macOS Linux下如何确认HDR Video?

How to identify HDR video?

how to get HDR info preference

现在了解到通过下面几个命令可以获取

avmediainfo==avmediainfo -- media analysis tool

/usr/local/bin/ffprobe 【ffmpeg】

ffprobe -show_streams -v error IMG_4683.MOV

/usr/local/bin/mediainf

? Downloads /usr/local/bin/mediainfo IMG_4683.MOV|egrep "Color primaries|Bit depth|HDR forma"

HDR format : Dolby Vision, Version 1.0, dvhe.08.0A, BL+RPU, HLG compatible

Bit depth : 10 bits

Color primaries : BT.2020

我用iPhone 12 Pro max拍了视频。文件名称如下：IMG_4683.MOV

?  Downloads file IMG_4683.MOV
IMG_4683.MOV: ISO Media, Apple QuickTime movie, Apple QuickTime (.MOV/QT)

?  Downloads stat IMG_4683.MOV
  File: IMG_4683.MOV
  Size: 200521045 	Blocks: 393472     IO Block: 4096   regular file
Device: 1000004h/16777220d	Inode: 18092095    Links: 1
Access: (0644/-rw-r--r--)  Uid: (  501/     lex)   Gid: (  501/access_bpf)
Access: 2020-11-26 10:44:55.925642000 +0800
Modify: 2020-11-22 13:54:16.000000000 +0800
Change: 2020-11-26 10:43:22.911896767 +0800
 Birth: 2020-11-22 13:54:16.000000000 +0800

?  Downloads avmediainfo IMG_4683.MOV
Asset: IMG_4683.MOV
Duration: 30.018 seconds (18011/600)
Track count: 5
Track 1: Video 'vide'
	Enabled: Yes
	Format Description 1:
		Format: HEVC 'hvc1'
		Dimensions: 3840 x 2160
		Encoded Pixels: 3840 x 2160
		Presentation Dimensions: 3840 x 2160
	Data size: 199556997 bytes
	Media time scale: 600
	Duration: 30.018 seconds
	Estimated data rate: 53179.748 kbit/s
	Nominal frame rate: 59.960 fps
	Minimum sample duration: 9/600 seconds
	Frame reordering required
	1 segment present
	Index   Media Start  Media Duration   Track Start  Track Duration
	    1  00:00:00.000    00:00:30.018  00:00:00.000    00:00:30.018
Track 2: Sound 'soun'
	Enabled: Yes
	Format Description 1:
		Format: AAC 'aac '
		Channel Layout: Stereo (L R)
		Sample rate: 44100.0
		Bytes per packet: 0
		Frames per packet: 1024
		Bytes per frame: 0
		Channels per frame: 2
		Bits per channel: 0
	Data size: 582484 bytes
	Media time scale: 44100
	Duration: 30.018 seconds
	Estimated data rate: 154.968 kbit/s
	1 segment present
	Index   Media Start  Media Duration   Track Start  Track Duration
	    1  00:00:00.048    00:00:30.018  00:00:00.000    00:00:30.018
Track 3: Metadata 'meta'
	Enabled: Yes
	Format Description 1:
		Format: Timed Metadata 'mebx'
	Data size: 10 bytes
	Media time scale: 600
	Duration: 30.018 seconds
	Estimated data rate: 0.003 kbit/s
	Nominal frame rate: 0.033 fps
	Minimum sample duration: 18012/600 seconds
	1 segment present
	Index   Media Start  Media Duration   Track Start  Track Duration
	    1  00:00:00.000    00:00:30.018  00:00:00.000    00:00:30.018
Track 4: Metadata 'meta'
	Enabled: Yes
	Format Description 1:
		Format: Timed Metadata 'mebx'
	Data size: 17464 bytes
	Media time scale: 600
	Duration: 30.018 seconds
	Estimated data rate: 4.654 kbit/s
	Nominal frame rate: 6.063 fps
	Minimum sample duration: 20/600 seconds
	1 segment present
	Index   Media Start  Media Duration   Track Start  Track Duration
	    1  00:00:00.000    00:00:30.018  00:00:00.000    00:00:30.018
Track 5: Metadata 'meta'
	Enabled: Yes
	Format Description 1:
		Format: Timed Metadata 'mebx'
	Data size: 264768 bytes
	Media time scale: 600
	Duration: 30.018 seconds
	Estimated data rate: 70.558 kbit/s
	Nominal frame rate: 59.960 fps
	Minimum sample duration: 9/600 seconds
	1 segment present
	Index   Media Start  Media Duration   Track Start  Track Duration
	    1  00:00:00.000    00:00:30.018  00:00:00.000    00:00:30.018

https://blog.csdn.net/charleslei/article/details/80385407?utm_medium=distribute.pc_relevant.none-task-blog-BlogCommendFromMachineLearnPai2-2.control&depth_1-utm_source=distribute.pc_relevant.none-task-blog-BlogCommendFromMachineLearnPai2-2.control

3.ARIB STD-B67 定义了HDR摄像机的OETF，即 HLG(Hybrid Log-Gamma)曲线

HLG=ARIB STD-B67 2015年6月正式发布，

ffmpeg压缩参数中，HDR10的transfer=smpte2084，HLG的transfer=arib-std-b67

?  Downloads ffprobe -show_streams -v error IMG_4683.MOV|egrep "^color_transfer|^color_space=|^color_primaries="
color_space=bt2020nc
color_transfer=arib-std-b67
color_primaries=bt2020

brew install mediainfo 【在macOS下，CentOS应该是第三方源yum,apt一样的情况】

? Downloads brew install mediainfo

?  Downloads mediainfo IMG_4683.MOV |egrep "HDR format|Bit depth|Color primaries"
HDR format                               : Dolby Vision, Version 1.0, dvhe.08.0A, BL+RPU, HLG compatible
Bit depth                                : 10 bits
Color primaries                          : BT.2020