I have tried to capture some game play from my genesis both on my modle 1 and my model 2 with the rf adaptor, same result a scrambled picture and a loud buzzing insted of audio. so I built a composit cable for the thinking it would fix the problem. still scrambled, the only thing is my SNES, xbox360,xbox,dreamcast and even my 3DO record fine.My thought is for some reason the capture card is imcompatable with the genesis tv signal. the card is a WinTv happaguage 350 pvr with hardware mpeg2 encoader. any body got any suggestions:shrug: I'm stumpped besids buying a new card. heres a video of what it looks like when I try to capture a game: http://www.youtube.com/watch?v=Cr7qZrz_PLM heres a video of my satern look at the diffrence: http://www.youtube.com/watch?v =ybrpQ0NikRM
You're right, it's having trouble with chrominance part of the video signal. You could get another card or mod the console with another RGB encoder I guess.
The MD is either busted, has 2 pins touching one another inside your composite cable, or the video capture card thinks it's a PAL/SECAM... signal.
Ive had issues with the signal just not being strong enough for certain consoles for some strange reason :\ My CD-i doesnt like my new(er) capture card, nor does my PS1 really.
no the system is good I tried it with 2 diffrent systems. and the cable is also good 1. I made it myself(that doesnt say much):lol: 2. I tried it on my tv and it plays fine no color distortion or anything, so its not the cable. i'll check to see if thers a way to change between NTSC and PAL on the capure softwear. I also tried recording the game play to a VCR and then playing it back into the PC. the same thing happens but the picture is fine on a regular tv.
This suggests some disagreement between your RF/Composite signal and the Automatic Gain control in the capture card [VCRs have AGC whereas TVs don't, hence my initial suggestion of Macrovision or similar]. I'm no expert on video but assuming your capture card supports it take a pure RGB signal off of the Megadrive [ala http://http://www.mmmonkey.co.uk/console/sega/md-stereo-scart.htm] as that will give you a 'cleaner' signal. Alternatively, assuming my previous diagnosis of the sync pulses fucking with the AGC being correct, a device known as a Time Base Correcter could be utilised to recreate those sync pulses at a level acceptable to your capture card. /Expensive
The video level should be fine; composite is always 1V into 75 ohm. The sync is also fine. The problem is that the card is filtering/confusing chrominance (would happen if set to 4.43 MHz instead of 3.58 or if it was using a PAL matrix).
Very true. My only thought was that if the sync pulse was weak the AGC would compensate by increasing the luminescence but leaving the Chrominance relatively low, leading to the washed out colour seen in the video. I think I may be missing a trick however... Either way, recording the straight RGB output will correct the colour.
