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video stream of MPEG4 storage HD on dm355 EVM

stanlerwang
Intellectual 510 points

hi,all

    condition:

 

            CIF:352*288,every pixel is 16bits

            every row expands 720 pixels,row num do not chang.so one frame picture includes 1728*288 datas.

           4 way CIF is D1,25~30frames every second,support I,P frame on vpfe on dm355;

           my question is:on HD how long storage I frame?

 

 

 

  • TI__Mastermind 41665 points

    I am not sure what you mean by

    stanlerwang said:
    on HD how long storage I frame?
    , are you asking about how long an I frame takes to process in the MPEG4 encoder or how much space the frame will take up in memory after processing? In either case the answer will vary based on what is in the frame, there are performance figures in the codec datasheet that discuss such things, if you could clarify your question we can find an answer.

  • TI__Mastermind 37340 points

    Since there is no B-frames involved, there is no need for decoder to hold on to I-frame, since it should be processed right away.  How fast depends on size of frame and speed you are running processors at, but the codec data-sheet should give you a good idea of MIPs required for different resolutions.