The Extron DVS 605 is a robust scaler that can be programmed with custom resolutions to downscale to a CRT. It has inputs and outputs for both digital and analog video, a crisp picture, fluid image controls and about 1 frame of lag for progressive inputs. To help downscaling enthusiasts get the most out of their Extron DVS 605, I made a downscaling resolutions package and wrote a setup tutorial.
Most notable inclusions in the resolution package are:
– Windowed 240p and 480i output (180p and 360i active pixels) for displaying aspect-correct 16:9 content on 4:3 displays, similar to the OSSC Pro
– 640x480i output without needing to extensively re-scale the horizontal width
– HD/PC CRT resolutions including 960i@60Hz (31KHz), 540p@60Hz, and 240p@120Hz (untested)
– 1920x240p remains unchanged. I am working on finding a 240p resolution that does not require manually reducing the H width to about 1500 and V size to 230, though this only needs to be done the first time and then save the pre-set.
These EDID.bin files may work on other Extron scalers listed on the PCS compatibility list, though a DAC will be required to output to a CRT and results may vary. As the DVS 605 has 5 custom resolution slots, I recommend utilising these 4 to output to a 15KHz CRT: 1920x240p, 640x480i, 240pWS and 480iWS.
For these new widescreen resolutions, I took inspiration from the OSSC Pro’s WS resolutions and the developer e8.root, who is making an exciting new downscaling firmware for a common scan converter that I will soon feature. The image below is using the new letterboxed 240pWS resolution to downscale Sonic Mania from 720p with correct aspect ratio on a 4:3 display. Though a keen eye may spot areas of uneven scaling in the text, where some fine-tuning of the DVS 605’s picture controls may be necessary for exact integer-downscaling.
The new tutorial can be at the end of the Downscaling section under Extron EDID Method (DVS 605).