Dolby Vision now possible through MP4 Mux.

[quietvoid]

I've preordered one for AV1, but the speed upgrade is welcomed.
Any Dolby Vision improvement is a bonus to me.

[mulucy]

I've preordered one for AV1, but the speed upgrade is welcomed.
Any Dolby Vision improvement is a bonus to me.

I tried to find some information about the CPU, but found nothing. Very strange...

[dysprosium]

I tried to find some information about the CPU, but found nothing. Very strange...

https://developer.amazon.com/docs/fire- ... stick4kmax

Mediatek MT8696
Dolby Vision support for Profile 4-MEL, 5, 8, 9. (Up to Level 9 for profiles 5 and 8. Up to Level 5 for Profile 9.)

[mulucy]

I tried to find some information about the CPU, but found nothing. Very strange...

https://developer.amazon.com/docs/fire- ... stick4kmax

Mediatek MT8696
Dolby Vision support for Profile 4-MEL, 5, 8, 9. (Up to Level 9 for profiles 5 and 8. Up to Level 5 for Profile 9.)

Good stuff, pretty much the same DV support. Thank you!

[Pixels]

I've converted the profile 7 to profile 5 DV using mp4muxer.

After extracting the single layer profile 7 mkv

Code: Select all

Format                                   : Matroska
Format version                           : Version 4
File size                                : 81.3 GiB
Duration                                 : 2 h 34 min
Overall bit rate mode                    : Variable
Overall bit rate                         : 75.3 Mb/s
Movie name                               : Transformers: The Last Knight (2017) DV
Encoded date                             : UTC 2021-02-18 10:28:06
Writing application                      : mkvmerge v53.0.0 ('Fool's Gold') 64-bit
Writing library                          : libebml v1.4.1 + libmatroska v1.6.2

Video
ID                                       : 1
ID in the original source medium         : 4113 (0x1011)
Format                                   : HEVC
Format/Info                              : High Efficiency Video Coding
Format profile                           : Main 10@L5.1@High
HDR format                               : Dolby Vision, Version 1.0, dvhe.07.06, BL+EL+RPU, Blu-ray compatible / SMPTE ST 2086, HDR10 compatible
Codec ID                                 : V_MPEGH/ISO/HEVC
Duration                                 : 2 h 34 min
Bit rate                                 : 69.1 Mb/s
Width                                    : 3 840 pixels
Height                                   : 2 160 pixels
Display aspect ratio                     : 16:9
Frame rate mode                          : Constant
Frame rate                               : 23.976 (24000/1001) FPS
Color space                              : YUV
Chroma subsampling                       : 4:2:0 (Type 2)
Bit depth                                : 10 bits
Bits/(Pixel*Frame)                       : 0.347
Stream size                              : 74.6 GiB (92%)
Default                                  : Yes
Forced                                   : No
Color range                              : Limited
Color primaries                          : BT.2020
Transfer characteristics                 : PQ
Matrix coefficients                      : BT.2020 non-constant
Mastering display color primaries        : Display P3
Mastering display luminance              : min: 0.0001 cd/m2, max: 1000 cd/m2
Original source medium                   : Blu-ray

Audio
ID                                       : 2
Format                                   : AC-3
Format/Info                              : Audio Coding 3
Commercial name                          : Dolby Digital
Format settings                          : Dolby Surround EX
Codec ID                                 : A_AC3
Duration                                 : 2 h 34 min
Bit rate mode                            : Constant
Bit rate                                 : 640 kb/s
Channel(s)                               : 6 channels
Channel layout                           : L R C LFE Ls Rs
Sampling rate                            : 48.0 kHz
Frame rate                               : 31.250 FPS (1536 SPF)
Compression mode                         : Lossy
Stream size                              : 708 MiB (1%)
Title                                    : AC-3 5.1-EX
Language                                 : English
Service kind                             : Complete Main
Default                                  : No
Forced                                   : No

to profile 5 DV mp4 as it triggers DV in my laptop

Code: Select all

Format                                   : MPEG-4
Format profile                           : Base Media / Version 2
Codec ID                                 : mp42 (mp42/dby1/isom)
File size                                : 75.3 GiB
Duration                                 : 2 h 34 min
Overall bit rate                         : 69.7 Mb/s


Video
ID                                       : 1
Format                                   : HEVC
Format/Info                              : High Efficiency Video Coding
Format profile                           : Main 10@L5.1@High
HDR format                               : Dolby Vision, Version 1.0, dvhe.05.06, BL+EL+RPU / SMPTE ST 2086, HDR10 compatible
Codec ID                                 : dvhe
Codec ID/Info                            : High Efficiency Video Coding with Dolby Vision
Duration                                 : 2 h 34 min
Bit rate                                 : 69.1 Mb/s
Width                                    : 3 840 pixels
Height                                   : 2 160 pixels
Display aspect ratio                     : 16:9
Frame rate mode                          : Constant
Frame rate                               : 23.976 (24000/1001) FPS
Color space                              : YUV
Chroma subsampling                       : 4:2:0 (Type 2)
Bit depth                                : 10 bits
Bits/(Pixel*Frame)                       : 0.347
Stream size                              : 74.6 GiB (99%)
Default                                  : No
Encoded date                             : UTC 2021-08-30 18:13:04
Tagged date                              : UTC 2021-08-30 18:13:04
Color range                              : Limited
Color primaries                          : BT.2020
Transfer characteristics                 : PQ
Matrix coefficients                      : BT.2020 non-constant
Mastering display color primaries        : Display P3
Mastering display luminance              : min: 0.0001 cd/m2, max: 1000 cd/m2
Codec configuration box                  : hvcC+dvcC+hvcE

Audio
ID                                       : 2
Format                                   : AC-3
Format/Info                              : Audio Coding 3
Commercial name                          : Dolby Digital
Format settings                          : Dolby Surround EX
Codec ID                                 : ac-3
Duration                                 : 2 h 34 min
Bit rate mode                            : Constant
Bit rate                                 : 640 kb/s
Channel(s)                               : 6 channels
Channel layout                           : L R C LFE Ls Rs
Sampling rate                            : 48.0 kHz
Frame rate                               : 31.250 FPS (1536 SPF)
Compression mode                         : Lossy
Stream size                              : 708 MiB (1%)
Language                                 : English
Service kind                             : Complete Main
Default                                  : No

The problem is that the Audio is delayed, I went through the forum and found I had to to use dovi_tool, how do i proceed..?

[staknhalo]

Black Widow UHD + P5 = the same exact source/fames/time stamps = all match exactly

Happy P8 making

[Manixx2020beyound]

@ quietvoid
L2 meta keep coming out weird.
But on the xml it seem to be correct well (not 100% sure it’s correct.)
What could be the reason for this?
Just curious if u got any insight on this from others ellse were

So far I get a perfect l1DV meta match from resolve min-average-max are all correct
For spares & munsil compare to the original

[quietvoid]

@ quietvoid
L2 meta keep coming out weird.
But on the xml it seem to be correct well (not 100% sure it’s correct.)
What could be the reason for this?
Just curious if u got any insight on this from others ellse were

So far I get a perfect l1DV meta match from resolve min-average-max are all correct
For spares & munsil compare to the original

I don't know, I've mentioned that the L2 doesn't always match in the RPU.
My only test samples are Netflix's encoded streams, and the corresponding CMv2.9 XML.
Sometimes it's fine, sometimes the values are different.

[Manixx2020beyound]

@ quietvoid
L2 meta keep coming out weird.
But on the xml it seem to be correct well (not 100% sure it’s correct.)
What could be the reason for this?
Just curious if u got any insight on this from others ellse were

So far I get a perfect l1DV meta match from resolve min-average-max are all correct
For spares & munsil compare to the original

I don't know, I've mentioned that the L2 doesn't always match in the RPU.
My only test samples are Netflix's encoded streams, and the corresponding CMv2.9 XML.
Sometimes it's fine, sometimes the values are different.

I wonder if the monitor I’m using plays a part, I’ll try & find out.

[cannibalist2]

Could someone give me information about profile 4 vs profile 8?
As far as i know
Profile 4 supports enhancement layer but base layer is SDR compatible
Profile 8 is HDR compatible but doesnt support enhancement layer

My tv is lg g1 and internal plex app can play both profiles (p4 st dl/dt dl and p8 st sl). Why are we focusing on converting FEL movies to profile 8 instead of profile 4? I have made only one movie so far with both profiles and they looked like same to me.

[quietvoid]

My tv is lg g1 and internal plex app can play both profiles (p4 st dl/dt dl and p8 st sl). Why are we focusing on converting FEL movies to profile 8 instead of profile 4? I have made only one movie so far with both profiles and they looked like same to me.

Because you're not actually converting anything when using profile 4, just changing the container.
Profile 4 is not compatible with HDR10 video such as UHD discs.

[staknhalo]

Is profile 5 just dynamic tonemapping metadata in a proprietary color space? So nothing unique in the experience really over a profile 8.1 file (assuming bitrate equal)? Or does profile 5 have specific 12bit color info in it like a profile 7 FEL?

[quietvoid]

Is profile 5 just dynamic tonemapping metadata in a proprietary color space? So nothing unique in the experience really over a profile 8.1 file (assuming bitrate equal)? Or does profile 5 have specific 12bit color info in it like a profile 7 FEL?

Profile 5 includes reshaping metadata and some different flags/values for the color space.
Otherwise the actual dynamic metadata should be the same.

The reshaping process recreates the YCbCr image, with supposedly close to 12 bits equivalent info.

[glc650]

The reshaping process recreates the YCbCr image, with supposedly close to 12 bits equivalent info.

How does that work when only profile 4 and 7 are FEL capable?

[quietvoid]

How does that work when only profile 4 and 7 are FEL capable?

The profile 5 proprietary colorspace is more efficient, see https://en.wikipedia.org/wiki/ICtCp#Characteristics
In reality FEL can also add detail/noise, so they're not the same.