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View Full Version : HDR10+ and nothing else?


jriker1
16th June 2024, 12:18
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:

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:

"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.

Balling
31st July 2024, 21:36
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

benwaggoner
1st August 2024, 18:30
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.

Balling
2nd August 2024, 03:56
By definition, any HDR10+ file is also backward-compatible HDR-10.
Well, IPTPQc2 is also compatibe with vlc :) It just plays wrong color.

Corn Xin
6th August 2024, 15:27
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.

rwill
6th August 2024, 19:44
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?

benwaggoner
8th August 2024, 21:20
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.