On 8/24/05, Todd Ignasiak <[EMAIL PROTECTED]> wrote: > Yeah, I primarily use software decoding, because of the XvMC issues. > My system is not as beefy as yours (Socket754 3200+) but it can handle > a single HD stream (though, I think my playback is smoother with > XvMC.. I see a 'judder' effect on panning scenes with software > decode). > > But, with the capability there in the hardware, I would like to take > advantage of it. I'm hoping it would let my relatively modest system > be able to handle PiP with two HD streams, postprocessing while > viewing other material, or any random Linux function running without > effecting MythTV. > > > Prior to MythTV, I used a "MyHD" card in windows. It had a hardware > decoder, so I got used to doing HD with low CPU overhead.. I'm trying > to get close to that effect in Myth. > > On 8/24/05, Isaac Richards <[EMAIL PROTECTED]> wrote: > > On Wednesday 24 August 2005 02:07 pm, Todd Ignasiak wrote: > > > I noticed that Nvidia posted a new driver version, 7676, a week or so ago. > > > > > > I downloaded the AMD64 version, hoping to get reliable XvMC operation, > > > but it didn't have any noticeable improvements on my system. > > > > > > > > > XvMC still fails to initialize. I didn't bother messing with it any > > > more, but I assume it's still the same behavior as 7667, where you > > > have to try initializing it 20+ times, then finally you get lucky and > > > it works. After that it works every time. > > > > What do you need XvMC for on an amd64 system? I can pretty easily decode, > > deinterlace, and display three 1080i streams simultaneously with pure > > software decoding on my dev system. Might be able to do four with a little > > tweaking, if I cared to. Granted, it's a dual-core 4400+, but that's > > similar > > enough to two 3500+ chips that I can't imagine 1080i not playing smoothly in > > software on almost any xp 64. > > > > On this machine, one 1080i stream doesn't even trip the powernowd > > thresholds, > > so the cpu stays downclocked/volted to it's minimum level - at that point, > > I'd rather keep load on the CPU and off of the video card so the videocard > > doesn't start adding more heat to the system. > > > > Isaac > > _______________________________________________
This would be nice, but I don't have mpeg2 cards, just generic cheapy bt8x cards. So my AMD64 is feeling pretty used at times, like recording times. And during those times, if XvMC was working, I could watch HD streams without worrying if the systems going to get unstable or the playback get choppy. I do see your point though, it is nice having the ability to playback the HD stream when nothing else is going on, I even think my system could handle 2 streams simultaneously if nothing else was happening... Cool _______________________________________________ mythtv-users mailing list [email protected] http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
