Re: [libdv-dev] DV decoding performance

[Vladimir V. <vla...@In...>]

On Tue, 26 Sep 2000, Rodney Schneider wrote:

> Hi!
> 
> I was wondering if anyone had any performance statistics for libdv?  On
> the main page at SourceForge it says:
> 
> "Performance is still in need of major improvement: we are currently
>  several times slower than real-time on typical hardware."
> 
> I had a look at the basic task list, which shows that there are quite a
> few performance enhancements being worked on.  How close to real-time is
> the decoding now, and can anyone give me a basic idea of where the main
> performance bottlenecks are?  On a powerful machine, is currently possible
> to get real time performance?

Hi Rodney,

In my experience with an Athlon 750 and 512MB of ram, it is not possible
to get real-time performance with software only. I can only get between
15-20 fps (and that's the upper limit). However, if the XVideo extension
is used for display (where the YUV->RGB happens on the video card), I can
easily get 35+ fps. Unfortunately, the Xv extension is only available in
XF4, and only on a few cards so far.

	- Vlad