On Thursday 03 March 2005 23:19, Robert Denier wrote:
On Fri, 2005-03-04 at 03:52 +0100, Bernd Müller wrote:
Hello;
I've heard about some mythtv-users successfully playing back MPEG4
video files
over the ivtv-fb of the Hauppauge PVR 350 using a realtime MPEG2
conversion.
Does anybody know a good starting point where to get more
information, e.g.
required converters (mencoder, transcode), scripts etc.
Well I don't have a 350 but from what I can tell if your using
something
called ivtv-fb the last two digits probably stand for framebuffer, so
your video would likely be sent to the the frame buffer on the card.
There shouldn't be any mpeg4- mpeg2 converstion or anything like that,
just the decoding into a rgb or yuv colorspace and the video being
sent
to the card.
IIRC, I believe the issue is that the PVR-350 framebuffer itself is not
fast enough to handle full-framerate video that bypasses the MPEG-2; it
has decoder. Maybe I'm wrong, though...
I think I vaguely remember you needing a little faster
machine than you might otherwise to handle mpeg4 through one of these.
Yes, definitely that, since the -350's framebuffer does not provide
hardware 2D scaling (Xv), so the scaling must be done in software.
-JAC
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