this post was submitted on 04 Sep 2023
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Why is AC-3 bad? It's pretty much compatible with everything, holds Dolby Digital and atmos. Especially if the source is already encoded in AC-3, would it be wise to re-encode it?
if you already have AC-3 content you can leave it as is, however as a codec itself, it is worse then aac and opus in terms of fidelity:size
I agree that if it is already AAC, it should not be changed as it has the highest fidelity and best compression.
While AC-3 is not the best, it and AC-4 are the only formats i know that can encode TrueHD and Atmos metadata, so that should be kept it it is there.
Any transcode will lose fidelity unless the target codec is lossless, and I don't think AAC has a lossless mode.
yeah but OP is wondering about transcoding their stuff. there is no reason to encode to AC3. I would just use traditional surround if you plan kn transcoding it.