Dolby Vision now possible through MP4 Mux.

[RESET_9999]

I would like to know that as well... We should ask Stacey Spears since they used a 2mbps bitrate on the MEL version of their montage.
https://forum.blu-ray.com/showthread.ph ... 27&page=52

[quietvoid]

As far as I know, the difference is how the EL stream is encoded.
2mbps is a regular encode of a static grey image, while the lowest bitrate ones are simply zeroed out, resulting in a green output when decoded.

You can simply look at the bitstream and see a bunch of zeros in slices.
Regardless of method, the final output should be the same.

[mehgh750]

Hey, has anyone had any problems to get to play Spider-Man No Way Home DV P7 Framestor Remux in the Sony X700?
I converted the mkv to m2ts using latest nightly tsmuxer but the player freezes and shows a black screen, nothing ever plays.
Is there something I may be doing wrong? Thanks.

Normal... all the MEL 2mbps movies muxed in ST-DL wont work on the x700/x800m2 ( some fel movie as well).
If you demux and remux to DT-DL, it will work. You can also convert it to profile 8 since its a mel movie, you wont lose any quality.

@ RESET_9999
Does Sony X800M2 play profile 8 MKV? I thought it couldn't play DV MKV at all.

[RESET_9999]

Does Sony X800M2 play profile 8 MKV?

No, only TS/M2TS/MP4

[dompidu]

Hey, has anyone had any problems to get to play Spider-Man No Way Home DV P7 Framestor Remux in the Sony X700?
I converted the mkv to m2ts using latest nightly tsmuxer but the player freezes and shows a black screen, nothing ever plays.
Is there something I may be doing wrong? Thanks.

Normal... all the MEL 2mbps movies muxed in ST-DL wont work on the x700/x800m2 ( some fel movie as well).
If you demux and remux to DT-DL, it will work. You can also convert it to profile 8 since its a mel movie, you wont lose any quality.

Thanks so much, got it working. Regarding your scripts, which would be the options/steps to follow?

[RESET_9999]

Thanks so much, got it working. Regarding your scripts, which would be the options/steps to follow?

SL P8:
MODE.P7 ---> MODE.2 (p7 ST-DL to p8) ---> Workflow.4 (P7 ST-DL to P8)

or

DT-DL P7:
MODE.P7 ---> MODE.3 (p7 ST-DL to DT-DL) ---> Workflow.4 (P7 ST-DL to DT-DL)

[Omni4]

@RESET_9999

First of all: Thanks for all your hard work!!
I'm converting the Dolby Vision demos from Dolby UHD Blu-Ray Demo Disc (March 2018) with your DoVi Scripts. I play them with Kodi on my Sony TV via USB, works like a charm.
I have a bug report and a request:
When I use MP4_muxer(p5/P8/P7) > dual-track (p7) > MPLS P7 bluray to DT-DL + EAC3 ... only the 1080p track has Dolby Vision.
And the request: Can you add the option to extract and mux the DD+ 7.1 tracks in MPLS P7 bluray to P8 and MKV P7 to P8?

Cheers,
Omni4

[RESET_9999]

When I use MP4_muxer(p5/P8/P7) > dual-track (p7) > MPLS P7 bluray to DT-DL + EAC3 ... only the 1080p track has Dolby Vision.

Hi, that is how dual-track dual-layer P7 DoVi works. The DV metadata/layer is stored in the 1080p stream and merged with the 2160p stream at playback.

And the request: Can you add the option to extract and mux the DD+ 7.1 tracks in MPLS P7 bluray to P8 and MKV P7 to P8?

DD+ 7.1 tracks are kind of rare, so I'm not sure I will ever add support for that.
Not ideal but you could just convert the bluray to P8, demux 7.1 audio with tsmuxer, and then build your P8 mp4 with 7.1 audio.

convert BD to P8 HEVC:
MODE.P7 ----> MODE.1 ----> Workflow.2

then build your P8 mp4 with 7.1 audio:
MODE.M4 ----> MODE.1 ----> Workflow.2

[Omni4]

Thanks for the explanation and tip!

[DolbyVisionFTW]

@RESET_9999 or indeed any other knowledgeable person regarding Dolby Vision.

Is there likely to be any difference in video quality between a retail 4K UHD Blu-ray release that includes Dolby Vision and a Hybrid release combining the non-Dolby Vision 4K UHD Blu-ray plus RPU from a Dolby Vision WEB-DL of the same title?

Thanks.

[staknhalo]

@RESET_9999 or indeed any other knowledgeable person regarding Dolby Vision.

Is there likely to be any difference in video quality between a retail 4K UHD Blu-ray release that includes Dolby Vision and a Hybrid release combining the non-Dolby Vision 4K UHD Blu-ray plus RPU from a Dolby Vision WEB-DL of the same title?

Thanks.

ignoring any bitrate differences, in terms of just 'dolby vision dynamic effects' - if the original uhd is only mel and not fel, then there shouldn't be any real difference between a 'p8 custom' and 'uhd mel'

[redoine322]

Hello Guys could get this to work followed the main Post steps without luck the MP4Muxer just stuck with no disk usage could any one help please !!

[nekno]

@RESET_9999 or indeed any other knowledgeable person regarding Dolby Vision.

Is there likely to be any difference in video quality between a retail 4K UHD Blu-ray release that includes Dolby Vision and a Hybrid release combining the non-Dolby Vision 4K UHD Blu-ray plus RPU from a Dolby Vision WEB-DL of the same title?

Thanks.

ignoring any bitrate differences, in terms of just 'dolby vision dynamic effects' - if the original uhd is only mel and not fel, then there shouldn't be any real difference between a 'p8 custom' and 'uhd mel'

I've noticed there is likely to be a difference.

If you're converting UHD BD P7 MEL -> P8.1 then there shouldn't be any difference. The EL of an MEL is just an unused video stream used to carry the RPU, so BL+MEL+RPU (P7 MEL) is basically equivalent to BL+RPU (P8.1).

But DolbyVisionFTW is asking about applying a P5 RPU to a UHD BD HDR10 BL.

The RPU contains metadata about changes in brightness from scene to scene.

A P5 RPU is ordinarily applied to a BL encoded with IPT, which encodes luminance and chrominance differently than HDR10.

So I'm hoping someone can explain in more detail how it should/shouldn't matter, but in my experience, applying a P5 RPU to an HDR10 BL does not yield the same results as a P7 RPU generated for an HDR10 BL in the DV mastering process.

I guess a true test, which I have not done, would be to compare the P5 RPU from a WEB-DL to the P7 RPU for a UHD BD release that did include DV.

[daylightcreative]

I have been scanning through this thread and find it fascinating and rather insightful. I've pulled down a few "HDR format : Dolby Vision, Version 1.0, dvhe.07.06, BL+EL+RPU" hybrid releases only to find they don't play in my setup. I was hoping someone familiar with this thread could sort of summarize the state of things where 'Dolby Vision' is concerned.

The WEB-DL DV releases play perfectly in my environment, but just not these newer releases, especially the hybrids.

I have three different DV TVs:
- Hisense 75A6G, Hisense 55A6G, TCL 65R646

All three have an NVIDIA Shield Pro 2019 connected to them, all through Atmos/Vision capable 4K AVRs. I use Plex primarily but I have Kodi with DV (https://forum.kodi.tv/showthread.php?tid=360018) installed on all three and use it occasionally.

Whenever I try and play any of these hybrids I always get HDR10 and never DV. I have seen in this thread users who have had success connecting directly to their TVs with USB.

Would someone undergo the labor of giving me the current "state of the union" where my setup is concerned?

[ArArdin]

Not ideal but you could just convert the bluray to P8, demux 7.1 audio with tsmuxer, and then build your P8 mp4 with 7.1 audio.

Wondering if that would work. I have never tried to remux 7.1 EAC3 from a blu-ray to mkv or mp4. Would the different build-up be accepted by either container?

For those who like to know, 7.1 EAC3 tracks don't always share the same construct. On (UHD)BD it's a bit of an oddball. It carries a mandatory, independent 5.1 AC3 core to be backwards compatible. And the core is a real core: the extra EAC3 data depends on it.
Oddly enough, what I've learnt is that the EAC3 part only contains four surround channels. If an EAC3 compatible decoder processes a 7.1 EAC3 stream from (UHD)BD, the two AC3 core surrounds are replaced by the two side - and two rear channels that are present in the additional EAC3 data.

Channels in EAC3 tracks offered by streaming services like Netflix are all real EAC3 encoded, and without a legacy core.

...but in my experience, applying a P5 RPU to an HDR10 BL does not yield the same results as a P7 RPU generated for an HDR10 BL in the DV mastering process.

I absolutely agree. In my early days of cross-injecting RPU, I've experienced significant differences between some HDR10 baselayers with P5 RPU and their native P7 RPU. I wonder if it's because of the different colorspace, or that P5 DV videos are a totally different DV grade because of whatever streaming-service reasons.