Re: Damn
John Williamson wrote:
The big problem is that PAL and NTSC TV signals are interlaced using two
fields per frame, while VGA is progressive, so you need to play
alternate lines in each field of the frame. The solution needs to
involve a frame store and sync generating circuitry at some point.
But, but a VGA card *is* a frame store, it's just a matter of changing
some clocks and persuading the CRTC to grab the relevant bits and push
out some extra sync pulses.
It's far easier to just get a converter to do VGA to PAL or NTSC on
S-VHS connectors (Component) or phono (Composite) connectors, then use a
SCART adaptor to give you a choice between composite and component
video, depending on your system. 20 to 40 zu according to where you
look. Just plug in and use, no fiddling and it "just works" (tm). The
Maplin one is good at 39.99. I use one for copying computer video to
VHS, as well as watching computer format movies on a decent size screen.
But you're likely to have to run the VGA at 800x600 60Hz to feed the
converter so will most likely get rescaling artefacts and jerky motion too.
.
Relevant Pages
- Re: Damn
... adults) watch vijos and DVDs, ... The big problem is that PAL and NTSC TV signals are interlaced using two fields per frame, while VGA is progressive, so you need to play alternate lines in each field of the frame. ... It's far easier to just get a converter to do VGA to PAL or NTSC on S-VHS connectors or phono (Composite) connectors, then use a SCART adaptor to give you a choice between composite and component video, depending on your system. ... I use one for copying computer video to VHS, as well as watching computer format movies on a decent size screen. ...
(uk.rec.sheds) - Re: 360 graphics saga continues...
... Do you know someone else with a 360 and ask them to try your vga cable ... *Another glaring problem with the VGA adapter is that it introduces a graphical glitch to 360 games that had previously only been seen in PC games. ... Frame tearing is caused when your display screen is refreshed at a different rate from your video source. ... For instance, if my Xbox is running Amped at 35 frames per second, while my VGA monitor refreshes 60 times per second they will become unsynced. ...
(uk.games.video.xbox) - Re: Damn
... two fields per frame, while VGA is progressive, so you need to play alternate lines in each field of the frame. ... The solution needs to involve a frame store and sync generating circuitry at some point. ... You can even get VGA cards with built in PAL/NTSC output for as little as 15 zu. ... You need to output odd lines from the frame buffer for the first field of each frame, then even lines, with line sync and frame sync pulses which tell the monitor whether it's an even or odd field that's coming at it. ...
(uk.rec.sheds) - Re: 360 graphics saga continues...
... Do you know someone else with a 360 and ask them to try your vga cable ... *Another glaring problem with the VGA adapter is that it introduces a graphical glitch to 360 games that had previously only been seen in PC games. ... Frame tearing is caused when your display screen is refreshed at a different rate from your video source. ... For instance, if my Xbox is running Amped at 35 frames per second, while my VGA monitor refreshes 60 times per second they will become unsynced. ...
(uk.games.video.xbox) - Re: 360 graphics saga continues...
... IF it is an overheating problem, they could explain why some games are ... Do you know someone else with a 360 and ask them to try your vga cable ... Amped at 35 frames per second, while my VGA monitor refreshes 60 times per ... from frame tearing particularly badly. ...
(uk.games.video.xbox) |
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