On 1/9/06, David Abrahams <[EMAIL PROTECTED]> wrote: > > I notice that the performance of playback seems to be suboptimal. For > example, I captured some HDTV video over firewire using MythTV. When > I try to play it back using the frontend, it is totally unwatchable. > [...] > However, when I use VLC to play the same file, it looks almost > perfect [...] > And if Darwin-specific playback > code turns out to help, doesn't it indicate that the playback code > MythTV is using for all other platforms today could be a whole lot > more efficient?
>From what I've read, there isn't much PPC or Darwin optimization in MythTV - at least not in the releases. I don't know about SVN. I use 0.18.1 on an old 550 MHz G4 PowerBook with 768 MB RAM as my kitchen frontend with nothing else running on it, and it just barely handles the task. (E.g. it starts to stutter when mythtvosd scrolls something through the frame.) OTOH my master backend ist a Gentoo PIII 600 MHz with only 256 MB RAM (I know, I should buy some more...) which also doubles as my living room frontend and usually has other stuff (server apps, iPod transcoding, commercial flagging, etc.) running in the background - yet it feels a lot more responsive than the OS X frontend and hardly ever stutters. I've spent some time setting up setuid permissions and process priorities on the Linux box, but I don't think I'll manage to squeeze much more performance out of the OS X frontend doing that. So I' can't vouch for possible x86 optimization, but I'm pretty sure the code could be tweaked to run faster on Darwin/PPC. Jens _______________________________________________ mythtv-users mailing list [email protected] http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
