idpseudonymous wrote: Sat May 09, 2020 6:50 pm
mulucy wrote: Mon Mar 30, 2020 1:19 am
shawnc22 wrote: Sun Mar 29, 2020 10:14 pm
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