interesting bug report I found. https://gitlab.freedesktop.org/mesa/mesa/-/issues/12669 "radeonsi: Cannot deliver HDR10 0.0-125.0 values to 16 bit float GBM surface, only 0.0-1.0 seems to work. " So, it sort of force-normalized at least in egl ?
On Thu, 24 Apr 2025, Andrew Randrianasulu via Cin wrote:
interesting bug report I found.
https://gitlab.freedesktop.org/mesa/mesa/-/issues/12669
"radeonsi: Cannot deliver HDR10 0.0-125.0 values to 16 bit float GBM surface, only 0.0-1.0 seems to work. "
So, it sort of force-normalized at least in egl ?
See https://en.wikipedia.org/wiki/Rec._2020 ------------------------------------------- Rec. 2020 defines a bit depth of either 10 bits per sample or 12 bits per sample. 10 bits per sample Rec. 2020 uses video levels where the black level is defined as code 64 and the nominal peak is defined as code 940. Codes 0-3 and 1,020-1,023 are used for the timing reference. Codes 4 through 63 provide video data below the black level while codes 941 through 1,019 provide video data above the nominal peak. ------------------------------------------- I'd expect HDR10 [0-1023] just mapped to float [0.0-1.0], from which the nominal range be [64-940] == [0.063-0.919], and HDR range [4-1019] == [0.004-0.996]. Then 125.0 would be 127875, hardly presentable in 10 bit? _______________________________________________________________________________ Georgy Salnikov NMR Group Novosibirsk Institute of Organic Chemistry Lavrentjeva, 9, 630090 Novosibirsk, Russia Phone +7-383-3307864 Email [email protected] _______________________________________________________________________________
@Andrew Among the papers you posted is a German study that provides hdr material for doing tests. Such material is downloaded with ftp of which they provide server and psw. However, I cannot download them. Can you try and then put the zip into a sharing site? https://www.hdm-stuttgart.de/vmlab/hdm-hdr-2014/#FTPdownload
On Fri, Apr 25, 2025 at 5:12 PM Andrea paz via Cin <[email protected]> wrote:
@Andrew Among the papers you posted is a German study that provides hdr material for doing tests. Such material is downloaded with ftp of which they provide server and psw. However, I cannot download them. Can you try and then put the zip into a sharing site? https://www.hdm-stuttgart.de/vmlab/hdm-hdr-2014/#FTPdownload
175 Gbytes per folder a bit TOO much for file sharing sites .... Logged in via old TDE konqueror
-- Cin mailing list [email protected] https://lists.cinelerra-gg.org/mailman/listinfo/cin
Andrea, was there any specific set you were interested in. I have downloaded a couple just to make sure I could so if there is a subset that you would like to see, I can try to download that and zip it to you. On Fri, Apr 25, 2025 at 8:12 AM Andrea paz via Cin < [email protected]> wrote:
@Andrew Among the papers you posted is a German study that provides hdr material for doing tests. Such material is downloaded with ftp of which they provide server and psw. However, I cannot download them. Can you try and then put the zip into a sharing site? https://www.hdm-stuttgart.de/vmlab/hdm-hdr-2014/#FTPdownload -- Cin mailing list [email protected] https://lists.cinelerra-gg.org/mailman/listinfo/cin
No, thank you. I didn't think it was such big material. It's too much even for me.
participants (4)
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Andrea paz -
Andrew Randrianasulu -
Georgy Salnikov -
Phyllis Smith