Group:  English: Entertainment ยป microsoft.public.windowsmedia.sdk
Thread: performance

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performance
visuall 04.07.2007 11:22:02
Hello,

In Media Encoder there is performance tab. Here there are slide bars where
the user can adjust performance and quality. Does anyone know how these same
performace settings can be set via windows media format SDK. It appear that
they are related to the windows meadia 9 codecs.

Regards,
--
Nick Kichukov,
project manager,
eConsulting LLC
RE: performance
KBoek 05.07.2007 12:54:02
I wonder if this is a direct setting the SDK. Since this is a general setting
for all encoder sessions, I'd rather say that this influences the encoder
profile. The help document for WM Encoder says that this only works with the
WM9 video codec, so possibly it's something within the codec settings.

If there's a setting that actually represents this, I'd have a look in the
Windows Media Format SDK, which the WM Encoder application actually is based
upon.

regards,
Karel

"visuall" wrote:

[Quoted Text]
> Hello,
>
> In Media Encoder there is performance tab. Here there are slide bars where
> the user can adjust performance and quality. Does anyone know how these same
> performace settings can be set via windows media format SDK. It appear that
> they are related to the windows meadia 9 codecs.
>
> Regards,
> --
> Nick Kichukov,
> project manager,
> eConsulting LLC
Re: performance
Vegethalia <vegethalia[ at ]gmail.com> 09.07.2007 07:39:58
[Quoted Text]
> > In Media Encoder there is performance tab. Here there are slide bars where
> > the user can adjust performance and quality. Does anyone know how these same
> > performace settings can be set via windows media format SDK. It appear that
> > they are related to the windows meadia 9 codecs.
> >

Hi!

The performance tab is a 'direct' traslation of the Video Complexity
used by the encoder. You can set this value programatically by using:

hr=m_pEncoder->put_VideoComplexity(WMENC_COMPLEXITY_LEVELXX);

where XX is 0, 20, 40, 60, 80, 100.

A complexity of 0 greatly improves the performance of encoding
decreasing a bit the image quality.
A complexity greater or equal than 80 increases DRASTICALLY increases
the cpu usage and even with fast machines you may experience poor
framerates when encoding from a live source.


Vegethalia
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