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xu_w_1
Beginner
‎06-22-2017 01:40 AM
326 Views

hi there,

Could you please tell me how to reset the value of nal_reference_idc?

I've noticed that the value of nal_reference_idc was 1 in IDR frame after the operation of sample_encode H264,

but how can I make it as 3 instead of 1.

Kind regards

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Stav_S_Intel
Employee
‎06-25-2017 12:29 AM
326 Views

Hi,

Can you specify on what you are trying to change exactly? i tried to look at the demo and not sure i understood. 

did you mean max_num_ref_frames? 

If so, it can be  controlled by mfxVideoParam-> mfxInfoMFX-> NumRefFrame

 

Regards,

Stav

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xu_w_1
Beginner
‎06-25-2017 07:55 AM
326 Views

hi,
The nal_ref_idc is the priority of a NAL unit.For example the data like "......00 00 00 01 27......"means a start of a SPS NAL.

The data 0x27 means the priorfy of the NAL is 1(the second and the third bit of 0010 0111b is 01b). What i want to do is to change this value to 3(11b).

Regards,

Xu w.

 

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Stav_S_Intel
Employee
‎06-26-2017 04:49 AM
326 Views

Hi,

OK, i understand.

 I am afraid you can not change to value of nal_ref_idc via MSDK API. 

Regards,

Stav

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