04-04-2024, 02:58 PM
(04-04-2024, 10:59 AM)Murphyv310 Wrote: Hi
I think Michael you are really confusing the OP first question.
The simple answer to whether the Pi will generate the composite NTSC 405 Line baseband video signal is dependent on the hardware. HDMI IMO is irrelevant. We need to simply find out if it's possible or not. I have a sneaky feeling it could be, but I'm no expert.
I know the question was asked about NTSC colour on 405, we don't have an answer. I'm not confused, just only considering the input. I don't have Pi5 or any colour analogue set. I only have a pair of 6″ mono CRT TVs, one 625, and one 525 (RF in). Well, I've 2" FM Radio/TV, but UHF never worked. I last saw TV on Band III on it before that closed. Band 1 625 closed in 1999 before I got it.
I happened to have a Pi4b and to have already ordered some capture devices for my PC, not the Pi.
I know the question was:
Quote:So would a 625line PAL to 405 405line NTSC converter be a practical proposition? I already have an Aurora converter for 405line colour which works very well but it would be good idea to have another converter for 405 colour.
Part of being a converter is taking live video in. Both my original Pi and older USB video converters were useless for live video in at PAL quality.
So part of the question is answered. It may be it can't do colour out on the 405line, or maybe it can. But at least live colour in isn't an issue and HDMI in is at least as useful as PAL 625 as live PAL is gone. Really the analogue PAL capture is only of value for VHS or other analogue tape or a PAL analogue camera.
I thought that while I can't answer the question on 405 NTSC colour out it would be some help to confirm that cheap NTSC, PAL and HDMI live inputs are not an issue. However the sound on my Analogue capture device doesn't work on VLC, though audio applications can see it. I've added OBS (usually used to livestream to Twitch or Youtube or other) as it can record instead of stream. So I've started transferring old VHS and S-VHS tapes to PC using 1080p H.264 encoding, with "blend" de-interlacing. It's much better quality than my late 1990 video editing card was. The first test is an S-VHS recording with "FM" stereo sound rather than the abysmal linear track sound.
Hopefully I get all the irreplaceable stuff copied before the S-VHS machine dies. The colour and sound viewed on the 1992 home video on VHS to HDTV was terrible. I can't remember what it was recorded on, but the regular VHS tape is likely a copy of whatever the camera used, though some VHS systems used a full size portable recorder on a shoulder strap and a cabled camera rather than the compact tape in the camera. It's certainly worse than my early analogue 8mm video tapes, which conveniently work on the Digital8 camera as the Analogue camera seems to have died, though there is a slight compatibility issue (head switching or something visible at bottom of frame).
