[mythtv-users] mpeg2 playback performance issue makes no sense
papenfuss at juneau.me.vt.edu
Tue Oct 12 15:34:28 UTC 2004
> First, whether or not I have enough CPU crank to play back high quality
> Once I know this, I can determine whether or not I need a 250 or a 350 to be
> to "watch live tv" in reasonbly high quality.
Funky filters notwithstanding (deinterlacing, on-the-fly color
correction or denoising, etc), if you've got a vid card with Xv, you can
play back DVD-quality MPEG2 files easily with a 450MHz Celeron. Throw in
kernel deint like I do on a PIII-750, and it takes about 40% CPU to play
back an ivtv-recorded stream.
> Second, I want an objective method by which the playback settings can be
> indepentdent of backend recording settings. That is, if I have a "known good
> I can make adjustmets to playback knowing that none of the recording settings
> affecting the quality, etc. of the video.
Sounds like a good idea.
> Actually, even though the video skipped, etc. I was able to do the second
> thing I was
> interested in getting done. Now knowing what you've written here, I think I
> probably safely get away with a PVR-250.
Yes. I think the PVR-350 is a nice idea and has potential, but
the limitations on it (non-accelerated playback of non-MPEG2 files, driver
bugginess, overlaying, etc) seem like an awful troublesome solution to a
nonexistent CPU utilization problem. The quality OTOH is another issue.
> I've searched the archives and asked the question several times and this is
> the first
> response from any of my posts that tells me how to do this. Thank you.
>> Finally, (and I'm not sure if this still holds true) you could simply
>> launch the internal player from the command line with "mythtv <filename>".
>> mythtv-users mailing list
>> mythtv-users at mythtv.org
> Michael J. Lynch
> What if the hokey pokey IS what it's all about -- author unknown
> mythtv-users mailing list
> mythtv-users at mythtv.org
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