TDA4VM: A question about the format of CSIRX output data

Tao Xie

Part Number: TDA4VM

Hi, experts

I have a camera that outputs data in YUV422 format.

When I configured the output data format of CSIRX to FVID2_DF_YUV422I_YUYV, I found that the data was correct.
However, I see that H264 encoding seems to require data in NV12 format.

So, my question is, can I configure the output format to FVID2_DF_YUV420SP_UV when I collect? This can save additional formatting steps.
So far, when I configure like this, I can collect data, but the data parsing is incorrect.

Best regards,

Tao

over 2 years ago

0 Brijesh Jadav over 2 years ago

TI__Guru**** 478015 points

Hi Tao,

No, capture does not support NV12 or YUV420SP output format directly. After capturing YUV422 ie YUYV format, you need to use other modules to convert this format into NV12/YUV420. You can either use LDC module in VPAC or DSS in m2m mode for this conversion.

Regards,

Brijesh

0 Tao Xie over 2 years ago in reply to Brijesh Jadav

Intellectual 435 points

Hi，Brijesh

Thank you for your reply. I have another question that I would like to ask by the way.

Brijesh Jadav said:
You can either use LDC module in VPAC or DSS in m2m mode for this conversion.

Can the DSS module modify the resolution while converting formats? For example, downsampling 3840*2160 resolution data to 1920*1080 resolution.

The reason I want to do this is that the video accelerator does not support encoding at 3840*2160 resolution.

Best regards,

Tao

+1 Brijesh Jadav over 2 years ago in reply to Tao Xie

TI__Guru**** 478015 points

Hi Tao,

Yes, DSS does support both downscaling and format conversion in one go..

Rgds,

Brijesh

Processors

Processors forum

TDA4VM: A question about the format of CSIRX output data