[MPlayer-dev-eng] [PATCH] DXR3 Docs update

[gabucino at mplayerhq.hu]

> > Because if it's enabled (default), MPlayer
> >  - hangs on the 2. second of an MPEG1 file
> It should not do this...
It did some time ago but you are right, now it works "right" (100%).


> >  - plays DVDs with 100% CPU (!) usage
> Yes, when it prebuffers it tries to fill the dxr3's video buffer all the
> time (it does not copy one frame/"played frame"). The DXR3 has a rather
> large video buffer, so on most systems it will encode video frames
> constantly, therefore using 100% cpu. The good thing is that this makes
> the playback much less sensitive to other apps spiking the cpu since it
> will have lots of frames in the buffer to play before it starts lagging
> behind. If you run with noprebuf and the cpu spikes it will most likely
> not have time to encode the entire frame before it hits the frames
> timestamp, therefore causing framedropping.
Eh. And the CPU burns while the user thinks it's at 0% ...
Feel free to correct me, but IMHO:
 - let's assume MPEG2 playing takes approx. 5% CPU (it seems to be much less)
 - in this case, we need 20 (!) other processes that each require 100% CPU (!),
   to make DXR3 playback sloppy!
 - this case is highly unlikely on a desktop computer...

Because I couldn't ever make MPEG2 playing lag..
It's nice to _have_ this feature, but IMHO it's not so nice to have it
enabled by default.

-- 
Gabucino

/ Worshipping Niedermayer 4ever /
"Do you always look at it encoded?" (C) D. R. F.
"minden lehet. ez nem." (c) A'rpi
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