Should I be able to play a single layer Dolby Vision in an mp4 container?

[raven-au 17]

Hi all,

As in the subject, using a Shield TV 2017, connected to a HDR10 compatible TV, where the SL DV says it's HDR10 compatible in its mediainfo display? 

 

Should this work?

Is DV playback from an mp4 container supported in Emby?

IOW do I need to do further investigation ...

[ebr 14913]

Hi.  Can you try with the beta version of the app?

 

[sooty234 266]

It won't play the DV because none of your devices support it. It will play the HDR10 (if available) instead.

[jrwalte 17]

and the HDR10 doesn't require the DV layer. It will work with just the movie video (at least when MakeMKV used to create MKV).

Also only the 2019 Shield supports DV

[raven-au 17]

7 hours ago, sooty234 said:

It won't play the DV because none of your devices support it. It will play the HDR10 (if available) instead.

Your making assumptions here.

The encoded videos have HDR10 compatible video and they play just fine in this case if using an mkv container.

 

All I wanted to know is if this case should work ok and ( I apologize for it in advance) because I have been playing around with the 2019 shield tube trying to understand the problems it has with play back I'm not in a position to be accurate enough to make any bug reports if in fact there are problems other than the shield tube playback.

Edited January 9, 2021 by raven-au

[raven-au 17]

1 hour ago, jrwalte said:

and the HDR10 doesn't require the DV layer. It will work with just the movie video (at least when MakeMKV used to create MKV).

Also only the 2019 Shield supports DV

Also not quite what I was asking.

The encoded videos play fine if they use an mkv container and they work on Shield TV 2017 and Shield TV 2019 tube connected to an HDR10 capable TV and on a Shield TV 2019 Pro connected to a DV capable TV, triggering DV with a visible improvident in quality if the original source quality (older shows that maybe haven't been remastered aren't all that good) and the scenes (darker scenes aren't so obviously improved) are appropriate.

 

But, as I said, I'm not in a position to make a problem report just yet.

[raven-au 17]

9 hours ago, ebr said:

Hi.  Can you try with the beta version of the app?

Thanks @ebr I'll try that.

Edited January 9, 2021 by raven-au

[sooty234 266]

17 hours ago, raven-au said:

Your making assumptions here.

No I'm not.

You asked:

On 1/8/2021 at 2:21 AM, raven-au said:

Hi all,

As in the subject, using a Shield TV 2017, connected to a HDR10 compatible TV, where the SL DV says it's HDR10 compatible in its mediainfo display? 

The answer to that is no, it's impossible.

HDR10 and Dolby vision are completely separate. One has nothing to do with the other, they are independent. 

Or did you intend to ask; If I have a single layer mp4 that has both HDR10 and Dolby Vision, and I play it with a Shield 2017 on an HDR10 TV, will the app select the HDR10 and ignore the Dolby Vision? Then the answer is, possibly, depending on the file multiplexing. It's been seen that it can work, but at present isn't a full guarantee. But they are working on it.

Edited January 9, 2021 by sooty234

[raven-au 17]

41 minutes ago, raven-au said:

But, as I said, I'm not in a position to make a problem report just yet.

So, to add a little more to this while I'm waiting for the beta ...

At some point I saw no video but that was a while ago and I think not consistent and my process for creating these video encodes was questionable.

But I'm starting to work out the process now and just prior to asking this question I had no sound for the TrueHD Atmos track consistently (I have an Atmos capable receiver on one TV and Atmos capable soundbars on two other TVs) while the mkv container worked fine.

 

To avoid the possible "why not just use an mkv container" I'll explain why it would be better if I could use an mp4 container instead.

I'm using DVDFab to create these encoded DV videos so they are (sometimes, depending on original content) much smaller than the copied original which was all that could be done as far as I knew previously.

But DVDFab only has an mp4 target profile and altering those profiles isn't straight forward so mp4 is the simplest way to go.

To create an mkv without loosing DV is a rather convoluted and somewhat lengthy process so it would be good to not need to do it if possible.

[raven-au 17]

8 minutes ago, sooty234 said:

Or did you intend to ask; If I have a single layer mp4 that has both HDR10 and Dolby Vision, and I play it with a Shield 2017 on an HDR10 TV, will the app select the HDR10 and ignore the Dolby Vision? Then the answer is, possibly, depending on the file multiplexing. It's been seen that it can work, but at present isn't a full guarantee. But they are working on it.

You make a good point here.

The DV support is fairly new, and I have seen inconsistent results, so there could be more problems with the playback other than no audio that require checking.

Hopefully I'll be able to help with working that out if there are problems with this.

[sooty234 266]

I have DVDfab, also. It's a bit hit and miss with DV stuff. You'll just have to test it. Also, is this a disc rip with Profile 7 DV?

[sooty234 266]

3 minutes ago, raven-au said:

The DV support is fairly new, and I have seen inconsistent results, so there could be more problems with the playback other than no audio that require checking.

I've got some single layer DV Pro 5 only, media. And the official Dolby Labs software won't play the audio for those. So it's a craps chute.

[raven-au 17]

1 minute ago, sooty234 said:

I've got some single layer DV Pro 5 only, media. And the official Dolby Labs software won't play the audio for those. So it's a craps chute.

Oh right.

All I can get using MakeMKV and using DVDFab on isos' I've created from my discs so far is profile 5, at least that's what they look like to me.

Quote

HDR format  : Dolby Vision, Version 1.0, dvhe.05.06, BL+RPU / SMPTE ST 2086, HDR10 compatible

 

I had read a discussion that questioned what DVDFab was doing and some test results on samples showed that the 10 bit HDR10 compatible DV video was closer to the 12 bit DV than it was to the 10 bit HDR video so it seemed worth encoding the DV videos I have, .

[sooty234 266]

I just grabbed an mp4 with DV 8.1 and HDR10 from the Dolby Developers page. It played correctly on my Shield 2017. i.e. It played the HDR10.

[raven-au 17]

I thought I'd seen a later DV version ... this is from the the recent (re-mastered) release of The Hobbit Trilogy ...

Quote

General
Unique ID                                : 248031002404117017222434017086969507518 (0xBA990891452AFE82A96CEC6FDD9C6EBE)
Complete name                            : /share/shadow/media/2/Movies/The Hobbit/The Hobbit An Unexpected Journey (2012)/The Hobbit An Unexpected Journey (2012) - 4K-HDR-DV.mkv
Format                                   : Matroska
Format version                           : Version 4
File size                                : 42.3 GiB
Duration                                 : 3 h 2 min
Overall bit rate mode                    : Variable
Overall bit rate                         : 33.1 Mb/s
Movie name                               : The Hobbit: An Unexpected Journey
Encoded date                             : UTC 2021-01-08 06:38:38
Writing application                      : mkvmerge v51.0.0 ('I Wish') 64-bit
Writing library                          : libebml v1.4.0 + libmatroska v1.6.2
 
Video
ID                                       : 1
ID in the original source medium         : 4117 (0x1015)
Format                                   : HEVC
Format/Info                              : High Efficiency Video Coding
Format profile                           : Main 10@L5.1@High
HDR format                               : Dolby Vision, Version 1.0, dvhe.07.00, EL+RPU, Blu-ray compatible / SMPTE ST 2086, HDR10 compatible
Codec ID                                 : V_MPEGH/ISO/HEVC
Duration                                 : 3 h 2 min
Bit rate                                 : 29.0 Mb/s
Width                                    : 3 840 pixels
Height                                   : 2 176 pixels
Original height                          : 2 160 pixels
Display aspect ratio                     : 16:9
Original 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)                       : 0.145
Stream size                              : 37.0 GiB (88%)
Language                                 : English
Default                                  : No
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: 0.0050 cd/m2, max: 4000 cd/m2
Maximum Content Light Level              : 801 cd/m2
Maximum Frame-Average Light Level        : 188 cd/m2
Original source medium                   : Blu-ray
 
Audio #1
ID                                       : 2
Format                                   : MLP FBA 16-ch
Format/Info                              : Meridian Lossless Packing FBA with 16-channel presentation
Commercial name                          : Dolby TrueHD with Dolby Atmos
Codec ID                                 : A_TRUEHD
Duration                                 : 3 h 2 min
Bit rate mode                            : Variable
Bit rate                                 : 3 403 kb/s
Maximum bit rate                         : 5 616 kb/s
Channel(s)                               : 8 channels
Channel layout                           : L R C LFE Ls Rs Lb Rb
Sampling rate                            : 48.0 kHz
Frame rate                               : 1 200.000 FPS (40 SPF)
Compression mode                         : Lossless
Stream size                              : 4.34 GiB (10%)
Title                                    : TrueHD 7.1 Atmos
Language                                 : English
Default                                  : No
Forced                                   : No
Number of dynamic objects                : 11
Bed channel count                        : 1 channel
Bed channel configuration                : LFE

 

[sooty234 266]

Yeah, that's Profile 7. Common on disc media