IMX6 VPU Encode Setting

leigeng — Wed, 29 Mar 2017 07:34:58 GMT

Hi：

I'm using i.mx6 VPU to encode YUV420 with H.264.

For Static scene, I-Frame is twenty times the size of P-Frame.

How can I to control I-Frame eight times the size of P-Frame for static scene ?

For some reason, bitrate and GOP size are fixed ( e.g. Bitrate: 3Mbps GOP: 30).
To meet the goal, is there any other parameter to set ?

Last time, I didn't get a good answer from community.

Can anybody help me ?

Thanks and best regards

Re: IMX6 VPU Encode Setting

joanxie — Thu, 06 Apr 2017 08:06:12 GMT

unfortunately, I don't think we have better solution if bitrate is constant, if you use VBR, you can change the QP to control it.