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maemo.org - Talk (https://talk.maemo.org/index.php)
-   Nokia N900 (https://talk.maemo.org/forumdisplay.php?f=44)
-   -   can n900 play mkv files? (https://talk.maemo.org/showthread.php?t=32731)

access 2009-10-13 18:42
Re: can n900 play mkv files?
 
Quote:
Originally Posted by Bratag (Post 345616)
Really?

I have seen several videos showing the n900 playing 720p without issue.

http://www.youtube.com/watch?v=EYgiO...layer_embedded

This is a fairly nice example of 720x400 being played at a respectable 4.2Mbps.
720p means that the vertical resolution is 720px, so 720x400 != 720p, it'd be more like 400p. ;)

I think 720p and especially 1080p content would have to be really low complexity and bitrate to play back on a 600 MHz Cortex CPU/DSP… and the decoder would have to be optimised for NEON or something similar.

ysss 2009-10-13 18:42
Re: can n900 play mkv files?
 
@bratag: 720p means 1280x720 or so.

Here's an older thread about running (non-mkv specific) high def stream on cortex A8 devices:

http://talk.maemo.org/showthread.php?t=30917

Bratag 2009-10-13 18:46
Re: can n900 play mkv files?
 
Quote:
Originally Posted by ysss (Post 345625)
@bratag: 720p means 1280x720 or so.
Ahh my bad - was thinking 720 pixels - not 720p. New baby making brain drip out ears.

Still a damn nice vid though :)

mrlanrat 2009-10-13 18:50
Re: can n900 play mkv files?
 
Quote:
Originally Posted by Bratag (Post 345616)
This is a fairly nice example of 720x400 being played at a respectable 4.2Mbps.
720x400 is not 720p.
720p is defined as 1,280x720.
see: http://en.wikipedia.org/wiki/High-de...ay_resolutions
In HD the resolution is measured in the number of vertical pixels.

EDIT: Opps, Someone beat me to it ;)

pelago 2009-10-13 21:29
Re: can n900 play mkv files?
 
It's a shame N900 if can't play existing 720p vids without down-converting.

bocaJ 2009-10-13 22:01
Re: can n900 play mkv files?
 
Quote:
Originally Posted by pelago (Post 345754)
It's a shame N900 if can't play existing 720p vids without down-converting.
So it couldn't play the sample videos that were posted?

Vodrin 2009-10-13 22:32
Re: can n900 play mkv files?
 
Quote:
Originally Posted by pelago (Post 345754)
It's a shame N900 if can't play existing 720p vids without down-converting.
It is a bit of a shame but personally I'd down-convert to native res for battery and space improvements.

pelago 2009-10-14 09:50
Re: can n900 play mkv files?
 
Quote:
Originally Posted by bocaJ (Post 345779)
So it couldn't play the sample videos that were posted?
I don't know, as I don't have an N900. I was going by yerga's comment:
Quote:
Originally Posted by yerga (Post 345597)
Yes, Matroska isn't supported out of the box. The media player doesn't even index these files.

And apart from it, 720p could be possible with some highly optimized codec, but it won't be easy.
I haven't found any 720p video that the N900 plays.


VLC and mplayer try to play the 720p videos, but they are very slow and completely unwatchable.
Has anyone else tried the sample files to get a second (or third) opinion?

NZtechfreak 2009-10-14 10:15
Re: can n900 play mkv files?
 
It should be possible, my i8910, which has the same hardware plays 720p video without a problem (and many 1080p videos also). Heck, the i8910 can record in 720p, so the hardware here really shouldn't be the limiting step in the equation...

zaheerm 2009-10-26 16:04
Re: can n900 play mkv files?
 
To get the n900 media player to recognise mkv files, you need to do as root after installing the extra gstreamer packages:

tracker-register-mimetype -c Videos -a video/x-matroska

I guess someone should create a meta package for all the container types not supported and have this kind of command added to the postinstall of the package


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