mulucy wrote: Mon Mar 30, 2020 1:19 am
shawnc22 wrote: Sun Mar 29, 2020 10:14 pm
jcdr428 wrote: Sun Mar 29, 2020 9:31 pm
I understand that the Shield reads only DV marked as profile 5. However Blu-ray profile 7 dual tracks changed to single tracks should be profile 8 and not profile 5, as the BL is BT.2100 and not Dolby IPT colorspace. The Shield SoC seems to be able to read any DV as long as it is marked profile 5, so this is something that should be addressed by NVidia in a firmware rather than allowing to disseminate non-compliant DV files.
I think the Shield is good with reading single track+dual layer dv profile 4, and single track+single layer profile 5 and 8 videos. Dual track+dual layer profile 7 videos have always been the problem, hence yusecope's tool to merge the tracks but keep the layers still separate (or the -mode 2 option to also merge the layers). The issue somebody was having was with an Apple TV 4k not reading a ST+SL file in prof 8, but when the same video track is remuxed in 5, it'd work perfectly. Probably an issue with the Apple TV not supporting prof 8
Apple TV 4K only supports Profile 5. Apparently, the all-new Shield TV supports Profile 4 and 5. And with Profile 4, you get both: single track dual layer and single track single layer and all with lossless audio and ATMOS/DTS-X.
Sorry I am new to all this. Trying to learn more and making my way through the long thread. But maybe someone can answer my question real quick.
Question about Audio Coding 3 + Meridian Lossless Packing Dolby TrueHD with Atmos. Is this lossless audio or Lossy audio?
I am not sure what the answer is. The wonder woman Media info detail shows lossless and Shazam looks lossy to me but what does the AC3 + Meridian lossless packing do?
https://en.wikipedia.org/wiki/Dolby_TrueHD writes,
" Dolby TrueHD is a lossless multi-channel audio codec ... It is one of the successors to the Dolby Digital (AC-3) surround sound codec "
" Dolby TrueHD uses Meridian Lossless Packing (MLP) as its mathematical basis for compressing audio samples"
I discovered this forum from
https://forums.plex.tv/t/dolby-vision-d ... lex/561151 explaining the workflow/tools. Will using this method result in lossless audio that is not AC3 + Meridian lossless packing
TIA
-------------------------------------------------------------------------------------------------------------------
Wonder Woman media info audio file
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 : 2 h 21 min
Bit rate mode : Variable
Bit rate : 4 279 kb/s
Maximum bit rate : 7 509 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 : 4.22 GiB (29%)
Language : English
Default : Yes
Forced : No
Number of dynamic objects : 11
--------------------------------------------------------------------------------------------------------------------------------------------------------------
General
ID : 1 (0x1)
Complete name : B:\Media\Blu-Ray_Movies\Shazam! (2019) - 2160p Dolby Vision Atmos\Shazam! (2019) - 2160p Dolby Vision Atmos.m2ts
Format : BDAV
Format/Info : Blu-ray Video
File size : 78.7 GiB
Duration : 2 h 11 min
Overall bit rate mode : Variable
Overall bit rate : 85.5 Mb/s
Maximum Overall bit rate : 35.5 Mb/s
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+EL+RPU / SMPTE ST 2086, HDR10 compatible
Codec ID : 36
Duration : 2 h 11 min
Bit rate : 81.7 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) : 0.411
Stream size : 75.2 GiB (96%)
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 : 1351 cd/m2
Maximum Frame-Average Light Level : 384 cd/m2
Audio
ID : 4352 (0x1100)
Menu ID : 1 (0x1)
Format :
AC-3 MLP FBA 16-ch
Format/Info :
Audio Coding 3 + 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 11 min
Bit rate mode : Variable
Bit rate : 448 kb/s
Maximum bit rate : 5 931 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 :
Lossy
Stream size : 422 MiB (1%)
Language : English
Service kind : Complete Main
Number of dynamic objects : 15
Bed channel count : 1 channel
Bed channel configuration : LFE