[mythtv-users] Is this beefy machine really not enough to drive HD at 1080p?
derliebegott at gmail.com
Thu Apr 10 18:53:08 UTC 2008
2008/4/10, Steven Adeff <adeffs.mythtv at gmail.com>:
> On Wed, Apr 9, 2008 at 5:51 AM, Ma Begaj <derliebegott at gmail.com> wrote:
> > 2008/4/8, Steve Curtis <scurtis at fixation.net>:
> > > 2008/4/8 Scott Harris <mythtv at webhounds.net>:
> > > > Well, I'm not happy about it, but I can live knowing that it is
> > > > difficult for even the big dogs to decode 1080p ;)
> > > >
> > > >
> > >
> > > I've got a 6400+ in my machine and I couldn't do 1080p - it was stuttering
> > > quite badly. Then I did some updates from mythbuntu, one of which I think
> > > was an X update and suddenly things got a lot smoother. Its still not
> > > perfect, but totally watchable. I tried all sorts of xorg and mplayer
> > > commands - none of which ever really helped. CPU still spikes at 100% - but
> > > a lot of content has black bars top and bottom which I think helps a little
> > > - I only have one 1080p x264 video which is full res and like I say its
> > > watchable - but stutters on slow panning shots still.
> > >
> > > I'm now moving to a separate front/backend in the hope that this will help
> > > in the future so that its an easier job of changing things to get the
> > > performance without messing around with my backend anymore.
> > >
> > So bad? I have no HD content at all (no HD channels in my country) but
> > I tested playing 720p/1080p mkv/wmv trailers files a few weeks ago.
> > I have AMD AM2 X2 3800 35W and I had no problems when playing 1080p.
> > mplayer is working fine with "-vo xv" .... I use "-cache" to cache
> > 64MB or even 132MB which can help a lot. cpu is on 50-70%.
> > I usually use "-vo gl" because I can position subtitles on the bottom
> > of the screen and OSD on the real top of the screen. And "gl" can
> > handle contrast, brightness etc. "xv" is not able to do that. But "gl"
> > needs more cpu, and 1080p is stuttering with "-vo gl".
> > I was not able to play same files with Internal player. I don't
> > remember the error, but it just could not start the files.
> > I know that mplayer can use XvMC only for mpeg files.
> > Is Internal player able to play mkv or wmv files with XvMC?
> XvMC only works with MPEG1/2.
> MKV and WMV are container formats, so if they contain MPEG2 then they
> should work with XvMC. But usually they don't, MKV usually contains
> x264 and WMV usually contains Microsofts media format (loosely based
> on the standard that x264 is based on, but not quite).
Thanks. I read Myth's Wiki right after I sent the email and it is
mostly hardware limitation.
But there is also information about vaapi and it sound pretty good. It
will hopefully become useful pretty soon:
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