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

[Grant Edwards]

On Tue, Oct 12, 2004 at 02:17:21PM -0500, Michael J. Lynch wrote:

> >>>>If so, what could account for the large difference in
> >>>>processor usage between "watch videos" and "watch recordings"
> >>>>playing the same file?
> >>>>
> >>>AFAICT, Myth's SW decoding/playback functions are an order of
> >>>magnitude slower than those used by xine and mplayer.
> >>>
> >>All of the above use the same underlying code (libavcodec).
> >>You've got a configuration problem if you can't play things
> >>back properly.
> >
> >Any suggestions on where to look for such a configuration
> >problem?  It would be pretty cool if I could use my laptop as a
> >front end.
>
> So...since mplayer, xine, and myth all use the same underlying
> libs to do play back, isn't it reasonable to expect that
> playing the same file in any one of these should result in
> nearly identical processor usage numbers if configurations are
> close to the same?
> 
> As Grant states, if it is a configuration problem, what are
> the most likely items that could so drastically affect the
> amount of processor usage?  My first guess would be deint
> after that, I wouldn't have a clue since I'm not using any
> filters or other fancy stuff.

I wasn't using deinterlacing, and didn't have any filters
enabled.  I don't know what other configuration items to look
at.

-- 
Grant Edwards
grante at visi.com