Media (Intel® Video Processing Library, Intel Media SDK)
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The Intel Media SDK project is no longer active. For continued support and access to new features, Intel Media SDK users are encouraged to read the transition guide on upgrading from Intel® Media SDK to Intel® Video Processing Library (VPL), and to move to VPL as soon as possible.
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3058 Discussions

Question about CQP Encoding

Joyah
Beginner
‎05-14-2012 01:38 AM
462 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
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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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