HanzoX7 8 Posted March 17, 2020 Share Posted March 17, 2020 I have a bunch of movies that have 5.1 AAC audio, which get sent to my receiver as 2.0 PCM. Is there an option or way to make Emby transcode 5.1 AAC to 5.1 AC3 to somewhat preserve multichannel audio? My receiver is connected over ARC. 2 Link to comment Share on other sites More sharing options...
rbjtech 4170 Posted March 17, 2020 Share Posted March 17, 2020 Pre-processing is an option to create and insert an AC3 track and make it the default track 0, created from the AAC 5.1 track 0 (which then becomes track 1) .. ffmpeg.exe -i input.mkv -map 0:v -map 0:a:0 -map 0:a -c:v copy -c:a copy -c:a:0 ac3 -disposition:a:0 default -disposition:a:1 0 output.mkv Quality may be an issue as you are going from an already compressed track to another compressed codec. 1 Link to comment Share on other sites More sharing options...
HanzoX7 8 Posted March 17, 2020 Author Share Posted March 17, 2020 I've used an AC3 encoder to do that separately, but it's a chore to be honest. It's mostly old movies that I ripped back when storage was expensive... their audio wasn't that great to begin with, so the quality loss isn't a major issue, at least for me. It would be great if there was an option for the player to do this automagically and perhaps have options for the bitrate for speed and hardware considerations. If I recall correctly, Kodi has this option. If not possible or will take a long time to develop / implement, it's not the end of the world. I can always use one of the fancy "surround sound" modes from the receiver. Link to comment Share on other sites More sharing options...
Luke 36884 Posted March 18, 2020 Share Posted March 18, 2020 Yes an option like this is possible for the future. It's something that has come up before. 1 Link to comment Share on other sites More sharing options...
av3nger 0 Posted April 20, 2020 Share Posted April 20, 2020 Yes an option like this is possible for the future. It's something that has come up before.Would love it. Like my 5.1 system, but also like the space savings/Bandwidth of AAC.The Transcode to AC3 option that Kodi possesses is a much needed feature of Emby. Link to comment Share on other sites More sharing options...
Richard Branches 227 Posted April 23, 2020 Share Posted April 23, 2020 This is a duplicate topic, I already requested this on oct 12 2018: https://emby.media/community/index.php?/topic/63959-transcode-aac-51-to-dolby-digital-51-if-two-conditions-are-met/ Link to comment Share on other sites More sharing options...
legierk 6 Posted December 14, 2023 Share Posted December 14, 2023 I assume this is a low priority issue. Seems to be a persistent issue for awhile now. Add me to the list of users who would like the capability to transcode aac to ac3. Link to comment Share on other sites More sharing options...
legierk 6 Posted December 14, 2023 Share Posted December 14, 2023 My apologies. I just found the setting on my Roku TV Emby app. Weird, seems like it wasn't there last time I checked. Anyhow, all good now. 1 Link to comment Share on other sites More sharing options...
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