AV1: Indicate usage of Film Grain Synthesis

[cjee21]

Samples:

General
Complete name                            : http://download.opencontent.netflix.com.s3.amazonaws.com/AV1/Chimera/Chimera-2397fps-AV1-10bit-3840x2160-12407kbps.obu
Format                                   : AV1
Format/Info                              : AOMedia Video 1
File size                                : 2.15 GiB

Video
Format                                   : AV1
Format/Info                              : AOMedia Video 1
Format profile                           : Main@L5.0
Width                                    : 3 840 pixels
Height                                   : 2 160 pixels
Display aspect ratio                     : 16:9
Color space                              : YUV
Bit depth                                : 10 bits
Color range                              : Limited

General
Complete name                            : http://download.opencontent.netflix.com.s3.amazonaws.com/AV1/Chimera/Chimera-2397fps-AV1-10bit-3840x2160-film-grain-synthesis-12209kbps.obu
Format                                   : AV1
Format/Info                              : AOMedia Video 1
File size                                : 2.12 GiB

Video
Format                                   : AV1
Format/Info                              : AOMedia Video 1
Format profile                           : Main@L5.0
Format settings                          : Film Grain Synthesis
Width                                    : 3 840 pixels
Height                                   : 2 160 pixels
Display aspect ratio                     : 16:9
Color space                              : YUV
Bit depth                                : 10 bits
Color range                              : Limited

General
Complete name                            : http://download.opencontent.netflix.com.s3.amazonaws.com/AV1/Sparks/Sparks-5994fps-AV1-10bit-3840x2160-5967kbps.obu
Format                                   : AV1
Format/Info                              : AOMedia Video 1
File size                                : 163 MiB

Video
Format                                   : AV1
Format/Info                              : AOMedia Video 1
Format profile                           : Main@L5.1
Width                                    : 3 840 pixels
Height                                   : 2 160 pixels
Display aspect ratio                     : 16:9
Color space                              : YUV
Bit depth                                : 10 bits
Color range                              : Limited

General
Complete name                            : http://download.opencontent.netflix.com.s3.amazonaws.com/AV1/Sparks/Sparks-5994fps-AV1-10bit-3840x2160-film-grain-synthesis-5520kbps.obu
Format                                   : AV1
Format/Info                              : AOMedia Video 1
File size                                : 151 MiB

Video
Format                                   : AV1
Format/Info                              : AOMedia Video 1
Format profile                           : Main@L5.1
Format settings                          : Film Grain Synthesis
Width                                    : 3 840 pixels
Height                                   : 2 160 pixels
Display aspect ratio                     : 16:9
Color space                              : YUV
Bit depth                                : 10 bits
Color range                              : Limited