TDA4VM: How does TDA4VM platform encode 4k images (3840X2160)?

xiu xin

Part Number: TDA4VM

Dear exprets,

I can encode 2k images (2560X1440) by modifying some configuration of linux sdk, but when it is set to 4K size, it cannot be encoded. How to modify to support 4k image encoding?

Regards,

Xin

over 2 years ago

0 xiu xin over 2 years ago

Intellectual 280 points

Hi experts,

linux sdk I changed the following file content,

sources/meta-/recipes-oss/kernel/drivers/media/platform/vxe-vxd/encoder/topaz_api.c

// caps->max_height = 2048;

// caps->max_width = 2048;

// caps->min_height = 48;

// caps->min_width = 144;

// caps->max_mb_num = (2048 * 2048) >> 8;

caps->max_height = 7680;

caps->max_width = 4320;

caps->min_height = 48;

caps->min_width = 144;

caps->max_mb_num = (7680 * 4320) >> 8;

When I set it to encode 4k images, the program worked, but the encoding nodes took a long time, as shown below, and there was no encoding output

NODE: A72-2: V4L2EncoderNode: avg = 100160 usecs, min/max = 100046 / 101538 usecs, #executions = 198

0 Sarabesh Srinivasan over 2 years ago in reply to xiu xin

TI__Mastermind 21000 points

Hello,

What SDK version are you on?

Thank you,
Sarabesh S

0 Sarabesh Srinivasan over 2 years ago in reply to xiu xin

TI__Mastermind 21000 points

Hi,

In the datasheet, in Section 1 Features under Video acceleration:

4k encoding is not supported. You can set those parameters for 4k but the timing requirements won't be met because the CODEC is not equipped to handle that high of a resolution.

Thank you,
Sarabesh S

0 xiu xin over 2 years ago in reply to Sarabesh Srinivasan

Intellectual 280 points

Hi Sarabesh S,

SDK version is 8.05, SOC is J721e.

regards,

xin

+1 Sarabesh Srinivasan over 2 years ago in reply to xiu xin

TI__Mastermind 21000 points

Hi Xin,

The J721e SOC's CODEC IP does not support 4K encode. The max encoding resolution is one 1920x1080p stream, as per the datasheet (Section 1 Features under Video Acceleration) I posted in the previous reply.

Here is the link to the datasheet: https://www.ti.com/document-viewer/tda4vm/datasheet

Regards,
Sarabesh S

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TDA4VM: How does TDA4VM platform encode 4k images (3840X2160)?