# Plex Sync switched back to mp3 from opus?

**URL:** <https://forums.plex.tv/t/plex-sync-switched-back-to-mp3-from-opus/481121>\
**Category:** General Discussions\
**Tags:** android-mobile-legacy\
**Created:** [October 25, 2019, 12:54pm UTC](https://forums.plex.tv/t/plex-sync-switched-back-to-mp3-from-opus/481121 "2019-10-25T12:54:22Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![molnar\_tibor](https://avatars.discourse-cdn.com/v4/letter/m/74df32/32.png) [@molnar\_tibor](https://forums.plex.tv/u/molnar_tibor)\
**Post date:** [October 25, 2019, 12:54pm UTC](https://forums.plex.tv/t/plex-sync-switched-back-to-mp3-from-opus/481121/1 "2019-10-25T12:54:22Z")

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I have noticed that in the latest Plex App (7.23) playback info shows mp3 instead of opus. My server version is 1.18.1. Was there a switch in this regard and did Plex switch back to mp3 recently? Or is this some bug?  
Unfortunately I have no root access, therefore no way to verify the format of the actually synced files.

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**Author:** ![anon18523487](https://avatars.discourse-cdn.com/v4/letter/a/49beb7/32.png) [@anon18523487](https://forums.plex.tv/u/anon18523487)\
**Post date:** [October 25, 2019, 7:46pm UTC](https://forums.plex.tv/t/plex-sync-switched-back-to-mp3-from-opus/481121/2 "2019-10-25T19:46:02Z")

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It depends on the bitrate limits you chose when they were synced. Opus is only used if PMS had to transcode them. If transcoding was not needed, they will sync as-is.

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**Author:** ![molnar\_tibor](https://avatars.discourse-cdn.com/v4/letter/m/74df32/32.png) [@molnar\_tibor](https://forums.plex.tv/u/molnar_tibor)\
**Post date:** [October 25, 2019, 8:44pm UTC](https://forums.plex.tv/t/plex-sync-switched-back-to-mp3-from-opus/481121/3 "2019-10-25T20:44:25Z")

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source file is flac, so it was definitely transcoded.

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**Author:** ![system](https://global.discourse-cdn.com/plex/original/3X/2/a/2acb9765406f63293d357b4ec509ec39aa28f2ad.png) [@system](https://forums.plex.tv/u/system)\
**Post date:** [January 23, 2020, 8:44pm UTC](https://forums.plex.tv/t/plex-sync-switched-back-to-mp3-from-opus/481121/4 "2020-01-23T20:44:29Z")

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