Sign In

Info: Guide for Working with 4K HDR Blu-ray Rips in SDR — Page 4

Author
Time

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

Author
Time

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.

Author
Time

44rh1n, I’ve successfully finished a 4K edit in Resolve using Dolby Vision and adding additional color correction. When I export the project, for example to an HEVC mp4, the final result looks beautiful. Note: the project settings are just as you specify (also the output is of course REC 709).

Here’s my question: when playing on a TV the HDR notification icon comes up signaling that this is HDR content. This this is just a flagging issue and this is fully an SDR export, correct?

heil palpatine.

Author
Time
 (Edited)

krausfadr said:

44rh1n, I’ve successfully finished a 4K edit in Resolve using Dolby Vision and adding additional color correction. When I export the project, for example to an HEVC mp4, the final result looks beautiful. Note: the project settings are just as you specify (also the output is of course REC 709).

Here’s my question: when playing on a TV the HDR notification icon comes up signaling that this is HDR content. This this is just a flagging issue and this is fully an SDR export, correct?

Good question. How did you export it? Did you use instructions in step 8?

“8). Lastly, go to the delivery page and set whatever export settings you desire (again, I always recommend ProRes, but the settings you would pick depend on your needs). ***Then go to Advanced Settings, and change the Tone Mapping to Dolby Vision. Ensure the selected option under Dolby Vision is “100-nit, BT.709, BT.1886, Full.” Once you’ve got all your export settings enabled and you’ve selected the Dolby Vision tonemapping, you can add the export to your Render Queue and export it out.”

If you followed those instructions and still have an issue, then you may additionally need to go to “Advanced Settings” on the delivery page, and set the “Color Space Tag” to Rec.709 and the “Gamma Tag” to Gamma 2.4.

If you just export out on HEVC without using the 100-nit trim, then it will export the HDR version. However, it likely won’t be a great HDR grade if you didn’t do it with a proper HDR monitor.

Author
Time
 (Edited)

thanks for the detailed answer. If at first you don’t succeed, reread the instructions! step 8 was not done properly. but I will check out how the HDR export looks a little closer. Because I didn’t do extensive grading after the Dolby Vision. Mostly just lessened the greens.

Edit: on closer review the HDR export is not good. So I went ahead and followed those instructions correctly.

heil palpatine.