Composite output via PC

Thread View: comp.multimedia

2 messages

[T] Back to Threads [V] Tree View [G] Group Articles

2 total messages Started by Marc A. Snider x0193 Wed, 02 Sep 1992 20:27

#493

Author: Marc A. Snider x0193
Date: Wed, 02 Sep 1992 20:27

14 lines
845 bytes


Sorry if this is a FAQ, but, I can't find extensive info anywhere...

Please tell me of any VGA and/or SVGA display boards which also output
NTSC composite video.  Preferably I would like to locate a 24 bit board
capable of doing this, but info on all is appreciated.  Any composite
out capability (regardless of board bandwidth) is of interest, even if   
encompassed via a multifunction board.


Thanks in advance for the info,
M. Snider
msnider@rapnet.sanders.lockheed.com

Re: Composite output via PC

#530

Author: Brett Baumberger
Date: Thu, 03 Sep 1992 12:43

26 lines
1599 bytes

Hi Marc,

I have a Ventek VGA card on my PC.  It has a VGA output and a composite
video output.  It is based on the Tseng T4000. It can display up to
32K colors (15 bit) in 640X480 mode, and has resolutions up to 1024x768.
I have found the 640x480 resolution to be the best for video of the 
resolutions it can handle.  The composite video output is based on the
Motorola 1377, which was widely used in Amiga 1000's.  The video card
does have a Windows driver.

It doesn't do composite video out unless you have a tsr running to enable
the composite portion of the board.  When you enable the composite part
of the board, sync frquency is reduced to 15.75KHz (good for composite).
The down side of this is: if your monitor cannot sync at 15.75KHz, you
have to make a choice whether you want to watch the VGA or the composite.
BUT if you have a monitor that can sync at 15.75KHz (some NEC's can),
then you can see both clearly.

The board is called the Chroma VGA adapter, and sells for about $350.

This is not an advertisement.  Video is one of my hobbies.

Brett Baumberger
bsb@hpuerca.atl.hp.com

*** my opinions only; official HP spokesman NOT ***

Thread Navigation

This is a paginated view of messages in the thread with full content displayed inline.

Messages are displayed in chronological order, with the original post highlighted in green.

Use pagination controls to navigate through all messages in large threads.

Back to All Threads