Quote:
Originally Posted by Penthode
Not fully so. The UK SD video is recorded component Y/R-Y/B-Y but follows the format 625line 50fields per second. A UK DVD player with composite output will encode to provide a composite PAL on the output.
When playing on "an old NTSC TV" it depends upon how old. An old NTSC color TV will require the 625 interlaced 50 fields per second converted to 525 interlaced 59.94 fields per second. You could encode the 625 line 50Hz as NTSC color to provide color on an old NTSC color set although it would be unsatisfactory mostly from the loss of convergence due to the different vertical scan rate.
625 interlaced 50 Hertz monochrome video easily can made to play on a 525 60 Hertz TV and I do it all the time.
(I even have a few 405 line UK VHS tapes I play successfully on a 525 line set with only a very minor modification and adjustment. I can describe further if interested).
I bought one of these boxes on Amazon and it works pretty well. If you have a UK DVD player and use this box and attach it to a US/Canada Ch 3/4 modulator, you will get a relatively decent PAL converted to NTSC video on your old NTSC color TV.
https://www.amazon.com/JTLB-Converte...B0CX9718XB/ref |
As I understand DVD, all video regardless of region/Video standard (NTSC, PAL, SECAM, mixes of them some countries use) is recorded as series of digital image files which is a grid of pixels. The grid of pixels has 3 digital numbers (each 0-255) for each pixel that represent Y, R-Y, B-Y luminance and color intensity of the pixel (like a jpeg in your computer). The grid is often 640x480 for NTSC, but 720x480 is used on the grid for NTSC widescreen DVDs. All players have matrix math capabilities that scale (remap) the grid to a new grid at the set output resolution (be it PAL, SECAM, NTSC, NTSC widescreen, 1280x720 HD, or 1920x1080HD). That digital output pixel grid is then either converted to analog composite video (at which point the scanning and color subcarrier frequencies are chosen and generated and the digital video is converted to analog component video and then to composite) or the digital pixel grid is passed to an HDMI tranciever that passes the digital pixel grid directly to the monitor. There's deinterlacing provisions that can handle frame rate conversion too.
DVD doesn't capture the composite video signal, the sync, or color burst of the original signal source of the program material on it. Only a grid of pixels of a varying size that gets mapped to the selected output resolution (most players support several output resolutions) inside the Player on playback.
So DVD playback unlike pure analog recording formats is not locked to the resolution standard the DVD was mastered from...If it was then NTSC widescreen DVDs would be unplayable on non-widescreen NTSC TVs (they play fine) and 480P progressive scan monitors would have compatibility issues too.