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+--- Thread: Jellyfin on FireTV transcoding 2.0 FLAC to AAC? (/t-jellyfin-on-firetv-transcoding-2-0-flac-to-aac)
Jellyfin on FireTV transcoding 2.0 FLAC to AAC? - TheJellyMan - 2025-11-27
Last night I tried playing a large remux file from Bluray. All of the audio tracks are in FLAC, yet for some reason Jellyfin was still transcoding. This caused about a frame of severe pixelated distortion every 5 minutes or so, which was super annoying. I checked the logs and the admin dashboard, it looks like Jellyfin was transcoding the FLAC audio to AAC:
Stream mapping:
Stream #0:0 -> #0:0 (hevc (native) -> hevc (hevc_vaapi))
Stream #0:1 -> #0:1 (flac (native) -> aac (libfdk_aac))
Why is that? I thought FLAC was supported. I watched a different remux the other day with mono FLAC audio and didn't notice any issues with playback.