[mythtv-users] HDTV Picture in Picture
sammo2828 at gmail.com
Sun Aug 28 03:54:25 UTC 2005
ATI Radeon 9550 running proprietary ATI fglrx kernel module anx
XFree86 4.3. Athlon XP 2500+ with two Twinhan Visionplus DVB-T cards.
I can watch two HDTV (1080i and 576p) channels at the same time with PIP.
On 7/29/05, Todd Ignasiak <ignasiak at gmail.com> wrote:
> I just added a second HD receiver card to my MythTV box. To test both
> receivers, I opened up a Picture-in-Picture window. It was close,
> but it was a bit beyond my Athlon64 3200+'s capabilities. It was
> stuttering a bit on pans and dropping some frames.
> Has anyone else done PiP with two HD streams? What kind of horsepower
> is needed?
> I suppose this would be a good job for a dual core system.
> A few questions/thoughts that I had on this are:
> - Can XvMC accelerate both video streams? I have an NVidia FX5200
> card, with XvMC enabled, is it benefitting both channels?
> - Are the VIA / S3 Unichrome video chips available as standalone
> cards, rather than just integrated into chipsets? Or, do any of the
> other S3 cards that support the full MPEG2 decoding? These could
> greatly reduce the horsepower needed for decoding two streams.
> - Any other things to look into for MPEG2 acceleration?
> I noticed that mplayer, with XvMC, has quite a bit lower CPU
> utilization than MythTV.
> How about x86-64 mode, apparently ffmpeg is optmimized for x86-64,
> is there anything like this available, or in the works, for MythTV?
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