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Text overlay on captured video stream

Luca Marzocchi
Prodigy 110 points
Other Parts Discussed in Thread: TMS320DM368, TVP5158

Hi guys i've built a custom TMS320DM368 board using TVP5158 for capturing and encoding in H264 4 video stream D1 PAL ..

Our customer requires text overlay (with some data...like speed, RPM and so on...) on the captured video.

We haven't video output so i think we can't use hardware OSD built on DM368.

do you think it Is possible to use DMAI API'S to fullfill this requirements?

Thanks!

  • 0
    TI__Mastermind 19985 points

    Hi,

    The hardware OSD on DM368 does not have a path back to the memory. This means even if you are not using video output, you can not bring the blended graphics or text on the video frame, back to the memory for further use.

    You would have to use Software OSD implementation. One such implementation is available in the IP Camera reference design kit from TI on DM368. This can be used as reference for your implementation. Else you can use some sort of EDMA based implementation directly on your own.

    Regards,

    Anshuman

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

  • 0 in reply to Anshuman Saxena
    Prodigy 10 points

    Hi,

     

    I have the same problem - with overlay embedded into video stream.

    I was trying to find sources on TI site for IP-cam without success.

    Is it downloadable from TI site?

     

    regards

  • 0 in reply to Anshuman Saxena
    Prodigy 50 points

    Hi

    can I use TMS320DM368 for text overlay ,graphic overlay  on captured video stream ,using software OSD.

    As DM816x/AM389x Evaluation Module is obsolete,can you  suggest any alternative board. my task is basically to implement object recognition and tracking ,text and graphic overlay on captured video stream.

    thanks