Sign In

Post #1420452

Author
44rh1n
Parent topic
Info: Guide for Working with 4K HDR Blu-ray Rips in SDR
Link to post in topic
https://originaltrilogy.com/post/id/1420452/action/topic#1420452
Date created
28-Mar-2021, 12:42 PM

winoni71 said:

Thank you all for the valuable tips.

44rh1n said:
**Important: Ensure “Mastering Display” is set to “1000-nit, BT.2020, D65, ST.2084, Full.” That is the correct option for most 4K Blu-rays. However, for some 4K Blu-rays that are mastered at 4000-nits, you’ll want to select the “4000-nit, BT.2020” option. ALSO: make sure the resolution and framerate are correct in the the Master Settings.

As for the 4000 vs 1000 nits, do I find the information in media info?
If not, how do I know which is which?

Could it be “Mastering display luminance” or “Maximum Content Light Level” (although in the second file this is higher than 4000)?

Thank you.

Video
ID : 1
Format : HEVC
Format/Info : High Efficiency Video Coding
Format profile : Main 10@L5.1@High
HDR format : SMPTE ST 2086, HDR10 compatible
Codec ID : hvc1
Codec ID/Info : High Efficiency Video Coding
Duration : 2 h 15 min
Bit rate : 62.8 Mb/s
Maximum bit rate : 110 Mb/s
Width : 3 840 pixels
Height : 2 160 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 23.976 (23976/1000) FPS
Original frame rate : 23.976 (24000/1001) FPS
Color space : YUV
Chroma subsampling : 4:2:0 (Type 2)
Bit depth : 10 bits
Bits/(Pixel*Frame) : 0.316
Stream size : 59.5 GiB (100%)
Encoded date : UTC 2021-03-28 11:31:48
Tagged date : UTC 2021-03-28 11:33:00
Color range : Limited
Color primaries : BT.2020
Transfer characteristics : PQ
Matrix coefficients : BT.2020 non-constant
Mastering display color pri : Display P3
Mastering display luminance : min: 0.0050 cd/m2, max: 4000 cd/m2
Maximum Content Light Level : 636 cd/m2
Maximum Frame-Average Light : 103 cd/m2
Codec configuration box : hvcC

Video
ID : 1
Format : HEVC
Format/Info : High Efficiency Video Coding
Format profile : Main 10@L5.1@High
HDR format : SMPTE ST 2086, HDR10 compatible
Codec ID : hvc1
Codec ID/Info : High Efficiency Video Coding
Duration : 2 h 7 min
Bit rate : 50.4 Mb/s
Maximum bit rate : 100 Mb/s
Width : 3 840 pixels
Height : 2 160 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 23.976 (23976/1000) FPS
Original frame rate : 23.976 (24000/1001) FPS
Color space : YUV
Chroma subsampling : 4:2:0 (Type 2)
Bit depth : 10 bits
Bits/(Pixel*Frame) : 0.253
Stream size : 44.8 GiB (100%)
Encoded date : UTC 2021-03-25 17:12:31
Tagged date : UTC 2021-03-25 17:13:24
Color range : Limited
Color primaries : BT.2020
Transfer characteristics : PQ
Matrix coefficients : BT.2020 non-constant
Mastering display color pri : Display P3
Mastering display luminance : min: 0.0050 cd/m2, max: 4000 cd/m2
Maximum Content Light Level : 4809 cd/m2
Maximum Frame-Average Light : 537 cd/m2
Codec configuration box : hvcC

Is that info for two different movies?

It’s the Maximum Content Light Level. So for the first one, it looks like it’s 636-nits, and for the second one it looks like it’s 4809. So I’d use the 1,000-nits setting for the first one and the 4000-nits setting for the second one.