Remove audio stream by language transcodes audio stream to vorbis

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Description

I was using the "remove audio stream by language" plugin set to remove Russian and Ukrainian (ru,uk). Removal worked, but it transcoded the remaining English stream from DTS-HS MA 2.0 to Vorbis 2.0.

Steps to Reproduce

Load file with audio streams in language(s) to be removed
Use plugin "remove audio streams by language" with setting for languages to remove
Run workers with file and plugins

Expected behavior: [What you expect to happen] Designated language streams are removed and remaining language streams are untouched

Actual behaviour: [What actually happens] Remains audio stream was transcoded from DTS-DH MA 2.0 to Vorbis 2.0

Reproduces how often: [What percentage of the time does it reproduce?] at least a dozen files with Russian and English streams were processed and all files removed Russian stream but transcoded English stream.

Versions

Version: [0.2.4~7339f8b] in docker container on Ubuntu 23.04 server

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Installation Method Used

Docker

Additional Information

Am going to try the remove audio/subtitle by language as soon as I can restore the affected files. Will report back.

EDIT: The "Remove audio/subtitle by language" appears to function properly as long as I use three letter language codes. It does nothing if I use the two letter codes.

Any additional information, configuration or data that might be necessary to reproduce the issue.

Unmanic / unmanic