Dolby Vision now possible through MP4 Mux.

[MartyMcNuts]

Has anyone tried the AM8 Pro with the Amlogic S928X-J soc? Does this play DV P7 MEL/FEL mkv files via NAS streaming? Is it possible to dual boot and use CoreElec or LibreElec?

[anta777]

@RESET_9999

Why DV5 better DV8 ?

True:
DV5 brightness 0-1023 chroma 0-1023
DV8 brightness 64-940 chroma 64-960

DV5=1,15*DV8 video bitrate.

Netflix DV5 video bitrate 17,5 Mbit.

Because DV8 videobitrate >20,125 Mbit better than DV5.

[RESET_9999]

Why DV5 better DV8 ?

it uses a more efficient colorspace.

https://youtu.be/DcN6a57DYAc?t=799

[ArArdin]

I wonder if saying P5 is better over P8 just by comparing specs and bitrates is a real-world thing. Maybe it's more fair to express "better" in terms of perception of delivered quality. P5's full range and use of proprietary colorspace carrying potential, one still has to wait & see how bad/well this potential is used on delivery. Streaming services have horribly proofed themselves to - and still do - deliver terrible quality (and not only in DoVi) on a regular base. For this sake of lower bandwith they still simply often compress video too much. I have done some dovibaker x265 HDR encodings from disc-sourced material which quality obliterates that of any P5 stream of same video. Just saying. P8, MEL (and even FEL) are no guarantee to provide with a "better" picture of course, but in my viewing experience overall Dolby Vision quality on - or derived from - disc still rules. And not by a bit.

[RESET_9999]

yeah I agree. Streaming services have horrible encoding quality most of the time, especially itunes and Amazon. It's never just about the bitrate, the encode settings matter big time.

[texwatson]

Has anyone tried the AM8 Pro with the Amlogic S928X-J soc? Does this play DV P7 MEL/FEL mkv files via NAS streaming? Is it possible to dual boot and use CoreElec or LibreElec?

It's been tried. No Coreelec yet and no DV P7.

[MartyMcNuts]

Has anyone tried the AM8 Pro with the Amlogic S928X-J soc? Does this play DV P7 MEL/FEL mkv files via NAS streaming? Is it possible to dual boot and use CoreElec or LibreElec?

It's been tried. No Coreelec yet and no DV P7.

Ok, thanks. I'll wait for a bit and hopefully it will be supported soon.

[Mrmorrison]

Hi everyone.
I have a TV that does not support LED TV. Nits less than 1000.

If I buy Ugoos, am I right? Or would LLDV be broken in my case?

Second question:

My TV is Android and with Kodi I can play all DV profiles up to 7 MEL. I would only use Ugoos for 7 Fel.

But if for example I have a dv 8 film, should I always prefer the internal app on the TV or can I choose Ugoos?

[spl147]

If I understand correctly, the three best devices are the following:

UGOOS AM6B plus
UGOOS AM6 plus
Minix u22x-j max

Is this correct? What's the difference between them and is there any recommendation for the one best option?

UGOOS AM6B plus = WiFi6, Metal case better cooling, smaller footprint
UGOOS AM6 plus = WiFi5, Metal case better cooling, smaller footprint
Minix u22x-j max = WiFi5, Plastic case

the AM6B Plus can be had on Aliexpress for $160 shipped direct from Ugoos

[kazuma]

RESET_9999 how is your experience going with the ugoos? please inform us if you find new advantages/disadvantages. because you are most advanced user of the world of this box

[RESET_9999]

I updated the playback device spreadsheet just a few days ago, check it out

[ArArdin]

I updated the playback device spreadsheet just a few days ago, check it out

In the dual-track dual-layer support column, I noticed mkv being mentioned. Is DTDL possible in matroska nowadays?

[RESET_9999]

It's supported when the 2nd layer has the dv flag (sidedata) and AFAIK, the only way to get that is by muxing a DT MP4.

[ArArdin]

It's supported when the 2nd layer has the dv flag (sidedata) and AFAIK, the only way to get that is by muxing a DT MP4.

Is there a guide somewhere on how to create such DTDL mkv when I have a DTDL MP4, or even already separate BL and EL+RPU? Can this be directly done in MKVToolNix?

[RESET_9999]

Is there a guide somewhere on how to create such DTDL mkv when I have a DTDL MP4, or even already separate BL and EL+RPU? Can this be directly done in MKVToolNix?

1- mux a DT-DL MP4 in mkvtoolnix
2- mux raw hevc layers in mkvtoolnix but this produces a dvhe.07.03 file instead of dvhe.07.06

Code: Select all

General

Complete name                            : D:\FEL TEST DT DL P7 CMV4.0 4000nits V3.mkv
Format                                   : Matroska
Format version                           : Version 4
File size                                : 25.3 MiB
Duration                                 : 1 min 0 s
Overall bit rate                         : 3 527 kb/s
Frame rate                               : 23.976 FPS
Writing application                      : mkvmerge v83.0 ('Circle Of Friends') 64-bit
Writing library                          : libebml v1.4.5 + libmatroska v1.7.1

Video #1
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                                 : V_MPEGH/ISO/HEVC
Duration                                 : 1 min 0 s
Bit rate                                 : 3 165 kb/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)                       : 0.016
Stream size                              : 22.7 MiB (90%)
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

Video #2
ID                                       : 2
Format                                   : HEVC
Format/Info                              : High Efficiency Video Coding
Format profile                           : Main 10@L5.1@High
HDR format                               : Dolby Vision, Version 1.0, Profile 7.6, dvhe.07.06, EL+RPU, no metadata compression, Blu-ray compatible / SMPTE ST 2086, Version HDR10, HDR10 compatible
Codec ID                                 : V_MPEGH/ISO/HEVC
Duration                                 : 1 min 0 s
Bit rate                                 : 293 kb/s
Width                                    : 1 920 pixels
Height                                   : 1 080 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)                       : 0.006
Stream size                              : 2.10 MiB (8%)
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

Code: Select all

Complete name                            : D:\00000.track_4113.mkv
Format                                   : Matroska
Format version                           : Version 4
File size                                : 381 MiB
Duration                                 : 1 min 0 s
Overall bit rate                         : 52.8 Mb/s
Frame rate                               : 23.976 FPS
Writing application                      : mkvmerge v83.0 ('Circle Of Friends') 64-bit
Writing library                          : libebml v1.4.5 + libmatroska v1.7.1

Video #1
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                                 : V_MPEGH/ISO/HEVC
Duration                                 : 1 min 0 s
Bit rate                                 : 52.7 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)                       : 0.265
Stream size                              : 381 MiB (100%)
Default                                  : Yes
Forced                                   : No
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
Maximum Content Light Level              : 694 cd/m2
Maximum Frame-Average Light Level        : 61 cd/m2

Video #2
ID                                       : 2
Format                                   : HEVC
Format/Info                              : High Efficiency Video Coding
Format profile                           : Main 10@L5.1@High
HDR format                               : Dolby Vision, Version 1.0, Profile 7.6, dvhe.07.03, BL+EL+RPU, no metadata compression, Blu-ray compatible / SMPTE ST 2086, Version HDR10, HDR10 compatible
Codec ID                                 : V_MPEGH/ISO/HEVC
Duration                                 : 1 min 0 s
Bit rate                                 : 69.3 kb/s
Width                                    : 1 920 pixels
Height                                   : 1 080 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)                       : 0.001
Stream size                              : 512 KiB (0%)
Default                                  : Yes
Forced                                   : No
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