Hello,
I opened the support ticket while ago (4-5 new versions back) for this issue (not solved):
If I try to download content from Skyshowtime (Five Nights at Freddy's in this case) and select multichannel audio (EN and CS in this case), video is downloaded, but with the EN audio only...

Format : Matroska
Format version : Version 4
File size : 6.28 GiB
Duration : 1 h 49 min
Overall bit rate : 8 216 kb/s
Frame rate : 23.976 FPS
Movie name : Pět nocí u Freddyho
Description : Animatronický teror potrápí hlídače poté, co začne pracovat na noční směny v pizzerii Freddyho Fazbeara.
Encoded date : 2025-05-09 05:10:24 UTC
Writing application : mkvmerge v68.0.0 ('The Curtain') 64-bit
Writing library : libebml v1.4.2 + libmatroska v1.6.4
Cover : Yes
Attachments : cover.png
Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L4
Format settings : CABAC / 3 Ref Frames
Format settings, CABAC : Yes
Format settings, Reference frames : 3 frames
Codec ID : V_MPEG4/ISO/AVC
Duration : 1 h 49 min
Bit rate : 7 830 kb/s
Width : 1 920 pixels
Height : 1 080 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
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.157
Stream size : 5.98 GiB (95%)
Writing library : x264 core 148 r236 a01e339
Encoding settings : cabac=1 / ref=3 / deblock=1:0:0 / analyse=0x3:0x113 / me=umh / subme=7 / psy=1 / psy_rd=0.00:0.00 / mixed_ref=1 / me_range=16 / chroma_me=1 / trellis=1 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=0 / threads=34 / lookahead_threads=5 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / bluray_compat=0 / constrained_intra=0 / bframes=2 / b_pyramid=0 / b_adapt=1 / b_bias=0 / direct=1 / weightb=1 / open_gop=0 / weightp=2 / keyint=48 / keyint_min=4 / scenecut=0 / intra_refresh=0 / rc_lookahead=48 / rc=2pass / mbtree=1 / bitrate=7830 / ratetol=1.0 / qcomp=0.60 / qpmin=10 / qpmax=51 / qpstep=4 / cplxblur=20.0 / qblur=0.5 / vbv_maxrate=11745 / vbv_bufsize=11745 / nal_hrd=none / filler=0 / ip_ratio=1.41 / aq=1:1.00
Default : Yes
Forced : No
Color range : Limited
Color primaries : BT.709
Transfer characteristics : BT.709
Matrix coefficients : BT.709
Audio
ID : 2
Format : E-AC-3
Format/Info : Enhanced AC-3
Commercial name : Dolby Digital Plus
Codec ID : A_EAC3
Duration : 1 h 49 min
Bit rate mode : Constant
Bit rate : 384 kb/s
Channel(s) : 6 channels
Channel layout : L R C LFE Ls Rs
Sampling rate : 48.0 kHz
Frame rate : 31.250 FPS (1536 SPF)
Compression mode : Lossy
Stream size : 301 MiB (5%)
Language : English
Service kind : Complete Main
Default : No
Forced : No
Dialog Normalization : -24 dB
compr : -0.28 dB
dmixmod : 3
ltrtcmixlev : -3.0 dB
ltrtsurmixlev : -3.0 dB
lorocmixlev : -3.0 dB
lorosurmixlev : -3.0 dB
dialnorm_Average : -24 dB
dialnorm_Minimum : -24 dB
dialnorm_Maximum : -24 dB
With Stereo (EAC3) selection the video is downloaded incl. both languages:
Format : Matroska
Format version : Version 4
File size : 6.13 GiB
Duration : 1 h 49 min
Overall bit rate : 8 024 kb/s
Frame rate : 23.976 FPS
Movie name : Pět nocí u Freddyho
Description : Animatronický teror potrápí hlídače poté, co začne pracovat na noční směny v pizzerii Freddyho Fazbeara.
Encoded date : 2025-05-09 05:26:09 UTC
Writing application : mkvmerge v68.0.0 ('The Curtain') 64-bit
Writing library : libebml v1.4.2 + libmatroska v1.6.4
Cover : Yes
Attachments : cover.png
Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L4
Format settings : CABAC / 3 Ref Frames
Format settings, CABAC : Yes
Format settings, Reference frames : 3 frames
Codec ID : V_MPEG4/ISO/AVC
Duration : 1 h 49 min
Bit rate : 7 830 kb/s
Width : 1 920 pixels
Height : 1 080 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
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.157
Stream size : 5.98 GiB (97%)
Writing library : x264 core 148 r236 a01e339
Encoding settings : cabac=1 / ref=3 / deblock=1:0:0 / analyse=0x3:0x113 / me=umh / subme=7 / psy=1 / psy_rd=0.00:0.00 / mixed_ref=1 / me_range=16 / chroma_me=1 / trellis=1 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=0 / threads=34 / lookahead_threads=5 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / bluray_compat=0 / constrained_intra=0 / bframes=2 / b_pyramid=0 / b_adapt=1 / b_bias=0 / direct=1 / weightb=1 / open_gop=0 / weightp=2 / keyint=48 / keyint_min=4 / scenecut=0 / intra_refresh=0 / rc_lookahead=48 / rc=2pass / mbtree=1 / bitrate=7830 / ratetol=1.0 / qcomp=0.60 / qpmin=10 / qpmax=51 / qpstep=4 / cplxblur=20.0 / qblur=0.5 / vbv_maxrate=11745 / vbv_bufsize=11745 / nal_hrd=none / filler=0 / ip_ratio=1.41 / aq=1:1.00
Default : Yes
Forced : No
Color range : Limited
Color primaries : BT.709
Transfer characteristics : BT.709
Matrix coefficients : BT.709
Audio #1
ID : 2
Format : E-AC-3
Format/Info : Enhanced AC-3
Commercial name : Dolby Digital Plus
Format settings : Dolby Surround
Codec ID : A_EAC3
Duration : 1 h 49 min
Bit rate mode : Constant
Bit rate : 96.0 kb/s
Channel(s) : 2 channels
Channel layout : L R
Sampling rate : 48.0 kHz
Frame rate : 31.250 FPS (1536 SPF)
Compression mode : Lossy
Stream size : 75.1 MiB (1%)
Language : English
Service kind : Complete Main
Default : No
Forced : No
Dialog Normalization : -24 dB
compr : 0.53 dB
dsurmod : Dolby Surround encoded
mixlevel : 105 dB
dialnorm_Average : -24 dB
dialnorm_Minimum : -24 dB
dialnorm_Maximum : -24 dB
Audio #2
ID : 3
Format : E-AC-3
Format/Info : Enhanced AC-3
Commercial name : Dolby Digital Plus
Format settings : Dolby Surround
Codec ID : A_EAC3
Duration : 1 h 49 min
Bit rate mode : Constant
Bit rate : 96.0 kb/s
Channel(s) : 2 channels
Channel layout : L R
Sampling rate : 48.0 kHz
Frame rate : 31.250 FPS (1536 SPF)
Compression mode : Lossy
Stream size : 75.1 MiB (1%)
Language : Czech
Service kind : Complete Main
Default : No
Forced : No
Dialog Normalization : -24 dB
compr : 0.53 dB
dsurmod : Dolby Surround encoded
mixlevel : 105 dB
dialnorm_Average : -24 dB
dialnorm_Minimum : -24 dB
dialnorm_Maximum : -24 dB
The issue is, that the czech audio is available only in stereo and not in 5.1. So SF downloads the english audio only.
I would like to see udio quality fallback feature, that will determine the available audio quality and downloads highest quality audio available for chosen language. I would like to download the video with 5.1 EN + 2.0 CS audio, but this combination is impossible to achieve in SF.
Tried all the versions of the SF to the newest one, but I had no luck...
Any thoughts about this issue ?