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DM36X VPFE: to resize a copy of the captured video

Jing Lee79304
Prodigy 180 points

I want to send the capture video to H.264 encoder and at the same time, send a copy back to IPIPE resizer. Then the resized data will be send to (another) H.264 Encodes as well. Is that posible and how to do this?

 

  • 0
    TI__Mastermind 19985 points

    Hi,

    Jing Lee79304 said:

    I want to send the capture video to H.264 encoder and at the same time, send a copy back to IPIPE resizer. Then the resized data will be send to (another) H.264 Encodes as well. Is that posible and how to do this?

    The resizer on DM36x has dual output port. You dont need to resend the data to the resizer again. You can configure the resizer to send out two resolutions that can go to two different H.264 encoders. Please refer to the DM36x VPFE user guide for more details.

    Regards,

    Anshuman

    PS: Please mark the post as verified, if you think it has answered your question. Thanks.

     

     

  • 0 in reply to Anshuman Saxena
    Prodigy 180 points

    Hi Anshuman,

    Thanks for your response. I did read through the VPFE user guide and some threads in this forum but I still have the following questions.

    1. Where can I get the VPFE programmers guide? Especially I want to know the parameters setting of the ioctl() call.

    2. If the input is YUV422 and I want the dual YUV420 outputs with different resolution. Can the resizer do this in the chain mode?

    3. Can resizer perform sub-window (of the source) resizing? I notice there are some registers, such as SRC_VPS, SRC_VSZ, SRC_HPS and SRC_HSZ, which seem possible to do this.

    4. I know the maximum output width of RSZA is 2176 pixels and RSZB is 1088. Is the output image size (RSZA + RSZB) limited to 5MP?

    5. Via figure 4-37 IPIPE data flow of VPFE user guide, there are only one H-resizer and two V-resizers. I am curious how dual resizing is done by one H-resizer.