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How can I capture the output video and send to a network PC in DM355 EVM?

ouyang
Prodigy 60 points

Hi,Everyone!

How can I capture the output video and send to a network PC ? For example, when I run the interface demostration program in the DM355 EVM, how can I capture the finally video (contains the On Screen Display video ) and send to a remote network PC? I have read almost all the related documents  contained on the DM355 EVM disks but can find no solution.  Can anyone give me a prompt or a demostration program?

Thanks very much!

 

  • 0
    TI__Mastermind 41665 points

    The way that the OSD hardware in the VPBE was designed the final OSD mixed output is only available on the outgoing end of the VPBE, in otherwords there is no path for the video containing the OSD to get back into DDR, so it is not possible for the DM355 to send the OSD mixed video output to the network unless the VPBE output is taken in by another processor or looped back into the VPFE externally.

    This being said, if you can deal without the OSD or implement OSD in software than you could use software like that which is included with the IP Netcam reference designs to stream video to a networked PC.

  • 0 in reply to Bernie Thompson TI
    Prodigy 60 points

    Hi,Bernie Thompson!

    Thanks for you kindness reply!

    Refer to the  designs in 《IP Netcam Reference Designs》, all the solutions have only one DM355 processor,how can they to do the On Screen Display?  I believe there may be some meanings to caputer the finally video mixed with OSD,but I can't find it.

  • 0 in reply to ouyang
    TI__Guru 64480 points

    ouyang said:

    Refer to the  designs in 《IP Netcam Reference Designs》, all the solutions have only one DM355 processor,how can they to do the On Screen Display?  I believe there may be some meanings to caputer the finally video mixed with OSD,but I can't find it.

    As Bernie indicated, the OSD functionality is part of the Video Port Back End (VPBE) which drives the video output port of the DM355.  On the Base IPNC reference design, this would be available on the Video output.  The DM355 does not have a way to bring the mixed video back into SDRAM that could be encapsulated in a network packet and sent over the network interface.

  • 0 in reply to ouyang
    TI__Mastermind 41665 points

    ouyang said:
    Refer to the  designs in 《IP Netcam Reference Designs》, all the solutions have only one DM355 processor,how can they to do the On Screen Display?

    The IP netcam reference design flyer does not appear to make any mention of OSD support, based on the hardware limitations I imagine there is either no OSD with these designs or the OSD is implemented in software (for the display over the network), unfortunately I have not had a chance to work with these camera designs to say one way or the other, but I can say that it would be virtually impossible for them to use the hardware OSD built into the VPBE.