Re: [Avid-L2] OT: Apple mini display port to a composite analogue video feed?

Sounds like a lot of hoops to jump through. Here's something I have here
that works:

mini display port -> HDMI -> cheap HDMI to analog box -> composite




On Sun, Jul 14, 2013 at 10:31 PM, John Moore <bigfish@pacbell.net> wrote:

> **
>
>
> I thought I could take my mini display port to DVI adapter and hook that
> to my apple DVI to composite video/SVideo adapter and feed my analogue TV.
> Turns out the DVI to Comp Video/Svideo has the necessary "C1 thru C" Pins
> that carry the analogue R,G,B and Hsync pins but the mini display port to
> DVI is digital only and doesn't even have holes for those pins, only the
> fat center blade for analogue ground it there. Of course I found this out
> after bending the pins on the Comp video adapter cable. ;-( I pulled
> apart the cable and it's got a lot of little circuitry that must take the
> component video and convert it to composite and Svideo.
>
> Now I'm thinking I could take a mini display port to VGA cable out of the
> mac and take a VGA to DVI adapter that would have the necessary "C1 thru
> C4" pins and then I could plug the DVI to Comp Video/SVideo adapter into
> that. Any reason to think a DVI to VGA adapeter wouldn't work in reverse?
> I figure those are all just pin to pin connections but I'm not positive.
>
> I have found some more elaborate boxes on line that will pass thru a VGA
> signal and extract the comp video and S/video but they look to require USB
> power which the apple adapter doesn't require. I wonder where the apple
> comp video adapter gets it's power from and if that power would be
> interrupted if I use the VGA to DVI adapter. Any thoughts?
>
>
> John Moore
> Barking Trout Productions
> Studio City, CA
> bigfish@pacbell.net
>
> [Non-text portions of this message have been removed]
>
>
>


[Non-text portions of this message have been removed]



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