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jmshrv / finamp

A Jellyfin music client for mobile
Mozilla Public License 2.0
1.91k stars 125 forks source link

M4A tracks are noticeably quieter when played without transcoding #811

Open deinestroza opened 3 months ago

deinestroza commented 3 months ago

On iOS, when M4A tracks are downloaded in their original format, they are quieter than if they were downloaded in AAC format. M4A tracks are also quieter when the transcoding option altogether is turned off. It doesn't happen to other formats like FLAC. This happens regardless if volume normalization is turned on or off. I tested it on Android 11 (Finamp Beta 0.9.8) to see if it was also an issue there and the original format M4A tracks played at the same volume as their transcoded AAC format counterparts regardless of the settings mentioned before.

iPhone 14 iOS 17.5.1 Finamp Beta 0.9.8

Chaphasilor commented 2 months ago

Hmm, interesting. It could be some platform specific issue, since M4A is a codec from Apple. But I don't think there's anything we can do about it, since we're simply using a built-in audio player on each platform...