[Cin] trying to fix libopus for 5.1 sound

[Andrea paz]

> Can you also post output of mediainfo for both cases?
Here it is.
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NO PATCH:

General
Complete name                            : opus_test_no_patch.webm
Format                                   : WebM
Format version                           : Version 4
File size                                : 12.1 MiB
Duration                                 : 3 min 7 s
Overall bit rate                         : 541 kb/s
Writing application                      : Lavf61.1.100
Writing library                          : Lavf61.1.100

Video
ID                                       : 1
Format                                   : AV1
Format/Info                              : AOMedia Video 1
Format profile                           : Main at L3.0
Codec ID                                 : V_AV1
Duration                                 : 3 min 7 s
Width                                    : 720 pixels
Height                                   : 576 pixels
Display aspect ratio                     : 4:3
Frame rate mode                          : Variable
Color space                              : YUV
Chroma subsampling                       : 4:2:0
Bit depth                                : 8 bits
Default                                  : No
Forced                                   : No
Color range                              : Full
Matrix coefficients                      : BT.709

Audio
ID                                       : 2
Format                                   : Opus
Codec ID                                 : A_OPUS
Duration                                 : 3 min 7 s
Channel(s)                               : 6 channels
Channel layout                           : L R C Lb Rb LFE
Sampling rate                            : 48.0 kHz
Bit depth                                : 32 bits
Compression mode                         : Lossy
Language                                 : Italian
Default                                  : No
Forced                                   : No


PATCH:

General
Complete name                            : opus_test_patch.webm
Format                                   : WebM
Format version                           : Version 4
File size                                : 13.4 MiB
Duration                                 : 3 min 7 s
Overall bit rate                         : 600 kb/s
Writing application                      : Lavf61.1.100
Writing library                          : Lavf61.1.100

Video
ID                                       : 1
Format                                   : AV1
Format/Info                              : AOMedia Video 1
Format profile                           : Main at L3.0
Codec ID                                 : V_AV1
Duration                                 : 3 min 7 s
Width                                    : 720 pixels
Height                                   : 576 pixels
Display aspect ratio                     : 4:3
Frame rate mode                          : Variable
Color space                              : YUV
Chroma subsampling                       : 4:2:0
Bit depth                                : 8 bits
Default                                  : No
Forced                                   : No
Color range                              : Full
Matrix coefficients                      : BT.709

Audio
ID                                       : 2
Format                                   : Opus
Codec ID                                 : A_OPUS
Duration                                 : 3 min 7 s
Channel(s)                               : 6 channels
Channel layout                           : L R C Lb Rb LFE
Sampling rate                            : 48.0 kHz
Bit depth                                : 32 bits
Compression mode                         : Lossy
Language                                 : Italian
Default                                  : No
Forced                                   : No