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-   -   Performance of mplayer playing back WMV is miserable (https://talk.maemo.org/showthread.php?t=19814)

Deko 2008-05-08 20:06

Re: Performance of mplayer playing back WMV is miserable
 
That would be nice if a player engine could be broadly integrated in the tablet. The default player plays almost none of my videos. D:

vbrilon 2008-05-09 01:55

Re: Performance of mplayer playing back WMV is miserable
 
Quote:

Originally Posted by Deko (Post 179374)
The default player plays almost none of my videos. D:

Hence my original suggestion to transcode the videos using the ITVC.

myk 2008-05-11 07:07

Re: Performance of mplayer playing back WMV is miserable
 
In case its not clear, the 400MHz ARM CPU just does not have the power
to decode full-resolution videos. Its a pity as the screen has such high
resolution. Some "downloaded" AVIs are low enough resolution, and
mplayer seems to be the best bet.

GeneralAntilles 2008-05-11 15:47

Re: Performance of mplayer playing back WMV is miserable
 
Quote:

Originally Posted by myk (Post 180288)
In case its not clear, the 400MHz ARM CPU just does not have the power
to decode full-resolution videos. Its a pity as the screen has such high
resolution. Some "downloaded" AVIs are low enough resolution, and
mplayer seems to be the best bet.

Not entirely accurate. Due to the oversized screen and the 3rd-party LCD controller that necessitates, we're prevented from using the full potential of both the main ARM core and the IVA video decoder that's built-in.

critgo9 2008-05-11 16:02

Re: Performance of mplayer playing back WMV is miserable
 
why does mplayer play divx movies so slowly? is there a way to make divx movies play faster? its actually pretty annoying when im watching a movie at about 15 fps.

Bundyo 2008-05-11 16:21

Re: Performance of mplayer playing back WMV is miserable
 
What DivX movies, what resolution, how do you play them?

ace 2008-05-11 16:30

Re: Performance of mplayer playing back WMV is miserable
 
ln my experience, video playback is CPU-limited. LCD controller bandwidth is limited, but I usually max out the CPU first.

I think the DSP has the most potential to improve video playback, since it's virtually unused.

GeneralAntilles 2008-05-11 16:38

Re: Performance of mplayer playing back WMV is miserable
 
Quote:

Originally Posted by ace (Post 180386)
ln my experience, video playback is CPU-limited. LCD controller bandwidth is limited, but I usually max out the CPU first.

Yes and no. The controller prevents us from using the IVA (well, perhaps more accurately, made Nokia decide not to use it—for whatever reason), which would help a LOT with video decoding, but there's also things involved with the controller that impact the efficiency of decoding (someone with better knowledge of mplayer could speak to this more completely than myself), so just because it's pegging the CPU doesn't tell the full story.

Quote:

Originally Posted by ace (Post 180386)
I think the DSP has the most potential to improve video playback, since it's virtually unused.

Well, since the stock kernel drops CPU to 330MHz when DSP is in use, you'd actually get worse playback.

ace 2008-05-11 18:38

Re: Performance of mplayer playing back WMV is miserable
 
Quote:

Originally Posted by GeneralAntilles (Post 180392)
Yes and no. The controller prevents us from using the IVA (well, perhaps more accurately, made Nokia decide not to use it—for whatever reason), which would help a LOT with video decoding, but there's also things involved with the controller that impact the efficiency of decoding (someone with better knowledge of mplayer could speak to this more completely than myself), so just because it's pegging the CPU doesn't tell the full story.

By IVA, you mean the onboard graphics, right? Being a Linux user, l guess I just assumed there'd never be driver support for advanced features of the graphics "card". :(

ace 2008-05-11 18:41

Re: Performance of mplayer playing back WMV is miserable
 
Quote:

Originally Posted by GeneralAntilles (Post 180392)
Well, since the stock kernel drops CPU to 330MHz when DSP is in use, you'd actually get worse playback.

True, but since it's not a limitation of the hardware, it's easily fixed. :)


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