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Old 16th June 2024, 12:18   #1  |  Link
jriker1
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Posts: 487
HDR10+ and nothing else?

I have a blueray that looks like it's HDR10+ and according to the metadata maybe nothing else? Trying to convert and reduce it. Don't use HDR10+ with my TVs so although I will inject it back into the video if the source has it, curious on this one. So....

If in MediaInfo I go to Advanced and then view the data I see like:

Code:
Inform                                   : English, 49.4 Mb/s, 3840*2160 (16:9), at 23.976 (24000/1001) FPS, HEVC (Main 10@L5.1@High), HDR10+
Format profile                           : Main 10@L5.1@High
HDR format                               : SMPTE ST 2094 App 4
HDR format                               : SMPTE ST 2094 App 4, Version 1, HDR10+ Profile A compatible
HDR_Format_Commercial                    : HDR10+
HDR_Format_Version                       : 1
HDR_Format_Compatibility                 : HDR10+ Profile A
So no reference to HDR10 itself.

Looking at it thru ffprobe see:

Code:
    "frames": [
        {
            "media_type": "video",
            "stream_index": 0,
            "key_frame": 1,
            "pts": 0,
            "pts_time": "0.000000",
            "best_effort_timestamp": 0,
            "best_effort_timestamp_time": "0.000000",
            "duration": 41,
            "duration_time": "0.041000",
            "pkt_pos": "8187",
            "pkt_size": "657721",
            "width": 3840,
            "height": 2160,
            "crop_top": 0,
            "crop_bottom": 0,
            "crop_left": 0,
            "crop_right": 0,
            "pix_fmt": "yuv420p10le",
            "sample_aspect_ratio": "1:1",
            "pict_type": "I",
            "interlaced_frame": 0,
            "top_field_first": 0,
            "repeat_pict": 0,
            "color_range": "tv",
            "color_space": "bt2020nc",
            "color_primaries": "bt2020",
            "color_transfer": "smpte2084",
            "chroma_location": "topleft",
            "side_data_list": [
                {
                    "side_data_type": "Mastering display metadata",
                    "red_x": "34000/50000",
                    "red_y": "16000/50000",
                    "green_x": "13250/50000",
                    "green_y": "34500/50000",
                    "blue_x": "7500/50000",
                    "blue_y": "3000/50000",
                    "white_point_x": "15635/50000",
                    "white_point_y": "16450/50000",
                    "min_luminance": "50/10000",
                    "max_luminance": "10000000/10000"
                },
                {
                    "side_data_type": "Content light level metadata",
                    "max_content": 0,
                    "max_average": 0
                },
So looks like there is HDR10 metadata.

So am I supposed to convert this with HDR10 and inject the HDR10+ info or does this not actually have HDR10? As mentioned I have had footage with HDR10, DV and HDR10+ and they all showed within Mediainfo.
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Old 31st July 2024, 21:36   #2  |  Link
Balling
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So in your opinion HDR10+ metadata is not decoded and this is just fine?? LOL. That is not like profile 5 of DOVI, but that one is decoded for a longest time with just IPTPQc2 to just 10 bit PQ (even though it needs 12 bit PQ). That does not apply metadata
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Old 1st August 2024, 18:30   #3  |  Link
benwaggoner
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It's still HDR-10; 0 for MaxCLL and Max FALL mean "undefined" which is a fully supported option. In practice most player ignore MaxCLL and I don't know of any consumer devices that do anything with MaxFALL. They're just not useful in practice.

By definition, any HDR10+ file is also backward-compatible HDR-10.
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Old 2nd August 2024, 03:56   #4  |  Link
Balling
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Quote:
Originally Posted by benwaggoner View Post

By definition, any HDR10+ file is also backward-compatible HDR-10.
Well, IPTPQc2 is also compatibe with vlc It just plays wrong color.
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Old 6th August 2024, 15:27   #5  |  Link
Corn Xin
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Yeah, it's still HDR10. Any HDR10+ file is backward-compatible with HDR10. You can convert and reduce it as HDR10, then inject the HDR10+ metadata back in.
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Old 6th August 2024, 19:44   #6  |  Link
rwill
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Quote:
Originally Posted by Balling View Post
Well, IPTPQc2 is also compatibe with vlc It just plays wrong color.
Or IPTPQc2 in VLC is right, its just that eyes and brain are wrong?
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Old 8th August 2024, 21:20   #7  |  Link
benwaggoner
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Quote:
Originally Posted by Balling View Post
Well, IPTPQc2 is also compatibe with vlc It just plays wrong color.
Yeah, but that's not a Dolby Vision file, not HDR10+.

There's no theoretical reason why HDR10+ metadata wouldn't work color spaces outside of PQ 2020, but I wouldn't call those HDR10+ files any more than I'd call one without metadata a HDR-10 file.
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