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DM8127 - H.264 Low Latency Encoding

Alex Kozhinov
Prodigy 20 points
Other Parts Discussed in Thread: TMS320DM8127

Dear all,

The compyny I working on is interested in DM8127 processor for further products. We a looking now at TMS320DM8127 Camera Starter Kit for first developing tests.

We are very interesting in latency reduction in the following chain: Camera --> ISP --> Encoder --> Network --> Decoder --> Display


According to http://www.ti.com/lit/wp/spry301/spry301.pdf there are low latency FPV Drone applications possible, if we would split each frame in slices.

In particular example the latency reduction is up to factor 3 (from 120 ms to 40 ms).

Therefore following questions to this publications and especially to DM8127:

  1. Does DM8127 supports frame slice encoding?
  2. Which developing software do we need for slice encoding and does it included in TMS320DM8127 Camera Starter Kit?
  3. Can the produced bitstream be decoded on other devices than DM8127 and under what conformity conditions?
  4. Under frame in to slices splitting condition: Will be the encoding Interlaced or Progressive?
  5. Are the any real tests for TMS320DM8127 Camera Starter Kit  or comparable system with latency information provided?

Many thanks,

Alex

  • 0
    Mastermind 8775 points

    Dear Alex,

    Thanks for your question. Your answers are below:

    Alex Kozhinov said:
    1. Does DM8127 supports frame slice encoding?

    Yes, it supports slice encoding. You will get all the information in the H.264 Encoder User Guide.

    Alex Kozhinov said:
    2. Which developing software do we need for slice encoding and does it included in TMS320DM8127 Camera Starter Kit?

    IPNC-RDK -3.9.2 

    Alex Kozhinov said:
    3. Can the produced bitstream be decoded on other devices than DM8127 and under what conformity conditions?

    Yes, it can be decoded on other devices.

    Alex Kozhinov said:
    Under frame in to slices splitting condition: Will be the encoding Interlaced or Progressive?

    Yes, both interlaced & Progressive are supported. You can get the detailed information in the H.264 Encoder User Guide.

    Alex Kozhinov said:
    Are the any real tests for TMS320DM8127 Camera Starter Kit  or comparable system with latency information provided?

    Data sheet of the Encoder gives the performance numbers. Userguide tells how to get the latency info from these numbers. So you should be able to compute the latency for you application based upon slice rate.

  • 0 in reply to Prashanth Kumar15
    Prodigy 20 points

    Dear ,

    Thank you for detailed information.

    Where can I find H.264 Encoder Guide for TMS320DM8127?

    Best regards,

    Alex

  • 0 in reply to Alex Kozhinov
    Mastermind 8775 points
    Dear Alex,
    You can find it here. git.ti.com/.../docs

    Also the same package comes along with IPNC-RDK