[MPlayer-users] Error messages when encoding HDTV
Adam Nielsen
a.nielsen at optushome.com.au
Sat Dec 27 03:44:35 CET 2003
> Of course it can play HDTV 1080i in realtime (and with little main cpu use
> too).
Hmm...I might have to look into this, I'd love to be able to watch live HDTV
in realtime.
> > surprisingly enough xvinfo reports my overlay as 2048x2048 however if I
> > try to display anything wider than ~1300 pixels the picture is very
> > unstable.
> With software playback the cpu's too busy for smooth playback...
No, I don't mean the framerate is uneven, I mean the picture (overlay) is
literally unstable - if I *pause* mplayer, some of the scanlines are
constantly jumping around randomly overwriting other parts of the overlay,
what appears to be each refresh. So even though mplayer is paused and
showing a still frame, some of the scanlines are jumping around elsewhere
about 80 times a second...! (80Hz refresh rate.) It's definitely a hardware
limitation that's not being enforced, and it has strange effects when it's
being run way above spec.
> > Can you use the video card's hardware decoding if you want to convert the
> > MPEG-2 stream into something else?
> No - haven't tried that. Not sure it works like that.
Judging by the name "XvMC" it does sound like the MPEG decoding is tied into
the xv overlay, so I guess it can only be shown on-screen. Reminds of the
dxr3/Hollywood+, that could only decode the MPEG data into its internal
framebuffer and display that, although I think it was possible to access the
framebuffer in some cases (screenshots, etc.)
Cheers,
Adam.
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