Hey all,
I've been reading the forum a while, and I haven't seen anyone talk too extensively about the pros and cons of different video to vga converters.
I've seen lots of talk about the TV-3000 that is quite favorable, and also a bit about the AVToolbox AVT-3340. Has anyone used more than one unit and maybe could offer a comparison?
Also, it seems that neither of these converters has any 3:2 pulldown detection. So assuming I'm inputting an s-video source into this thing that was telecined from a 24 fps film, won't I have interlace artifacts like crazy? Like in 2 out of 5 frames?
There is a product at www.avtoolbox.com that is called the AVT-3200 that does do 3:2 pulldown detection for only $139, but it outputs 720x480 for VGA. I'm wondering if the LCD panel I bought would scoff at this resolution. I just bought a nView Spectra C.
The AVT-3700 looks like it would work, but I'm not willing to spend $395.
Any advice is appreciated,
Devin
I've been reading the forum a while, and I haven't seen anyone talk too extensively about the pros and cons of different video to vga converters.
I've seen lots of talk about the TV-3000 that is quite favorable, and also a bit about the AVToolbox AVT-3340. Has anyone used more than one unit and maybe could offer a comparison?
Also, it seems that neither of these converters has any 3:2 pulldown detection. So assuming I'm inputting an s-video source into this thing that was telecined from a 24 fps film, won't I have interlace artifacts like crazy? Like in 2 out of 5 frames?
There is a product at www.avtoolbox.com that is called the AVT-3200 that does do 3:2 pulldown detection for only $139, but it outputs 720x480 for VGA. I'm wondering if the LCD panel I bought would scoff at this resolution. I just bought a nView Spectra C.
The AVT-3700 looks like it would work, but I'm not willing to spend $395.
Any advice is appreciated,
Devin
I hate to reply to my own message, but I may have found a post alluding to the same problem.
http://diyaudio.com/forums/showthread.php?s=&threadid=6587
In this thread, Schmanthony referrs to what looks like tearing along horizontal lines. Is this the dreaded "combing" effect possibly? The effect seems to disappear later, maybe because the video source for those later videos was not from a 24FPS source?
For an explanation on the combing effect look here:
http://www.progressivescan.co.uk/interlaceddisadvantages.php
and here:
http://www.lukesvideo.com/interlacing.html
I'm wondering if it would be easier to get a progressive scan dvd player and a component to vga converter to eliminate this problem.
Devin
http://diyaudio.com/forums/showthread.php?s=&threadid=6587
In this thread, Schmanthony referrs to what looks like tearing along horizontal lines. Is this the dreaded "combing" effect possibly? The effect seems to disappear later, maybe because the video source for those later videos was not from a 24FPS source?
For an explanation on the combing effect look here:
http://www.progressivescan.co.uk/interlaceddisadvantages.php
and here:
http://www.lukesvideo.com/interlacing.html
I'm wondering if it would be easier to get a progressive scan dvd player and a component to vga converter to eliminate this problem.
Devin
I have tried a couple of video/vga converters with my nView Spectra C.
The first was the Grand Video Explorer (cost 125 UKP). This worked OK for TV and home recorded VHS tapes but had horizontal tear lines (about 5) on pre-recorded VHS tapes.
The second was the Imagine Graphics VideoMate 4 (cost 23.50 UKP - pcb only). This gave reasonably good results without the tearing seen on the Grand.
Finally however, I decided to buy a progressive scan DVD player with VGA output. I choose the Arianet PDVD-2255 (www.aria.co.uk) at a cost of 88 UKP. The results are fantastic! The colour and contrast are MUCH better with the direct VGA feed rather than using a converter. The signals are much less noisy. I really can't recommend this route enough.
Obviously I still have to use the VideoMate for watching TV and VHS tapes, but I mostly use the projector for watching movies anyway, so it's nearly always DVDs now.
Hope this helps.
The first was the Grand Video Explorer (cost 125 UKP). This worked OK for TV and home recorded VHS tapes but had horizontal tear lines (about 5) on pre-recorded VHS tapes.
The second was the Imagine Graphics VideoMate 4 (cost 23.50 UKP - pcb only). This gave reasonably good results without the tearing seen on the Grand.
Finally however, I decided to buy a progressive scan DVD player with VGA output. I choose the Arianet PDVD-2255 (www.aria.co.uk) at a cost of 88 UKP. The results are fantastic! The colour and contrast are MUCH better with the direct VGA feed rather than using a converter. The signals are much less noisy. I really can't recommend this route enough.
Obviously I still have to use the VideoMate for watching TV and VHS tapes, but I mostly use the projector for watching movies anyway, so it's nearly always DVDs now.
Hope this helps.
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