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Transcode TRUEHD 7.1 Atmos to EAC-3 7.1 or AC3 7.1 Atmos (FFMPEG) #891

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LimesKey opened this issue Oct 18, 2023 · 1 comment
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Transcode TRUEHD 7.1 Atmos to EAC-3 7.1 or AC3 7.1 Atmos (FFMPEG) #891

LimesKey opened this issue Oct 18, 2023 · 1 comment

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@LimesKey
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Is your feature request related to a problem? Please describe.
This probably has already been talked about and discussed a while ago and this is not exactly related to Tdarr, but I wanted to know if there were any new developments to the EAC-3 encoder. None of my streaming devices support TrueHD audio and I would like to play video files that only have TrueHD 7.1 Atmos audio, and still have that great quality and 7.1 atmos surround.

Describe the solution you'd like
This is actually more a FFMPEG or Handbreak feature request, but I would like to make sure that nothing like this already exists within Tdarr's supported encoding programs. Currently with FFMPEG I get [eac3 @ 0x563491453b80] Specified channel layout '7.1' is not supported or something similar to that when I attempt to transcode TrueHD 7.1 (or higher) to EAC-3 7.1. Does Handbreak work instead? If so, how would I get it setup / what custom arguments do I need?

Additional context
I apologize that this may not directly relate to Tdarr and I also apologize if this has been discussed many times before (I tried googling).

@supersnellehenk
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Ffmpeg doesn't have support for 7.1 (E)AC3. Nor can it maintain Atmos data when creating a new track, as the Dolby Atmos encoder is proprietary.

As far as I'm aware no program supports the 7.1 layout for those codecs. Hope that helps.

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