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#Help with Video!

11 messages in this thread
#37240From: Oct 25, 1986 2:27 AM
Hello all! I am having trouble using the composite video output of the Amiga with Video Equip. I get a very ghosty looking color picture. Please help me! What am I doing wrong? I am using 75 Ohm Coax. If I even take the Amiga output (Composite) directly to the Composite input of the Amiga 1080 Monitor I get the bad ghosting effect! Makes the picture look VERY VERY blury! But with the RGB outputs. Its as sharp as a razor. what gives?
#37243From: Larry Phillips/ICUGOct 25, 1986 2:39 AM
Look for a program in the DLs here called SETLACE (or just LACE), that will set interlace mode. The majority of good video equipment just can't handle the non interlaced screen. When you find this one, just run it before doing anything you want to record, and it should help a lot.
#37243From: Larry Phillips/ICUGOct 25, 1986 2:39 AM
Look for a program in the DLs here called SETLACE (or just LACE), that will set interlace mode. The majority of good video equipment just can't handle the non interlaced screen. When you find this one, just run it before doing anything you want to record, and it should help a lot.
#37250From: Mike BerroOct 25, 1986 2:56 AM
Yes, definitely use SETLACE or LACE (LACE is easier to use, but I am biased!) Also, the composite output of the Amiga is pretty bad, as you can see when you connect it directly to the monitor. If you are serious, get yourself an RGB to composite encoder; a good one will be >$500. The Amiga uses the Motorola 1377 encoder chip, which I have used to good effect. For some reason their circuit sucks. One of these days I'll poke around inside and see if I can't fix it.
#37310From: scott drysdaleOct 25, 1986 6:29 PM
i don't think the composite output sucks. i've used it with a commodore composite monitor (the one for the 64, i forget the model number) and it worked just swell. works great going through a VCR-as-modulator to a color tv, too. and the VCR records the picture just dandy. no setlace. but you do need setlace for professional video stuff. home VCRs don't really care, though. –Scotty
#37489From: Rick RodriguezOct 27, 1986 5:18 PM
The composite output definitely sucks (in comparison to the rgb output). The composite chroma is too hot, there is a matrix behind the image and color rendition is not accurate. I just recorded the rgb output through an encoder onto one-inch tape and the image was spectacular.
#37489From: Rick RodriguezOct 27, 1986 5:18 PM
The composite output definitely sucks (in comparison to the rgb output). The composite chroma is too hot, there is a matrix behind the image and color rendition is not accurate. I just recorded the rgb output through an encoder onto one-inch tape and the image was spectacular.
#37310From: scott drysdaleOct 25, 1986 6:29 PM
i don't think the composite output sucks. i've used it with a commodore composite monitor (the one for the 64, i forget the model number) and it worked just swell. works great going through a VCR-as-modulator to a color tv, too. and the VCR records the picture just dandy. no setlace. but you do need setlace for professional video stuff. home VCRs don't really care, though. –Scotty
#37396From: Jim NelsonOct 26, 1986 1:46 PM
A video engineer that I've worked with told me that the 1377 circuit they used came ( nearly) straight off the data sheet app note. Frank Raffaeli ( Nova Com) tells me that they left out necessary filters and that the delay line is the wrong delay. RS-170A is an expensive spec to generate. Do you think there would be a market for a good fairly inexpensive encoder for the amiga?
#37396From: Jim NelsonOct 26, 1986 1:46 PM
A video engineer that I've worked with told me that the 1377 circuit they used came ( nearly) straight off the data sheet app note. Frank Raffaeli ( Nova Com) tells me that they left out necessary filters and that the delay line is the wrong delay. RS-170A is an expensive spec to generate. Do you think there would be a market for a good fairly inexpensive encoder for the amiga?
#37250From: Mike BerroOct 25, 1986 2:56 AM
Yes, definitely use SETLACE or LACE (LACE is easier to use, but I am biased!) Also, the composite output of the Amiga is pretty bad, as you can see when you connect it directly to the monitor. If you are serious, get yourself an RGB to composite encoder; a good one will be >$500. The Amiga uses the Motorola 1377 encoder chip, which I have used to good effect. For some reason their circuit sucks. One of these days I'll poke around inside and see if I can't fix it.