IMX6.Q VPU encode double video

richarddestiny · ‎01-20-2016

Hi,ALL

I'm working on IMX6Q kernel:3.10.17

I have double camera ,there are DVP and MIPI port, output ：1280*1080 25 FPS and 1280*960 25FPS

the problem is : the vpu encode is not smooth enough, some time ,encode a frame need more then 40ms, how can i fixed this problem?

how about change the vpu input clk? or change the encode bitrate_level ? but, I didn't get the interface to change the bitrate_level。。

anyone can help me?

thank you very much!

igorpadykov · ‎01-20-2016

Hi Richard

reason may be that dual (1280*1080 25 FPS & 1280*960 25FPS)

encode is close to VPU performance max. limit 1080p@30fps, this

is described on p.6 presentation

so one can test this case with unit tests mxc_vpu_test

if perfomance is insufficient, decrease fps.

For bitrate seting refer to sect.3.2.2.11 EncOpenParam

attached VPU Programming Manual.

Best regards

igor

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