P.S. I downloaded 2 of them and tested with CinGG -- they worked and made a difference but I have no idea if it is correct. On Tue, Jul 13, 2021 at 5:25 AM Andrea paz via Cin < [email protected]> wrote:

Thanks, downloaded and added to my collection (which I then never use...). There is also a program to create hald-CLut and then turn them into .cube. -- Cin mailing list [email protected] https://lists.cinelerra-gg.org/mailman/listinfo/cin

пт, 16 июл. 2021 г., 09:36 Andrea paz via Cin <[email protected]>:

I made a forum post to keep track of the repository. So if a request is made we can direct to that post.

https://www.cinelerra-gg.org/forum/help-video/francebb-luts-for-space-color-...

It was updated yesterday with interesting message: https://forum.doom9.org/showpost.php?p=2018552&postcount=310 ==== quotation start === This feature was requested by ossnorry. As a bit of history, in 1953 the NTSC version of BT601 was born, however the tube phosphors originally used by the TVs of the time had issues displaying those values and the standard was later changed (reduced) in 1987 to make life easier for the hardware of the time, however one country never stopped using the original NTSC version and that country is Japan, which is why the original NTSC version has become known as "NTSC-J" which stands for "Japan". Anyway, the old BT601 NTSC Japan (1953) is based on the following values: x white = 0.3100 y white = 0.3160 x red = 0.670 y red = 0.330 x green = 0.210 y green = 0.710 x blue = 0.140 y blue = 0.080 and is indicated with --colormatrix smpte170m --transfer bt470m --colorprim bt470m while the normal BT601 NTSC SMPTE C (1987) that all other NTSC countries adopted has the following values: x white = 0.3127 y white = 0.3290 x red = 0.630 y red = 0.340 x green = 0.310 y green = 0.595 x blue = 0.155 y blue = 0.070 and is indicated with: --colormatrix smpte170m --transfer smpte170m --colorprim smpte170m As you can see, all values are different, including the white point. === end of quotation ==== I surely recall Japan was different, but it completely evaded my mind that old NTSC 1953 was still in use there up to relatively modern times! cc ffmpeg-users because it tend to be more popular list, so visibility will be higher.

-- Cin mailing list [email protected] https://lists.cinelerra-gg.org/mailman/listinfo/cin