Wow, this thread is still running.. I created the CGA composite .GL files, so here's how I made them: 1) First I started looking for a video clip that could be looped 2) Then I extracted the frames from the AVI file, I forget which program I used to do that (maybe avi2bmp or VLC) 3) Then I converted …

*kicks thread* Someone took a Doom gameplay video in normal VGA mode and ran the video through some post-production video filter to simulate CGA modes. So this is not the CGA Doom patch , it's just made to look as if it is running on CGA. http://www.youtube.com/watch?v=9YoqUM1ZLQ0 The "CGA composite …

After my quick .GL animation test, I couldn't resist making a better video example. So I've created three 640*200 2 color animations that can make use of the CGA colorburst mode (including a nsfw one :lol:). The GLVIEW.EXE player cannot switch to composite mode, so you do need the COMPCGA3.EXE tool. …

Actually, there is no original B/W line version. I converted the treefrog photo to a 160*200*16 colors bitmap, so that is my 'original' file. The B/W line dithered version is then generated by my BMPDITH gwbasic program, using the 16 color .BMP as input. So, you can generate the B/W line version by …

You don't have to make your own file format for CGA video, you can use the very old .GL file format. It supports 640*200*2 format too. This was an early animation format used by GRASP (GRaphical System for Presentation), it simply contained a script file and a number of .PIC files (PC-Paint format). …

@ripsaw8080: That's great, thanks for the code example. I've changed my BMPDITH to make use of this, so now you can press 'c' to switch color burst mode on and off. 😁

My GWBASIC program doesn't switch into composite mode by itself. And COMPCGA3.EXE only works when you start DosBox with machine type CGA. There should be a line in the dosbox .config file with "machine=cga" or you can also just use this parameter: dosbox -machine cga You will recognise normal CGA …

Thanks VileRancour. I made another GWBASIC program that can display a .BMP file in color using the dithering technique. The .BMP files must have a 4bit palette (16 colors) and make use of the CGA composite colors. I converted some images to 160*200 .BMPs using Paint Shop Pro, so the actual image …

I also used the resulting colors as a color palette in Paint Shop Pro in windows. I converted 2 pictures to use these CGA composite colors, and load them in PC-Paint in dosbox. See conveted gif files, and screenshots in attachement.

This composite mode is pretty interesting. I've downloaded the COMPCGA3.EXE program and tried some stuff. Here is a GW-BASIC program to print 15 patterns in screen mode 640*200*2, see screenshots below for the results. 10 SCREEN 2:CLS 20 Y = 0: YSIZE = 8 30 FOR COUNT = 0 TO 15 40 LOCATE COUNT+1, 1 …