[Open-graphics] decoding video in real-time

André Pouliot andre.pouliot at gmail.com
Tue Feb 20 19:36:36 EST 2007


Peter TB Brett wrote:
> On Tuesday 20 February 2007 10:52:46 Dieter wrote:
>   
>>> 24Gb torrents that are stated to be dumps of HD-DVDs and
>>> BlueRay discs...
>>>       
>> Peter's AMD64 3200+ can't decode mpeg4 in real time. (bitrate?)
>> Even Attila "decode it in software" Kinali admits that a
>> AMD64 3700+ isn't fast enough to decode H.264. (bitrate?)
>>
>>     
>
> If anyone else wants to try the particular video in question, it's the HD 
> version of the Blender Foundation's "Elephant's Dream" project, in case it's 
> a peculiarity of that particular file.
>
> As I may well have a broken media player/X server set up, I'm kinda loathe to 
> be held up as a benchmark so frequently. ;)
>
> OTOH, I'm getting a new laptop soon(ish), which is probably going to be Intel 
> Core 2 Duo T5500 with Intel GMA 950 graphics, so I'll try again with that and 
> let everyone know.
>
> Peter
I tested the HD version of elephant dream on my pc. It work well with 
only software decoding. The cpu usage was around 50% with low of 40% and 
max of approximately 80%. A normal mpeg on my computer use ~ 25% at 
720x480 resolution.

The pc spec are the following : athlon 2GHz, geforce2mx. The video was 
played using mplayer on Gentoo with the nvidia binary driver.

As I can see it playing HD video on a modern computer shouldn't be a 
problem except if there is crypto present in the stream.

André


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