VPU Bitrate changes on the fly

[jparrish88]

Could someone throw out ideas on how to change the bitrate of an H264 video encoding on the fly?

I believe that, the bitrate configuration is fixed at launch for the VPU.

Does anyone have suggestions on how to work on this?

[joanxie]

mx6 vpu can support it. refer to the vpu api,

bitRate is the target bit rate in kbps. If 0, there is no rate control and pictures are encoded with a quantization parameter equal to quantParam in EncParam.

for example,

+                             { 

+                                             int bitrate = 1000; 

+                                             if (frame_id==100) 

+                                                             vpu_EncGiveCommand(handle, ENC_SET_BITRATE, &bitrate); 

+                             } 

                               ret = vpu_EncStartOneFrame(handle, &enc_param);  

[gusarambula]

joanxie , would you please help us with this question?