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Uploading HEVC HDR to youtube? (lemmy.world)

submitted 5 months ago by [email protected] to c/[email protected]

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I have a sequence in 2100HLG (rec2020 color space) that I'm trying to export in hevc (h265) for submission to youtube. I'm pretty sure I'm doing everything right, but youtube refuses to publish it in HDR...

Using the guidelines here: https://support.google.com/youtube/answer/7126552#zippy=%2Cupload-requirements

I've tried several exports, but the most exact to their specs are the two following mediainfos:

ID                                       : 1
Format                                   : HEVC
Format/Info                              : High Efficiency Video Coding
Format profile                           : Main [email protected]@High
HDR format                               : SMPTE ST 2086, HDR10 compatible
Codec ID                                 : hvc1
Codec ID/Info                            : High Efficiency Video Coding
Duration                                 : 15 s 15 ms
Bit rate                                 : 79.0 Mb/s
Width                                    : 3 840 pixels
Height                                   : 2 160 pixels
Display aspect ratio                     : 16:9
Frame rate mode                          : Constant
Frame rate                               : 59.940 (60000/1001) FPS
Color space                              : YUV
Chroma subsampling                       : 4:2:0 (Type 2)
Bit depth                                : 10 bits
Bits/(Pixel*Frame)                       : 0.159
Stream size                              : 141 MiB (100%)
Language                                 : English
Encoded date                             : 2024-02-27 09:20:24 UTC
Tagged date                              : 2024-02-27 09:20:24 UTC
Color range                              : Limited
Color primaries                          : BT.2020
Transfer characteristics                 : PQ
Matrix coefficients                      : BT.2020 non-constant
Mastering display color primaries        : BT.2020
Mastering display luminance              : min: 0.0050 cd/m2, max: 1000 cd/m2
Codec configuration box                  : hvcC




Video
ID                                       : 1
Format                                   : HEVC
Format/Info                              : High Efficiency Video Coding
Format profile                           : Main [email protected]@High
HDR format                               : SMPTE ST 2086, HDR10 compatible
Codec ID                                 : hvc1
Codec ID/Info                            : High Efficiency Video Coding
Duration                                 : 15 s 15 ms
Bit rate                                 : 78.6 Mb/s
Width                                    : 3 840 pixels
Height                                   : 2 160 pixels
Display aspect ratio                     : 16:9
Frame rate mode                          : Constant
Frame rate                               : 59.940 (60000/1001) FPS
Color space                              : YUV
Chroma subsampling                       : 4:2:0 (Type 2)
Bit depth                                : 10 bits
Bits/(Pixel*Frame)                       : 0.158
Stream size                              : 141 MiB (100%)
Language                                 : English
Encoded date                             : 2024-02-27 09:05:49 UTC
Tagged date                              : 2024-02-27 09:05:49 UTC
Color range                              : Limited
Color primaries                          : BT.2020
Transfer characteristics                 : HLG
Matrix coefficients                      : BT.2020 non-constant
Mastering display color primaries        : BT.2020
Mastering display luminance              : min: 0.0050 cd/m2, max: 1000 cd/m2
Codec configuration box                  : hvcC

Is there something glaring I'm missing?

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[–] [email protected] 1 points 5 months ago

These certainly play back fine locally in HDR but once uploaded to youtube they are interpreted as non-HDR (though they look relatively fine, just in SDR, like youtube is silently tonemapping)

[–] [email protected] 1 points 5 months ago (1 children)

Does it say they’re not HDR? Are you able to see other videos in HDR? That article makes it look like places you can watch in HDR are limited, so I’m wondering if it’s working but you just can’t see it?

[–] [email protected] 1 points 5 months ago (1 children)

Yes, compared to HDR videos it just lists it as 4k, rather than 4k HDR. My device definitely shows whether it's HDR in the quality settings (e.g. "2160p60 HDR" for hdr videos instead of the normal "2160p60" on the ones I've uploaded). Additionally, "stats for nerds" shows it as being rec709

[–] [email protected] 1 points 5 months ago (1 children)

Color range : Limited

Sorry to be so long getting back to this; wanted to look on my computer for a wider screen. I did notice this in the Mediainfo readout; maybe that's the problem? It's just under the date info in the container section. That's the only thing that really stands out.

What are you editing/exporting in?

[–] [email protected] 2 points 5 months ago (1 children)

Sorry to say this whole thread may be nonsense. It just took several days for YouTube to make the HDR version available; the video I uploaded worked!

Just for completeness, I was editing in premiere pro 24 and the limited color range was not a problem

[–] [email protected] 2 points 5 months ago

Still good to know; I haven’t tried to upload anything HDR there but might someday!