On Tuesday, July 13, 2021, Phyllis Smith via Cin <[email protected]> wrote:
> Not so sure about that after running more tests. > Using 601Pal, mediainfo reports BT.601. > Using 601Ntsc, medinao reports BT.709 !! > As always, have to make sure old projects still work. > its called color hell for this exact reason) may be mediainfo a bit wrong (at least ver. you used - shoukd be recent on Fedora, but small fixes like this can go in anytime...) see confusing code at (should be recent enough from 2020) https://sourceforge.net/p/mediainfo/discussion/297610/thread/0b6d2fd38f/?limit=25 ===== ha. //--------------------------------------------------------------------------- extern const char* Mpegv_colour_primaries(int8u colour_primaries) { switch (colour_primaries) { case 1 : return "BT.709"; case 4 : return "BT.470 System M"; case 5 : return "BT.601 PAL"; case 6 : return "BT.601 NTSC"; case 7 : return "SMPTE 240M"; //Same as BT.601 NTSC case 8 : return "Generic film"; case 9 : return "BT.2020"; //Added in HEVC case 10 : return "XYZ"; //Added in HEVC 2014 case 11 : return "DCI P3"; //Added in HEVC 2016 case 12 : return "Display P3"; //Added in HEVC 2016 case 22 : return "EBU Tech 3213"; //Added in HEVC 2016 default : return ""; } } //--------------------------------------------------------------------------- extern const char* Mpegv_transfer_characteristics(int8u transfer_characteristics) { switch (transfer_characteristics) { case 1 : return "BT.709"; //Same as BT.601 case 4 : return "BT.470 System M"; case 5 : return "BT.470 System B/G"; case 6 : return "BT.601"; case 7 : return "SMPTE 240M"; case 8 : return "Linear"; case 9 : return "Logarithmic (100:1)"; //Added in MPEG-4 Visual case 10 : return "Logarithmic (316.22777:1)"; //Added in MPEG-4 Visual case 11 : return "xvYCC"; //Added in AVC case 12 : return "BT.1361"; //Added in AVC case 13 : return "sRGB/sYCC"; //Added in HEVC case 14 : return "BT.2020 (10-bit)"; //Same a BT.601 //Added in HEVC, 10/12-bit difference is in ISO 23001-8 case 15 : return "BT.2020 (12-bit)"; //Same a BT.601 //Added in HEVC, 10/12-bit difference is in ISO 23001-8 case 16 : return "PQ"; //Added in HEVC 2015 case 17 : return "SMPTE 428M"; //Added in HEVC 2015 case 18 : return "HLG"; //Added in HEVC 2016 default : return ""; } } //--------------------------------------------------------------------------- extern const char* Mpegv_matrix_coefficients(int8u matrix_coefficients) { switch (matrix_coefficients) { case 0 : return "Identity"; //Added in AVC case 1 : return "BT.709"; case 4 : return "FCC 73.682"; case 5 : return "BT.470 System B/G"; case 6 : return "BT.601"; //Same as BT.470 System B/G case 7 : return "SMPTE 240M"; case 8 : return "YCgCo"; //Added in AVC case 9 : return "BT.2020 non-constant"; //Added in HEVC case 10 : return "BT.2020 constant"; //Added in HEVC case 11 : return "Y'D'zD'x"; //Added in HEVC 2016 case 12 : return "Chromaticity-derived non-constant"; //Added in HEVC 2016 case 13 : return "Chromaticity-derived constant"; //Added in HEVC 2016 case 14 : return "ICtCp"; //Added in HEVC 2016 default : return ""; } } ===== note _transfer characteristics_ #1 said to be the same for bt. 709 and #6 bt. 601! (in comment) can you post full mediainfo output for input video, and three other videos: unmodded Cin, modded and set to BT601 NTSC, set to BT601 pal? > > On Mon, Jul 12, 2021 at 2:26 PM Andrew Randrianasulu via Cin < > [email protected]> wrote: > >> According to >> >> https://kdenlive.org/en/project/color-hell-ffmpeg- >> transcoding-and-preserving-bt-601/ >> >> bt 601 pal and bt 601 ntsc are slightly different, I tried to update >> CinGG's definitions so now she have two distinct 601 colorspaces, but I >> still can be wrong (esp on kr, kb coeffecients) >> >> can anyone test patch 3 and see if it makes any positive difference? >> >> >> -- >> Cin mailing list >> [email protected] >> https://lists.cinelerra-gg.org/mailman/listinfo/cin >> >
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