Playback error: h264 file with AC3 audio will not playback on swiftfin

[linuxnoob0009]

Just tried another file from another show. exact same problem. Strangely it seems that jellyfin wants to convert the eac3 audio to aac. why? can i fix this in the settings?

Stream #0:0(eng): Video: h264 (High), yuv420p(progressive), 1920x1080 [SAR 1:1 DAR 16:9], 23.98 fps, 23.98 tbr, 1k tbn (default)
Metadata:
BPS-eng : 5608741
DURATION-eng : 00:30:02.092000000
NUMBER_OF_FRAMES-eng: 43207
NUMBER_OF_BYTES-eng: 1263433624
_STATISTICS_WRITING_APP-eng: mkvmerge v55.0.0 ('Waiting For Space') 64-bit
_STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
Stream #0:1(eng): Audio: eac3, 48000 Hz, 5.1(side), fltp, 256 kb/s (default)
Metadata:
BPS-eng : 256000
DURATION-eng : 00:30:02.208000000
NUMBER_OF_FRAMES-eng: 56319
NUMBER_OF_BYTES-eng: 57670656
_STATISTICS_WRITING_APP-eng: mkvmerge v55.0.0 ('Waiting For Space') 64-bit
_STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES

Stream mapping:
Stream #0:0 -> #0:0 (copy)
Stream #0:1 -> #0:1 (eac3 (native) -> aac (libfdk_aac))
Press [q] to stop, [?] for help
Output #0, mpegts, to '/cache/transcodes/8662d50651764fbae0cb0f35a8358844.ts':
Metadata:
encoder : Lavf60.3.100
Stream #0:0: Video: h264 (High), yuv420p(progressive), 1920x1080 [SAR 1:1 DAR 16:9], q=2-31, 23.98 fps, 23.98 tbr, 90k tbn (default)
Stream #0:1: Audio: aac, 48000 Hz, 5.1, s16, 256 kb/s (default)
Metadata:
encoder : Lavc60.3.100 libfdk_aac