I couldn't figure out how to get the full 60Hz progressive without the colour artifacts (the NTSC colour system wasn't designed to work with an even number of lines, and the colour carrier frequency and line rates are tightly specified by the standard*) so I decided to give you a choice! I should get around to documenting it...
(*No such issue for PAL which works happily with 312 lines progressive, and PAL-M with 262 despite lacking the "precision offset". And before anyone jumps in with NTSC-bashing, it was the pioneering standard on which PAL was built; and PAL in its time was quite complicated and patent-encumbered. All history now.)
- With that mode above, you'll get 262 lines, static colours, and a frame rate of 60.054Hz.
- But if you increase the last number by 2 (so that the vertical timings add up to a "fake" 526) you'll get 263 lines, phase-flipping colours and a frame rate of 59.826Hz.
(*No such issue for PAL which works happily with 312 lines progressive, and PAL-M with 262 despite lacking the "precision offset". And before anyone jumps in with NTSC-bashing, it was the pioneering standard on which PAL was built; and PAL in its time was quite complicated and patent-encumbered. All history now.)
Statistics: Posted by njh — Sat Apr 27, 2024 1:23 pm
