100%
size (no
resize of the video), but the fps dropped down significantly=AD when I
tried to
rescale the video (ex.: 200%). The video playing at 100% was=AD fine,
even with
a 720xX MPEG video. So I assume that the WMP, which is obvio=ADusly
renders
through DirectShow, may uses the MPEG decoder, but not the s=ADcaling
capabilities of the hardware.


Are my assumptions right? The scaling capabilities not imple=ADmented in
driver=20
level?=20


B=E1lint K=E1tay.

> I am working on an embedded WinCE 5.0 project at my universi=ADty. I
Using the exact same hardware, but using Linux, I did a range of commercial products. The only way to get acceptable fullscreen performance is to use an analog video path and switch into a native lo-res video mode when playing the VCD.