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Maximum number of encoder instances and Maximum streams possible

Vamsi
Prodigy 110 points

Hi all,

      We are working on IPNC DM368 Appro v2.60 . we would like to know the maximum possible encoder streams we can get from DM368. As per the documentation we can have 4 encoder streams .

1) Is it possible to increse this number or is this a limitation of hardware.

2) How many instances of H264Enc, JpegEnc can be used in parallel.

3) we are planning to use all 4 Capture streams and feed these capture streams to both H264Enc and JpegEnc  i.e., in effect we are expecting 8 encoder streams (4 H264 + 4 Mjpeg). Is this possible on DM368? Are there any constraints we should be aware of ? We are using 256M memory.

can you plase  share youtr thought on our usecases.

Vamsi

  • 0
    TI__Genius 11000 points

    Hi,


    Can you please tel us the frmaerate and resolution you are planning to run

    Regards,

    Raghu

  • 0 in reply to Raghu Kudva
    Prodigy 110 points

    Hi Raghu,

      Thanks for coming back.

       We are planning to set the sensor to 4M (2144 x1944)  and get 4  capture streams of sizes,  4M(2144 x 1936), 2M(1424 x 1296 ), 1M(1024 x 960) , VGA stream .

    The framerates we are aiming is no less than 10FPS. 

    Thankyou ,

    Vamsi

  • 0 in reply to Vamsi
    Genius 3510 points

    Hello, Vamsi!

    We are get 12 FPS on DM368 with stream 4 Mpx (2368x1728), stream send via RTSP and otput on analog monitor.

  • 0 in reply to Kirill Brilliantov
    TI__Genius 11000 points

    Vamsi,

    For 10fps, this might be on the EDGE, 8-9 fps is definitely possible for all 4 streams.

    If you have the width limited to 2048, then you can achieve 10fps

    Regards,

    Raghu

  • 0 in reply to Raghu Kudva
    Prodigy 110 points

    Hi Raghu,

       Thanks for the prompt response. its good to know that we can achieve 8 streams from DM368.

    I am already experiencing the drop in frame rate when I increased the stream count to 3.

    Earlier we had a sensor configuration of 2144 x1944  and had 2 captre streams 2M(1424 x 1296 ), 1M(1024 x 960) and we achieved a  frame rate of 16 fps.

    Now I am trying to increase tht capture streams to 3 with the same sensor configuration and capture streams of 2M(1424 x 1296 ), 1M(1024 x 960), VGA  stream. The frame rate went down to 8fps.

    Is this down to the fact that there can be only 2 resizer blocks available in parallel and the for the third capture stream the output of one resizer is fed into another resizer?

    Can you share me any configurations/tips to get higher frame rate atleast with 3 streams for the above configuration.

    Can you explain me the downside of having the sensor width set to 2144 rather than 2048, and if there anything to get higher frame rate with 2144 x1944 sensor config.

    Thanks in advance,

    Vamsi