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[Enhancement]: allow -c:a copy as advanced option? #1168

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opened 2026-04-24 23:34:44 +02:00 by adam · 5 comments
adam commented 2026-04-24 23:34:44 +02:00
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Originally created by @mayli on GitHub (Jun 4, 2023).

Describe the feature/enhancement

Most my audiobooks are encoded properly and I don't like to re-encode them, can we add an option to allow -c:a copy?

https://github.com/advplyr/audiobookshelf/blob/8243da69f69b2e4a65aa29acbee1898a89fbff62/server/managers/AbMergeManager.js#L70

Originally created by @mayli on GitHub (Jun 4, 2023). ### Describe the feature/enhancement Most my audiobooks are encoded properly and I don't like to re-encode them, can we add an option to allow `-c:a copy`? https://github.com/advplyr/audiobookshelf/blob/8243da69f69b2e4a65aa29acbee1898a89fbff62/server/managers/AbMergeManager.js#L70
adam added the enhancement label 2026-04-24 23:34:44 +02:00
adam closed this issue 2026-04-24 23:34:45 +02:00
adam commented 2026-04-24 23:34:46 +02:00
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@advplyr commented on GitHub (Jun 4, 2023):

You could use copy here
image

Although I'm not sure how ffmpeg will behave if the bitrate and channels are different. I have tested this using copy.

I'm not sure how common mp3 codec is in m4b files

@advplyr commented on GitHub (Jun 4, 2023): You could use copy here ![image](https://github.com/advplyr/audiobookshelf/assets/67830747/d9534ece-0bb9-4d50-92eb-40da179e28d8) Although I'm not sure how ffmpeg will behave if the bitrate and channels are different. I have tested this using copy. I'm not sure how common mp3 codec is in m4b files
adam commented 2026-04-24 23:34:47 +02:00
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@mayli commented on GitHub (Jun 5, 2023):

Maybe we could have some UI improvement with a copy checkbox and disable other options.

@mayli commented on GitHub (Jun 5, 2023): Maybe we could have some UI improvement with a copy checkbox and disable other options.
adam commented 2026-04-24 23:34:47 +02:00
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@advplyr commented on GitHub (May 3, 2024):

I'm merging this with https://github.com/advplyr/audiobookshelf/issues/1257

@advplyr commented on GitHub (May 3, 2024): I'm merging this with https://github.com/advplyr/audiobookshelf/issues/1257
adam commented 2026-04-24 23:34:48 +02:00
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@advplyr commented on GitHub (May 3, 2024):

Duplicate of https://github.com/advplyr/audiobookshelf/issues/1257

@advplyr commented on GitHub (May 3, 2024): Duplicate of https://github.com/advplyr/audiobookshelf/issues/1257
adam commented 2026-04-24 23:34:48 +02:00
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@devnoname120 commented on GitHub (Sep 16, 2024):

I was wondering why converting my AAC files to a M4B audiobook with audiobookshelf would destroy the quality. A combination of reading the source code,git blame, and some clicking around led me to this issue. I agree that it would be nice if discoverability of this feature was improved.

@devnoname120 commented on GitHub (Sep 16, 2024): I was wondering why converting my AAC files to a M4B audiobook with audiobookshelf would destroy the quality. A combination of reading the source code,`git blame`, and some clicking around led me to this issue. I agree that it would be nice if discoverability of this feature was improved.
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Reference: starred/audiobookshelf#1168
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