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3086 Discussions

Question about CQP Encoding

Joyah
Beginner
‎05-14-2012 01:38 AM
911 Views
Hi there,

My question is, can I perform a "Dynamic QP Change" at CQP Encoding Mode, as the similarity of "Dynamic Bitrate Change" in CBR and VBR mode? If I can, how to achieve that?

Thanks,
Joyah


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Nina_K_Intel
Employee
‎05-14-2012 09:59 AM
911 Views
Hi Joyah,

Using CQP mode you can have dynamic change at any frame using regular way of specifiying per-frame QPs: fill mfxEncodeCtrl structure and pass it to EncodeFrameAsync. Here is an excerpt from the Media SDK manual:


Description

The mfxEncodeCtrl structure contains parameters for per-frame based encoding control.

Members

QP

If nonzero, this value overwrites the global QP value for the current frame in the constant QP mode.


Regards,
Nina
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