Reply To: fine tuning an image from AV3

[Zacabeb]

The sample rate isn’t correct for the input, so you need to increase H.samplerate by maybe 15-16 steps.

Edit: I found some documentation that states the dot clock on the Macintosh IIsi should be 864 dots per line in 640×480 mode, with a horizontal sync period of 64 dots and a back porch of 96 dots.