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maemo.org - Talk (https://talk.maemo.org/index.php)
-   Multimedia (https://talk.maemo.org/forumdisplay.php?f=32)
-   -   So, what's happening with MPlayer? (https://talk.maemo.org/showthread.php?t=54172)

silviumc 2010-05-29 15:34
Re: So, what's happening with MPlayer?
 
So the media player from N900 supports H.264 base profile only? I have a file that mediainfo reports as:
Format : AVC
Format/Info : Advanced Video Codec
Format profile : Main@L4.0
Format settings, CABAC : Yes
Format settings, ReFrames : 1 frame
Codec ID : H264

The media player from N900 won't play it.

AFAIK, the media player from N900 has a module that takes advantage of the video card to accelerate playback for some codecs (H.264 being one of them). Can't this acceleration be patched into MPlayer as well? Is it closed source or what is the problem? Is this explained somewhere in a wiki page?

clasificado 2010-05-29 16:41
Re: So, what's happening with MPlayer?
 
Quote:
Originally Posted by silviumc (Post 688170)
So the media player from N900 supports H.264 base profile only? I have a file that mediainfo reports as:
Format : AVC
Format/Info : Advanced Video Codec
Format profile : Main@L4.0
Format settings, CABAC : Yes
Format settings, ReFrames : 1 frame
Codec ID : H264

The media player from N900 won't play it.

AFAIK, the media player from N900 has a module that takes advantage of the video card to accelerate playback for some codecs (H.264 being one of them). Can't this acceleration be patched into MPlayer as well? Is it closed source or what is the problem? Is this explained somewhere in a wiki page?
AFAIK, mplayer dont have it (even if everything is opensouce) because its HARD AS HELL.

they have recently released some patches to support the VA-API for Intel and Ati video cards for desktop, some years later.

We need real expert hands to make it possible, and dont expect nothing for the tea time.

usar 2010-05-29 18:06
Re: So, what's happening with MPlayer?
 
I found an interesting documentation about running Maemo 5 on BeagleBoard, and there is an instruction of how to add gsp-dsp support in it, so maybe it's possible to do in original maemo?
http://www.omappedia.com/wiki/Maemo_Getting_Started

TheLongshot 2010-05-30 07:37
Re: So, what's happening with MPlayer?
 
Quote:
Originally Posted by oweng (Post 685279)
Don't give the nokia development team a hard time, they're busy guys - BOTH OF THEM WORK REALLY HARD :D
considering I was talking about mplayer and its future in development, this comment was inappropriate.

I guess I got my answer: don't count on much headway on mplayer.

spanner 2010-05-30 08:10
Re: So, what's happening with MPlayer?
 
Quote:
Originally Posted by silviumc (Post 688170)
AFAIK, the media player from N900 has a module that takes advantage of the video card to accelerate playback for some codecs (H.264 being one of them). Can't this acceleration be patched into MPlayer as well?
The N900 hardware will only accelerate baseline H.264, it's not because the Nokia devs were too lazy to 'patch in' support for Main Profile in Media Player.
So HW acceleration of Main is not going to be possible for mplayer either.

The main reason is that CABAC decoding is CPU intensive and not parallelisable. B-frames add complexity & extra memory requirements too, but I think it's CABAC that's the killer.

edit: Your stream is Level 4 too. That's up to 20Mbit/s, 1920x1080 @ 30fps. If I were the N900's media player I would take a look at it & say 'no thanks' too!


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