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Old 21st August 2019, 20:22   #1661  |  Link
Zenitram
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Quote:
Originally Posted by mariner View Post
ARIB STD-B67 [...] PQ [...] But mediainfo only show vp92 for the downloaded clips
vp92 is not on the same line as ARIB STD-B67 or PQ, so misleading report.
I guess that you mean that "vp92" files (actually "VP9" content, I guess, and vp92 is just not recognized by MediaInfo so displayed as is) don't have transfer_characteristics related info.

Please provide a file (not a link to a youtube channel page).
If I read well the VP9 spec, HDR10+ info is in the container (WebM) and it would be relevant for me to support that (WebM still used by Google), currently it is not supported (looks like they don't use the same method than Matroska), but if it is in the VP9 bitstream I would be less motivated (VP9 is abandoned in favor of AV1...)
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Old 21st August 2019, 20:27   #1662  |  Link
SeeMoreDigital
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Quote:
Originally Posted by Zenitram View Post
"MLP FBA" is the technical name preferred by Dolby Inc for naming this technology, and we list "TrueHD" as the commercial name now.
I wonder why Dolby went for that?!

I recently found this Dolby TrueHD high-level bitstream description - Dolby Developer [.pdf file] documentation but I can't seem to find out what FBA stands for...
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Old 22nd August 2019, 11:07   #1663  |  Link
Zenitram
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Quote:
Originally Posted by SeeMoreDigital View Post
I can't seem to find out what FBA stands for...
You see in that doc "referred to in this document as the FBA syntax." ;-)

FBA and FBB are the last 12 bits of the magic sync value (0xF8726FBA / 0xF8726FBB).
IIUC FBB syntax is the first one (before Dolby buys Meridian Audio related technology) then Dolby updated the bistream syntax and has set FBA instead of FBB in the magic value for their version.

I don't have access to Meridian FBB spec, so difficult to know the exact purpose of the modified bit (was it planned or not? ...), but I was said that technical people working on MLP use the "FBA" term for speaking about the Dolby version.
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Old 16th September 2019, 22:27   #1664  |  Link
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Quote:
Originally Posted by Selur View Post
Small question about 'MasteringDisplay_ColorPrimaries', what to use for R, G, B, WP, when it only reports 'Display P3'?
The only solution i know for100% correct values is to index the file with DGIndexNV and look at the MASTERING Line. Problem, you need a Nvidea GTX 1050 or higher.
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Old 24th September 2019, 02:59   #1665  |  Link
mariner
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Quote:
Originally Posted by Zenitram View Post
vp92 is not on the same line as ARIB STD-B67 or PQ, so misleading report.
I guess that you mean that "vp92" files (actually "VP9" content, I guess, and vp92 is just not recognized by MediaInfo so displayed as is) don't have transfer_characteristics related info.

Please provide a file (not a link to a youtube channel page).
If I read well the VP9 spec, HDR10+ info is in the container (WebM) and it would be relevant for me to support that (WebM still used by Google), currently it is not supported (looks like they don't use the same method than Matroska), but if it is in the VP9 bitstream I would be less motivated (VP9 is abandoned in favor of AV1...)
Thanks for the kind reply, Zenitram.
Both PQ and HLG are now reported correctly for these vp92 clips. Many thanks and best regards,
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Old 18th October 2019, 19:50   #1666  |  Link
Atak_Snajpera
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Why DTS-MA is reported as DTS instead of DTS XLL?
Code:
MediaInfoA_Get(Handle_, streamkind, 0, PChar('Format'), 1, 0)
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Old 18th October 2019, 21:26   #1667  |  Link
stax76
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Post full media of that file.
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Old 19th October 2019, 15:32   #1668  |  Link
Atak_Snajpera
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Quote:
Originally Posted by stax76 View Post
Post full media of that file.
Code:
General
ID                                       : 1 (0x1)
Complete name                            : E:\_Video_Samples\m2ts\Wanted_DTSMA.m2ts
Format                                   : BDAV
Format/Info                              : Blu-ray Video
File size                                : 102 MiB
Duration                                 : 33 s 200 ms
Overall bit rate mode                    : Variable
Overall bit rate                         : 25.7 Mb/s
Maximum Overall bit rate                 : 35.5 Mb/s

Video
ID                                       : 4113 (0x1011)
Menu ID                                  : 1 (0x1)
Format                                   : AVC
Format/Info                              : Advanced Video Codec
Format profile                           : High@L4.1
Format settings                          : CABAC / 4 Ref Frames
Format settings, CABAC                   : Yes
Format settings, Reference frames        : 4 frames
Codec ID                                 : 27
Duration                                 : 32 s 616 ms
Bit rate mode                            : Variable
Maximum bit rate                         : 32.3 Mb/s
Width                                    : 1 920 pixels
Height                                   : 1 080 pixels
Display aspect ratio                     : 16:9
Frame rate                               : 23.976 (24000/1001) FPS
Color space                              : YUV
Chroma subsampling                       : 4:2:0
Bit depth                                : 8 bits
Scan type                                : Progressive
Color range                              : Limited
Color primaries                          : BT.709
Transfer characteristics                 : BT.709
Matrix coefficients                      : BT.709

Audio
ID                                       : 4352 (0x1100)
Menu ID                                  : 1 (0x1)
Format                                   : DTS XLL
Format/Info                              : Digital Theater Systems
Commercial name                          : DTS-HD Master Audio
Muxing mode                              : Stream extension
Codec ID                                 : 134
Duration                                 : 32 s 853 ms
Bit rate mode                            : Variable
Channel(s)                               : 6 channels
Channel layout                           : C L R Ls Rs LFE
Sampling rate                            : 48.0 kHz
Frame rate                               : 93.750 FPS (512 SPF)
Bit depth                                : 24 bits
Compression mode                         : Lossless
Delay relative to video                  : 3 ms
Language                                 : English
However MediaInfoA_Get returns just DTS string.

Last edited by Atak_Snajpera; 19th October 2019 at 15:34.
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Old 28th October 2019, 22:57   #1669  |  Link
stax76
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It's because 'Format' shows the format family name. Take a look at the raw view:

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Old 6th November 2019, 12:52   #1670  |  Link
stax76
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The raw text summary has a column width limit of 32 characters, larger parameters are trimmed:

Code:
MasteringDisplay_ColorPrimaries_ : Stream
MasteringDisplay_Luminance_Sourc : Stream
I would like to request the removal of this limit by increasing the column width from 32 to 40 like in normal view:

Code:
MasteringDisplay_ColorPrimaries_Source   : Stream
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