[mythtv-users] mpeg4 on Ion ?

[Nick Morrott]

On 2 March 2010 16:53, Travis Tabbal <travis at tabbal.net> wrote:
> MPEG4 in VDPAU is a quite new feature and I think it only works on the G2xx
> cards. I don't think the ION has the proper hardware for it. Transcode to
> h264, and it should work fine. I don't know if there is a default setting in
> Myth to do that though, you might have to set it up yourself.

To try to avoid confusion, MPEG-4 is an umbrella standard/term and
includes H.264 (MPEG-4 AVC, MPEG-4 Part 10) and Xvid/DivX (MPEG-4 ASP,
MPEG-4 Part 2) [1].

H.264 can be decoded by all VDPAU-supported graphics chips (those
supporting feature sets A, B,or C). Xvid/DivX requires a graphics chip
supporting feature set C, which means a Geforce 200M series chip [2].
Ion chipsets only support feature set B, which will explain the OP's
problems.


[1] http://en.wikipedia.org/wiki/VDPAU
[2] http://en.wikipedia.org/wiki/Nvidia_PureVideo


Cheers,
Nick

-- 
Nick Morrott

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