WEBOS 25 fix Profile 7 Dolby Vision playback in MKV

[Mimiu]

As the title says, please fix ASAP playback of Profile 7 (FEL/MEL) inside Matroska (.mkv) container.

On WEB OS 24 it was working with backwards compatibility to HDR10 base layer - in other words the Dolby Vision was omitted.

Currently in WEBOS 25 the files won't work/play.

As LG started to support Profile 8 Dolby Vision from WEB OS 25 in MKV properly, this should be easy fix for LG. 

Example of MediaInfo of Profile 7:

 

Video
ID                                       : 1
Format                                   : HEVC
Format/Info                              : High Efficiency Video Coding
Format profile                           : Main [email protected]@High
HDR format                               : Dolby Vision, Version 1.0, Profile 7.6, dvhe.07.06, BL+EL+RPU, no metadata compression, Blu-ray compatible / SMPTE ST 2086, Version HDR10, HDR10 compatible
Codec ID                                 : V_MPEGH/ISO/HEVC
Duration                                 : 1 h 25 min
Bit rate                                 : 55.3 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)                       : 0.278
Stream size                              : 32.9 GiB (91%)
Language                                 : English
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              : 966 cd/m2
Maximum Frame-Average Light Level        : 223 cd/m2

Cheers and thank you.