[mythtv-users] VGA to component cables

Dave dave at optionsdsl.ca
Fri Jan 5 00:49:42 UTC 2007

Its confusing now-a-days about these converters and cables with vga one 
one end, and 3xRCA on the other end.  MANY TV devices now take VGA as 
well as component video on the 15 pin VGA port. 

Connecting one of these VGA cables to a video card 15 pin port, and the 
other end to the YPbPr ports on the TV will likely yield undesirable 
results.  The Video card would have to specifically output YPbPr on the 
VGA port, and none that I know of do this, especially out of the box, 
Nvidia's new cards have a specific dongle, Im unsure about ATI. 

The converter takes the VGA signal and matches it to YPbPr, (color 
difference vs. full RGB bandwidth, and also combines the separate sync 
signals to a single composite sync, and inserts it onto the Y lead 
(green lead)

These converters DO NOT manipulate the resolution or timing, you still 
need to set up xorg/myth correctly with 1080i modelines, 720p, etc. 

Mark Knecht wrote:
> On 1/4/07, Steven Adeff <adeffs.mythtv at gmail.com> wrote:
> <SNIP>
>> Many folks here and at avsforum have the AA 9A60. I used one for a
>> while with my old 1080i tube tv and it worked great.
>> I don't know how a single cable alone could do what the 9A60 does, so
>> I question the converter cable.
>> --
>> Steve
> Steve,
>    Please excuse my ignorance on the subject. Isn't the difference
> here that the 9A60 does a conversion of VGA to HD while the cable just
> breaks out the VGA signal to the component cables without any HD
> conversion?
> Thanks,
> Mark
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