+ Reply to Thread
Results 1 to 5 of 5

Thread: Video overlay / mixing separate video signals

  1. #1

    Default Video overlay / mixing separate video signals

    Here is something I want to try.

    I have a small video camera (outputing regular color composite video) that I can install on a robot/vehicle/wall/whatever. I would like to use the Prop's composite video output to overlay some numeric/textual information over the video that the camera outputs. Like time, heading, altitude, etc.

    1) is this even possible? I suspect there will be some challenges involving lining up the video synchronization.

    2) what would be the basic concepts of operation? Would I have to isolate the sync signal from the camera, inject it into the prop, then muddle around with the prop TV driver? or is it something more fundamental? or perhaps simpler? I am only vaguely familiar with how a TV signal is put together. Thankfully, I just bought a PropScope and have been spending hours dissecting various signals Thanks to Parallax for putting Propscope on the daily deal last week!

    3) What external circuitry would be required? Could it be built out of parts from a very well stocked parts bin, or would I have to buy some specialized hardware?


    Thanks in advance

    Luke

  2. #2

    Default Re: Video overlay / mixing separate video signals

    I think the Propeller Backpack is what you want. Can overlay text on top of video. No need to put composite out of the Prop, just numbers.

    http://www.parallax.com/StoreSearchR...2/Default.aspx

    Jim
    I have three propellers

  3. #3

    Default Re: Video overlay / mixing separate video signals

    I use a prop backpack for doing this. I have a camera connected to a backpack and the backpack output to a wireless transmitter.
    The default firmware for the backpack doesn't do overlay but the firmware is available on the backpack webpage.

  4. #4

    Default Re: Video overlay / mixing separate video signals

    Quote Originally Posted by Timmoore View Post
    I use a prop backpack for doing this. I have a camera connected to a backpack and the backpack output to a wireless transmitter.
    The default firmware for the backpack doesn't do overlay but the firmware is available on the backpack webpage.
    That's pretty much exactly what I plan to do... I have a super-compact 5 watt 900MHz band amateur TV transmitter that I intend to embed, along with the camera, into various remote-controlled prop-driven evil plans of mine.

    Good thing I just bought 3 prop backpacks last week when they were 40% off!!

    Thanks guys, any further suggestions keep 'em coming

  5. #5

+ Reply to Thread

Similar Threads

  1. Video Overlay
    By aeading in forum Propeller 1 Multicore Microcontroller
    Replies: 43
    Last Post: 01-01-2012, 09:42 AM
  2. Video overlay
    By Delus in forum Propeller 1 Multicore Microcontroller
    Replies: 10
    Last Post: 12-08-2007, 03:38 PM
  3. Replies: 19
    Last Post: 11-04-2006, 12:05 AM
  4. Video Overlay? Possible?
    By Evan in L.A. in forum Propeller 1 Multicore Microcontroller
    Replies: 5
    Last Post: 10-08-2006, 01:46 AM
  5. Video Overlay
    By MrTrick in forum Propeller 1 Multicore Microcontroller
    Replies: 4
    Last Post: 06-07-2006, 12:18 AM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts