topic Re: Help needed on imx6 vpu lib usage code in i.MX Processors

Help needed on imx6 vpu lib usage code

pradeepr — Thu, 13 Feb 2014 06:03:58 GMT

I tried running the imx6 vpu library code got from net @ https://github.com/ahmedammar/imx-testing-apps-misc/blob/master/libvpu_encode.c

From the prints I see that first I frame seems to be of size ~ 14K and successive P frames are of size ~15K. Is this possible?

It seems there is some issue. Is the vpu lib usage wrong or the library itself is problematic? Can anyone please help?

Re: Help needed on imx6 vpu lib usage code

joanxie — Wed, 05 Mar 2014 08:05:15 GMT

where did you get this source code? in fact, current bsp has the vpu api source code, you can use that directly, the path is

<ltib_dir>/rpm/BUILD/imx-lib-11.11.00/vpu.

Re: Help needed on imx6 vpu lib usage code

pradeepr — Wed, 05 Mar 2014 08:22:41 GMT

Hi,

I am using the vpu library path mentioned by you only. What I meant was that from the above link I got source code for an application which uses the vpu librray APIs for H264 encode. With that I am seeing the issue.

Re: Help needed on imx6 vpu lib usage code

YixingKong — Thu, 20 Mar 2014 08:33:36 GMT

Pradeep

Had your issue got resolved? If yes, we are going to close the discussion in 3 days. If you still need help, please feel free to reply with an update to this discussion.

Thanks,

Yixing

Re: Help needed on imx6 vpu lib usage code

pradeepr — Thu, 20 Mar 2014 09:00:03 GMT

Hi,

I resolved the issue by allocating more frame buffers and sub-sampling buffers with proper frame indexes to VPU library. I got this fix from another librray "libvpuwrapper" which is a wrapper over Freescale VPU library.

Thanks,

Pradeep

Re: Help needed on imx6 vpu lib usage code

chuck1 — Wed, 01 Apr 2015 04:31:29 GMT

Pradeep,

I'm having a similar set of issue—please see my post here: i.MX6 VPU H.264 Encoder Quality Issues—would you be so kind as to post your specific solution set?

Thank you,

-Chuck