Serviio

I have a video that, I guess, was encoded at something other than stereo. I don't have anything to play anything but stereo so I set the "transcoding" to "Downmix to stereo" but the video still won't play. When I look at the ffmpeg command in the log, it see it includes "-ac 6" if I run the command manually I get an error. If I change the "-ac 6" to "-ac 2" in the command and run it manually, it works just fine.

Why is the ffmpeg command run by serviio got "-ac 6" even though I told it to downmix to stereo?

I don't know where these options are stored, so I can't confirm that the option is really getting changed... but it says so in the GUI.

Or am I completely off track on this?

Any help appreciated.

what is the rest of the FFmpeg command, as file maybe sent to tv in native format ( no transcoding ).

also post ffmpeg -i of the original file

My apologies... kind of hard to troubleshoot with the small amount of information I gave in my previous post... I hope this will help!!
As you can see, in the first example I have "-ac 6" and it fails. The second time all I changed was "-ac 2" and it seems to work.

Serviio doesn't downmix AAC audio to stereo, as it didn't work with previous FFmpeg versions. I'll try again with the current version, but it might also be caused by your FFmpag having libaac linked to it (as that one might be used in a place of the built-in aac decoding and support downmixing).