VHS tapes are 4:3 by design, But capturing them is not as such, scan lines are a fixed number 480 for NTSC and 576 for PAL/SECAM, However sampling each scan line is not based on aspect ratio, in fact all standards NTSC, PAL and SECAM sample at the exact same horizontal sampling rate of 720 samples per scan line, 16 blank samples (pixels) are added 8 pixels on each side to accomodate for all types of tape formats, So in average there is about 704 give or take of active video in each scan line based on tape format (VHS, Beta, 8mm, uMatic, V2000, Pro formats ...).
So as you can see neither 704x480, nor 704x576 is a 4:3 aspect ratio, therefore pixels have to have a rectangular shape to make the display ratio 4:3, Hence the name non square pixels. Or as I suggested above, take the actual resolution and resize to 1440x1080 and all proportions will line up automatically.
https://www.youtube.com/@Capturing-Memories/videos
Last edited by latreche34; 02-21-2024 at 12:16 PM.
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