Graphical A/V Switcher
I've been searching for quite a while for a solution to my request. I want to make an on-screen digital A/V switcher using some kind of microcontroller, and the Propeller seems like it is capable.
This switch would need to take 4-8 inputs of component video and analog audio and somehow create a graphical (on-tv) interface to switch between the A/V inputs.
Does this seem possible? Hopefully you get what I'm trying to make here, if you don't, do tell.
Thanks!
-Skyler
This switch would need to take 4-8 inputs of component video and analog audio and somehow create a graphical (on-tv) interface to switch between the A/V inputs.
Does this seem possible? Hopefully you get what I'm trying to make here, if you don't, do tell.
Thanks!
-Skyler
Comments
The Prop will do that easily.
Most high end commercial AV switcher units use high quality relay's to do the actual switching.
So do not feed the Audio and Video signals thru the Propeller .. that is a no no.
Use VB or Delphi to create the application..
Saw an application the other day that was developed by PowerBasic for Windows.
Looks pretty good as well ... fast .. www.powerbasic.com
Ronald Nollet Australia
Graham
Good suggestion Graham .. if Skyler wants to use a little LCD screen .
If he is going to use a PC with a monitor I personally would not brother.. too much stuffing around.
But as a self contained (totally standalone solution) the Prop would be awesome as it has Video capability.
Ronald Nollet Australia 40 C here now its Hot Damm Hot
I forgot to mention that I'll be using this on a pretty large plasma, so it might be hard to make this look good. I hadn't thought about a relay, I'll look into it.
Thanks [noparse]:)[/noparse]
-Skyler
The computer interface would be ultra simple in Realbasic, but my guess is you are trying to do this while watching the TV, with minimal external hardware. The Prop could sit in a small box with the relays, 8 inputs from vid, 16 inputs from audio(8 stereo), 2 audio outs and 1 vid out from the relay matrix, one vid out from the Prop for graphics/menu.
Post Edited (originator) : 2/4/2007 9:31:29 PM GMT
One issue about overlaying on component video is that the overlay signal will be either green, red, or blue depending on what signal you overlay on. You may also be forced to overlay on the green signal since I believe that signal carries the video sync information.
Harrison
I don't need to do anything with overlay, although it would be pretty cool.
What I'm asking now, really, is how well do you think I could get the graphics looking? Also, at what resolution can the propeller output?
The graphics will be marginal in my opinion compared to your TV's built in graphics "look and feel". Graphics on a PC could be much slicker, but then requires a PC sitting around at all times. Actually, I wouldn't even do the graphics on TV, I'd use a box with all the i/o's, with an LCD. You could have several cursor buttons, a write button, input your device names in the LCD menu, scroll through on the LCD and choose the device. This way, you elminate a step to click over to a "menu" channel to select inputs.
To get fancy, add an Xbee tranceiver to the remote and run it wirelessly to the relay board, adds cost, and hardware, but much cooler system.
Post Edited (originator) : 2/4/2007 10:51:22 PM GMT
I'll keep looking into it, I might just buy an integrated microITX board and take that route, just for the graphics.
-Skyler