Privileges • Embi priviledges issue on TOS 6

Hi,
I am using TOS 6.0.229-00147 on F4-423
Installed Emby 4.8.8.0 from TOS App Store
Emby works, but failed to transcode citing permission denied error.
I have checked: emby user and media group have read/write access to shares where files are located.
Can anyone help please?
This effectively makes emby useless on any device that does not handle all possible codecs (eg: tv, browser)
thank you

Details:

NAS
F4-423
TOS 6.0.229-00147

Emby Info:

Operating System: Linux version 6.1.58+ (root@develop-136) (x86_64-tnas-linux-gnu-gcc.br_real (Buildroot 2023.08.1) 13.2.0, GNU ld (GNU Binutils) 2.40) #30 SMP PREEMPT_
OS/Process: x64/x64
Emby Server version: 4.8.8.0
Operating system: Unix 6.1.58.0
Command Line: /Volume1/@apps/emby/emby-server/system/EmbyServer.dll -programdata /Volume1/Emby -ffdetect /Volume1/@apps/emby/emby-server/bin/ffdetect -ffmpeg /Volume1/@apps/emby/emby-server/bin/ffmpeg -ffprobe /Volume1/@apps/emby/emby-server/bin/ffprobe -defaultdirectory /mnt/public -updatepackage emby_TOS5_APP_{version}_x86_64.tpk

EMBY ERROR in Log:

/Volume1/@apps/emby/emby-server/bin/ffmpeg -loglevel +timing -y -print_graphs_file "/Volume1/Emby/logs/ffmpeg-transcode-038a8a38-39ab-4e41-a6c4-44bdcbc81ff3_1graph.txt" -copyts -start_at_zero -f matroska,webm -i "/Volume3/Media/movies/Somemovie.mkv" -vn -an -sn -max_delay 5000000 -avoid_negative_ts disabled -f segment -map_metadata -1 -map_chapters -1 -segment_format mpegts -segment_list "/Volume1/Emby/transcoding-temp/03BE52/03BE52.m3u8" -segment_list_type m3u8 -segment_time 00:00:03.000 -segment_list_entry_prefix hls/03BE52/ -segment_start_number 0 -individual_header_trailer 0 -write_header_trailer 0 -segment_write_temp 1 "/Volume1/Emby/transcoding-temp/03BE52/03BE52_%d.ts"

12:44:09.828 ffmpeg version 5.1-emby_2023_06_25 Copyright (c) 2000-2022 the FFmpeg developers and softworkz for Emby LLC
12:44:09.828 built with gcc 10.3.0 (crosstool-NG 1.25.0)
12:44:09.828 Execution Date: 2024-08-18 12:44:09
12:44:09.829 /Volume3/Media/movies/Somemovie.mkv: Permission denied
12:44:09.829 EXIT

Permissions: