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Help with device selection for video application

TIguru
Expert 1430 points

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Team,

   I have a customer with the following requirements:

 

HD Video in (from either a HDMI or HD-SDI Chip) upto 1080p30

Scale down to selectable size.  Most likely 480p~ish or a 16:9 equivalent of 480p

De-interlace, before or after scaling.

Send out data over USB 2.0 to MAC/PC  (480p is approx. 54MB/s)

 

To get the data rate down we might consider the following:

4:2:2 to 4:2:0 conversion

JPEG?

Some other light compression, that is easy for a PC to decode.

I am thinking this could be done with a DM6467, but wanted to check with you and make sure this is a good choice.  Please let me know if you could think of a better solution for this application.  In advance, thank you for your help.

 

~ee


  • 0
    TI__Genius 14405 points

    DM6467 is probably one of the better fit ones, however I'd worry about the USB part of this application.

    480P should be 720x480x2x30 = 20MB/s, right? Even 4:2:0, 75% of 422; might be high for the USB. I'd say compression is definitely needed.

    I am assuming when you mentioned "de-interlace", you have interlaced data instead of progressive data. :)

  • 0 in reply to Paul.Yin
    TI__Expert 8260 points

    You can consider DM368 also.

    Note that if de-interlacing is important, then DM6467 might be better. The one in DM36x is very simple one, so quality performance is not great.

     Regards, Srirami.