Dolby Vision now possible through MP4 Mux.

[mulucy]

Would this be somewhat of an expected result? My thinking is that both the Hotstar and Disney+ releases are probably from the same master, just that one is offered at a higher bitrate. Maybe a better comparison would be taking the profile 5 RPU from one of the Disney+ Marvel or Star Wars films and applying it to the corresponding UHD disk HDR10 layers. This will probably lead to some varied results, though, as I'm guessing whether or not a disc release and its digital counterpart are from the same master will be different from film to film.

Yep, I think for this to work properly, both have to come from the same HDR grade. I've compared a lot of web streaming encodes with the corresponding bluray disc and I would say it's 99% the same grade but sometimes it is different(can even be different from one streaming site to another). It would be interesting to see what happens when it's the case but personally, I don't think I would bother adding DV metadata to an HDR10 BL if it's not exactly the same grade with exactly the same metadata.

Sometimes, it's exactly the same grade (well when tonemapped to SDR) but the metadata are different, and because my TV use maxcll/fall for the tonemaping, the HDR output looks different but still looks the same tonemapped in SDR with madvr. It would be interesting to find out what would happen there as well.

I did compare Star Wars HDR10 disc vs the web HDR10 and if I recall correctly it was the same HDR grade. I assume the HDR10 encode is always made from the DV grade(even when DV not present on bluray). Seems like a waste of time and money to grade it two times. Anyway, when I get a chance, I will try to add DV rpu to this movie and then take a look if I can spot a difference

The version of Avengers Endgame that's available on torrent websites is 25fps if I'm not mistaken (bluray is 23.976). I wonder if it can affect the output too.

It's 23.976 actually, just checked the mediainfo

[mulucy]

I am not sure what the deal is. But my Apple TV 4K ( the previous Gen ) plays P7 MEL and P8 with Plex. What's interesting is, Plex plays P5 files with messed-up green or purple colors lol. Infuse Pro falls back to HDR10 with all profiles, but P5. Anybody knows what's happening, is it Plex magic or has Apple added more support via software update?

[RESET_9999]

Maybe a better comparison would be taking the profile 5 RPU from one of the Disney+ Marvel or Star Wars films

I just did myself a DV version of the Star Wars New Hope UHD bluray and it looks great!! Very noticeable upgrade in quality(even on the camera comparison) and the luminance /color looks the same as the original profile 5.
https://screenshotcomparison.com/comparison/16048

for those who want to do the same, you have to remove 39 frames from the beginning and add 39 frames at the end. Then the lossless Atmos needs a negative 1627MS delay.
It plays flawlessly on the x700, the shield, and the C8 internal app. I only watched a couple of minutes though but I plan to watch the whole movie this weekend.
The first scene with all the bright white walls is great to expose the shield red push as well, I noticed it right away. The original P5 is clean.

amazing work @Quietvoid

Code: Select all

Video
ID                                       : 4117 (0x1015)
Menu ID                                  : 1 (0x1)
Format                                   : HEVC
Format/Info                              : High Efficiency Video Coding
Format profile                           : Main 10@L5.1@High
HDR format                               : Dolby Vision, Version 1.0, dvhe.08.06, BL+RPU, HDR10 compatible / SMPTE ST 2086, HDR10 compatible
Codec ID                                 : 36
Duration                                 : 2 h 4 min
Bit rate                                 : 51.3 Mb/s
Width                                    : 3 840 pixels
Height                                   : 2 160 pixels
Display aspect ratio                     : 16:9
Frame rate                               : 23.976 (24000/1001) FPS
Color space                              : YUV
Chroma subsampling                       : 4:2:0 (Type 2)
Bit depth                                : 10 bits
Bits/(Pixel*Frame)                       : 0.258
Stream size                              : 44.6 GiB (91%)
Color range                              : Limited
Color primaries                          : BT.2020
Transfer characteristics                 : PQ
Matrix coefficients                      : BT.2020 non-constant
Mastering display color primaries        : BT.2020
Mastering display luminance              : min: 0.0001 cd/m2, max: 1000 cd/m2

Audio #1
ID                                       : 4352 (0x1100)
Menu ID                                  : 1 (0x1)
Format                                   : MLP FBA AC-3 16-ch
Format/Info                              : Meridian Lossless Packing FBA with 16-channel presentation
Commercial name                          : Dolby TrueHD with Dolby Atmos
Muxing mode                              : Stream extension
Codec ID                                 : 131
Duration                                 : 2 h 4 min
Bit rate mode                            : Variable
Bit rate                                 : 640 kb/s
Maximum bit rate                         : 3 705 kb/s
Channel(s)                               : 8 channels
Channel layout                           : L R C LFE Ls Rs Lb Rb
Sampling rate                            : 48.0 kHz
Frame rate                               : 31.250 FPS (1536 SPF)
Compression mode                         : Lossless
Stream size                              : 571 MiB (1%)
Language                                 : English
Service kind                             : Complete Main
Number of dynamic objects                : 13
Bed channel count                        : 1 channel
Bed channel configuration                : LFE

[mulucy]

Maybe a better comparison would be taking the profile 5 RPU from one of the Disney+ Marvel or Star Wars films

I just did myself a DV version of the Star Wars New Hope UHD bluray and it looks great!! Very noticeable upgrade in quality(even on the camera comparison) and the luminance /color looks the same as the original profile 5.
https://screenshotcomparison.com/comparison/16048

for those who want to do the same, you have to remove 39 frames from the beginning and add 39 frames at the end. Then the lossless Atmos needs a negative 1627MS delay.
It plays flawlessly on the x700, the shield, and the C8 internal app. I only watched a couple of minutes though but I plan to watch the whole movie this weekend.
The first scene with all the bright white walls is great to expose the shield red push as well, I noticed it right away. The original P5 is clean.

amazing work @Quietvoid

Thank you! I read the manual for the tool, but I am confused. Would you mind writing very short examples of combining P5 RPU with HDR10 UHD Disk in the form of script, please?

edit:
Seeing this development makes me so much happier. It's the biggest blow in Disney's face for omitting DV from UHD disks. Fking greedy aholes! Thank you, @Quietvoid!

[RESET_9999]

Thank you! I read the manual for the tool, but I am confused. Would you mind writing very short examples of combining P5 RPU with HDR10 UHD Disk in the form of script, please?

sorry I'm really not the best at explaining things but the cmd-line I used are:

convert p5 to p8:

Code: Select all

dovi_tool.exe -m 3 extract-rpu X:\DV.hevc

inject p8 into HDR10 BL:

Code: Select all

dovi_tool.exe inject-rpu -i X:\HDR10.hevc --rpu_in X:\RPU.bin

[mulucy]

Thank you! I read the manual for the tool, but I am confused. Would you mind writing very short examples of combining P5 RPU with HDR10 UHD Disk in the form of script, please?

sorry I'm really not the best at explaining things but the cmd-line I used are:

convert p5 to p8:

Code: Select all

dovi_tool.exe -m 3 extract-rpu X:\DV.hevc

inject p8 into HDR10 BL:

Code: Select all

dovi_tool.exe inject-rpu -i X:\HDR10.hevc --rpu_in X:\RPU.bin

This explains a lot. Thank you! Another question as X700 owner, what container did you choose for your converted Star Wars movie? AFAIK, X700 does not support MKV. And for creating a container, did you use TSmuxer or another MKV tool? I noticed you mentioned skipping and adding 39 frames, plus delaying the ATMOS track.

[RESET_9999]

This explains a lot. Thank you! Another question as X700 owner, what container did you choose for your converted Star Wars movie? AFAIK, X700 does not support MKV. And for creating a container, did you use TSmuxer or another MKV tool? I noticed you mentioned skipping and adding 30 frames, plus delating the ATMOS track.

TSmuxer

[glc650]

I just did myself a DV version of the Star Wars New Hope UHD bluray and it looks great!! Very noticeable upgrade in quality(even on the camera comparison) and the luminance /color looks the same as the original profile 5.

So you are taking a streaming/web-dl version of a movie that has an HDR10 base layer plus RPU and just extracting the RPU and applying that to the HDR10 only (non-DV) blu-ray version of the same movie? Am I understanding this correctly?

[mulucy]

I just did myself a DV version of the Star Wars New Hope UHD bluray and it looks great!! Very noticeable upgrade in quality(even on the camera comparison) and the luminance /color looks the same as the original profile 5.

So you are taking a streaming/web-dl version of a movie that has an HDR10 base layer plus RPU and just extracting the RPU and applying that to the HDR10 only (non-DV) blu-ray version of the same movie? Am I understanding this correctly?

Streaming Web-DL Profile 5 lacks the HDR10. That's why you need to convert it to Profile 8, which is HDR10 backwards compatible. Then use the RPU from Profile 8 and inject it to HDR10 base layer from the UHD Disk. This will retain the same color and luminance, but it will increase the bitrate since the base layer is from UHD Disk.

[Lapihin_A]

Maybe a better comparison would be taking the profile 5 RPU from one of the Disney+ Marvel or Star Wars films

I just did myself a DV version of the Star Wars New Hope UHD bluray and it looks great!! Very noticeable upgrade in quality(even on the camera comparison) and the luminance /color looks the same as the original profile 5.
https://screenshotcomparison.com/comparison/16048

for those who want to do the same, you have to remove 39 frames from the beginning and add 39 frames at the end. Then the lossless Atmos needs a negative 1627MS delay.
It plays flawlessly on the x700, the shield, and the C8 internal app. I only watched a couple of minutes though but I plan to watch the whole movie this weekend.
The first scene with all the bright white walls is great to expose the shield red push as well, I noticed it right away. The original P5 is clean.

amazing work @Quietvoid

Code: Select all

Video
ID                                       : 4117 (0x1015)
Menu ID                                  : 1 (0x1)
Format                                   : HEVC
Format/Info                              : High Efficiency Video Coding
Format profile                           : Main 10@L5.1@High
HDR format                               : Dolby Vision, Version 1.0, dvhe.08.06, BL+RPU, HDR10 compatible / SMPTE ST 2086, HDR10 compatible
Codec ID                                 : 36
Duration                                 : 2 h 4 min
Bit rate                                 : 51.3 Mb/s
Width                                    : 3 840 pixels
Height                                   : 2 160 pixels
Display aspect ratio                     : 16:9
Frame rate                               : 23.976 (24000/1001) FPS
Color space                              : YUV
Chroma subsampling                       : 4:2:0 (Type 2)
Bit depth                                : 10 bits
Bits/(Pixel*Frame)                       : 0.258
Stream size                              : 44.6 GiB (91%)
Color range                              : Limited
Color primaries                          : BT.2020
Transfer characteristics                 : PQ
Matrix coefficients                      : BT.2020 non-constant
Mastering display color primaries        : BT.2020
Mastering display luminance              : min: 0.0001 cd/m2, max: 1000 cd/m2

Audio #1
ID                                       : 4352 (0x1100)
Menu ID                                  : 1 (0x1)
Format                                   : MLP FBA AC-3 16-ch
Format/Info                              : Meridian Lossless Packing FBA with 16-channel presentation
Commercial name                          : Dolby TrueHD with Dolby Atmos
Muxing mode                              : Stream extension
Codec ID                                 : 131
Duration                                 : 2 h 4 min
Bit rate mode                            : Variable
Bit rate                                 : 640 kb/s
Maximum bit rate                         : 3 705 kb/s
Channel(s)                               : 8 channels
Channel layout                           : L R C LFE Ls Rs Lb Rb
Sampling rate                            : 48.0 kHz
Frame rate                               : 31.250 FPS (1536 SPF)
Compression mode                         : Lossless
Stream size                              : 571 MiB (1%)
Language                                 : English
Service kind                             : Complete Main
Number of dynamic objects                : 13
Bed channel count                        : 1 channel
Bed channel configuration                : LFE

RESET_9999 please tell me where did you get Star Wars New Hope WEB-DL DV?

[ragico]

Maybe a better comparison would be taking the profile 5 RPU from one of the Disney+ Marvel or Star Wars films

I just did myself a DV version of the Star Wars New Hope UHD bluray and it looks great!! Very noticeable upgrade in quality(even on the camera comparison) and the luminance /color looks the same as the original profile 5.
https://screenshotcomparison.com/comparison/16048

for those who want to do the same, you have to remove 39 frames from the beginning and add 39 frames at the end. Then the lossless Atmos needs a negative 1627MS delay.
It plays flawlessly on the x700, the shield, and the C8 internal app. I only watched a couple of minutes though but I plan to watch the whole movie this weekend.
The first scene with all the bright white walls is great to expose the shield red push as well, I noticed it right away. The original P5 is clean.

amazing work @Quietvoid

Code: Select all

Video
ID                                       : 4117 (0x1015)
Menu ID                                  : 1 (0x1)
Format                                   : HEVC
Format/Info                              : High Efficiency Video Coding
Format profile                           : Main 10@L5.1@High
HDR format                               : Dolby Vision, Version 1.0, dvhe.08.06, BL+RPU, HDR10 compatible / SMPTE ST 2086, HDR10 compatible
Codec ID                                 : 36
Duration                                 : 2 h 4 min
Bit rate                                 : 51.3 Mb/s
Width                                    : 3 840 pixels
Height                                   : 2 160 pixels
Display aspect ratio                     : 16:9
Frame rate                               : 23.976 (24000/1001) FPS
Color space                              : YUV
Chroma subsampling                       : 4:2:0 (Type 2)
Bit depth                                : 10 bits
Bits/(Pixel*Frame)                       : 0.258
Stream size                              : 44.6 GiB (91%)
Color range                              : Limited
Color primaries                          : BT.2020
Transfer characteristics                 : PQ
Matrix coefficients                      : BT.2020 non-constant
Mastering display color primaries        : BT.2020
Mastering display luminance              : min: 0.0001 cd/m2, max: 1000 cd/m2

Audio #1
ID                                       : 4352 (0x1100)
Menu ID                                  : 1 (0x1)
Format                                   : MLP FBA AC-3 16-ch
Format/Info                              : Meridian Lossless Packing FBA with 16-channel presentation
Commercial name                          : Dolby TrueHD with Dolby Atmos
Muxing mode                              : Stream extension
Codec ID                                 : 131
Duration                                 : 2 h 4 min
Bit rate mode                            : Variable
Bit rate                                 : 640 kb/s
Maximum bit rate                         : 3 705 kb/s
Channel(s)                               : 8 channels
Channel layout                           : L R C LFE Ls Rs Lb Rb
Sampling rate                            : 48.0 kHz
Frame rate                               : 31.250 FPS (1536 SPF)
Compression mode                         : Lossless
Stream size                              : 571 MiB (1%)
Language                                 : English
Service kind                             : Complete Main
Number of dynamic objects                : 13
Bed channel count                        : 1 channel
Bed channel configuration                : LFE

As always I am behind with technicals.
I want to try this, Can you explain in easy words how to add 39 frames and remove 39 frames? And these frames add/remove should be done on HDR 10 track? Which program you need to add/remove frames?
And also how do you know that you had to remove/add 39 frames? Is this for this particular film or it applies to all films?
Thanks

[RESET_9999]

As always I am behind with technicals.
I want to try this, Can you explain in easy words how to add 39 frames and remove 39 frames? And these frames add/remove should be done on HDR 10 track? Which program you need to add/remove frames?
And also how do you know that you had to remove/add 39 frames? Is this for this particular film or it applies to all films?
Thanks

yeah, this is the complicated part and I'm not sure my English is good enough to write a step-by-step procedure and maybe there's an easier way. If so please someone share the method. Perhaps it would be easier just to screen-capture myself doing it ? I'll do that if you don't understand what I'm trying to explain here.
anyway, AFAIK, you can only split a video stream at keyframes and the chances that frame #39 is a keyframe are low.

So roughly:
First, you find out if there's a frame difference between the disc and the web-dl. I use MPC-BE and control left/right arrow and control-G for that.
Then you have to split the first few seconds and re-encode it which allows you to remove as much frame as you want(i use staxrip/x265 for that).


for some movies , you will have to add frames, in some other movies it will be the same. For the encoding part I tried to use bluray compliant settings (based on AVC bluray specs):

Code: Select all

--crf 15 --preset slower --output-depth 10 --master-display "G(13250,34500)B(7500,3000)R(34000,16000)WP(15635,16450)L(10000000,0)" --max-cll "0,0" --hdr10 --colorprim bt2020 --colormatrix bt2020nc --transfer smpte2084 --max-luma 1023 --hdr10-opt --no-info --chromaloc 2 --keyint 24 --min-keyint 1 --profile main10 --level-idc 51 --high-tier --aud --sar 1 --hrd --repeat-headers --no-open-gop --ref 5 --rc-lookahead 24 --aq-mode 1 --vbv-maxrate 98000 --vbv-bufsize 98000

if you have to create black frames(25 in this example), here's the vapoursynth staxrip script: (you could also just cut some random black frames in the movie itself)

Code: Select all

clip2 = core.ffms2.Source(r"%source_file%", cachefile = r"%source_temp_file%.ffindex")
clip1 = core.std.BlankClip(clip2,length=25)
clip = clip1+clip2

[quietvoid]

I just did myself a DV version of the Star Wars New Hope UHD bluray and it looks great!! Very noticeable upgrade in quality(even on the camera comparison) and the luminance /color looks the same as the original profile 5.
https://screenshotcomparison.com/comparison/16048

Thanks for this.
To me there seems to be a slight tint change (so maybe whitebalance difference).
Would be pretty complicated to tell if it's just because the HDR10 version was encoded differently.

Also, you shouldn't be reencoding anything at all!
The dovi_tool editor can be used to remove and duplicate metadata so that it matches your second video.

For your example:

you have to remove 39 frames from the beginning and add 39 frames at the end

This can be done with an edit JSON like this:

Code: Select all

{
    "remove": [
        "0-38"
    ],
    "duplicate": [
        {
            "source": last_frame - 1,
            "offset": last_frame - 1,
            "length": 40
        }
    ]
}

For duplicating, the source is a frame number to use the metadata from.
Offset is where the metadata is added back (inclusive) and length is the number of times the same metadata is added.

You can play with the edit until the RPU length matches the video file you're injecting into.

[RESET_9999]

damn I wish I knew that last night lol
thank you so much.

[manuelrn]

I just did myself a DV version of the Star Wars New Hope UHD bluray and it looks great!! Very noticeable upgrade in quality(even on the camera comparison) and the luminance /color looks the same as the original profile 5.
https://screenshotcomparison.com/comparison/16048

Thanks for this.
To me there seems to be a slight tint change (so maybe whitebalance difference).
Would be pretty complicated to tell if it's just because the HDR10 version was encoded differently.

Also, you shouldn't be reencoding anything at all!
The dovi_tool editor can be used to remove and duplicate metadata so that it matches your second video.

For your example:

you have to remove 39 frames from the beginning and add 39 frames at the end

This can be done with an edit JSON like this:

Code: Select all

{
    "remove": [
        "0-38"
    ],
    "duplicate": [
        {
            "source": last_frame - 1,
            "offset": last_frame - 1,
            "length": 40
        }
    ]
}

For duplicating, the source is a frame number to use the metadata from.
Offset is where the metadata is added back (inclusive) and length is the number of times the same metadata is added.

You can play with the edit until the RPU length matches the video file you're injecting into.

Shouldn't the "length" value be 39 instead of 40?

Or is it necessary to apply +1 to the "length" value because the "offset" frame is removed (it is replaced by the new generated frames)?


And another question:
Why are the new frames added before the last frame (and the last frame remains intact) instead of being added at the end of the RPU? (In other words, why last_frame - 1 instead of just last_frame)

Thank you so much for everything!