[mythtv-users] mpeg2 playback performance issue makes no sense

Joseph A. Caputo jcaputo1 at comcast.net
Wed Oct 13 14:33:13 UTC 2004

On Wednesday 13 October 2004 09:50, Michael J. Lynch wrote:
> See comment inline below:
> ><jcaputo1 at comcast.net> wrote:
> >>On Tuesday 12 October 2004 10:27, Michael J. Lynch wrote:
> >>>Ah ha....See comment below.
> >>>
> >>>Joseph A. Caputo wrote:
> >>>>If you really want to see how Myth's internal player performs,
> >>>>instead of trying to trick Myth into playing it as a recorded TV
> >>>>program, simply use MythVideo ("Watch Videos").  There is a setup
> >>>>option that lets you configure the player command to use for
> >>>> this; apparently you have yours configured for mplayer (the
> >>>> default, IIRC).  If you change this to "Internal", it will use
> >>>> the internal player without the need to fool Myth.
> >>
> >>[snip]
> Ok...so I did this just this morning.  The results are:
>     Myth Internal Player:  Processor pegged regardless of whether or
> not deint is enabled
>     MPlayer:                     80% Idle
> These are the same results as my "fool Myth into thinking the VOB is
> a recording"
> method.  Clearly there must be some major difference between how
> Myth's internal player is
> playing back video and how MPlayer is playing back the same video. 
> It could be
> configuration and/or other factors.  A while back a message was
> posted by someone who
> claimed that they had enabled some optimizer options when they
> compiled one of the addon
> modules and cpu idle time (for that module) went from %30 to %10. 
> Could this apply here also.
> Clearly, with my internal player as it is (misconfigured or
> whatever), I will not be able to "watch
> live tv" using a PVR250 and will have to opt for a PVR350. 
> But....from what appears to be objective
> testing, I /should/ be able to use a PVR250 if I can get the internal
> player to perform at least close to
> the level of performance of MPlayer.  So...does anyone have any ideas
> on whaat playback configuration
> items I could play around with to see if I can get some processor
> back? I've don't use any filters and
> I have already tried disabling deint.  Suprisingly though, disabling
> deint had almost zero effect on
> processor idle time.  That is very curious to me.

You still haven't provided any useful output from mythfrontend that 
could help explain why you're seeing this.

> Just out of curiosity, is there a way to make the frontend use
> MPlayer instead of it's internal player when
> playing back recordings or watching live TV?  



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