[mythtv-users] Choppy HDTV playback
adeffs.mythtv at gmail.com
Thu Feb 8 23:21:48 UTC 2007
On 2/8/07, Jarod Wilson <lists at wilsonet.com> wrote:
> Steven Adeff wrote:
> > On 2/6/07, Yan Seiner <yan at seiner.com> wrote:
> >> OK, I have recording happening!
> >> Thank you everyone!
> >> I am running 0.20-fixes, and it all seems to be working.
> >> I can record on both tuners, and play back - almost. (Aside: the
> >> backend has 4-400GB Seagate SATA drives, and those things are *NOISY*!!!
> >> Definitely not recommended for a frontend; with both tuners recording,
> >> it sounds like someone is rolling a tin can full of steel balls inside.)
> >> Typically I transcode the HDTV recordings down to 720x480 so my other
> >> frontends can handle them, but I have two front ends that should be able
> >> to handle the full resolution stream.
> >> When I try to play them, though, I get very choppy playback - two
> >> seconds of play, pause, two seconds of playback, pause....
> >> Is that right? Where do I look? Backend should be adequate - it barely
> >> breaks a sweat. Poseidon (the frontend) is an Athlon 2800+ with an
> >> Nvidia 6200 and DVI out to a 1366x720 LCD panel. Not enough horsepower
> >> there?
> > not without XvMC enabled, no. You'll want at least a 3200+ on Poseidon.
> Note to self: figure out exactly *why* you can play back both 1080i and
> 720p material just fine on a 2600+ w/o xvmc...
1080i streams have a much higher resolution than 720p, 2073600 vs
921600 per frame. So you may be able to handle 720p with that
processor, 1080i is just too much.
Before you ask, read the FAQ!
then search the Wiki, and this list,
Mailinglist etiquette -
More information about the mythtv-users