I understand Android doesn't allow internal audio to be recorded. but on LG and Samsung it seems possible as Mobizen app can do. from developing side, what's the method used to capture internal sound?
I found similar question but it was for older version of android and about screen recording. but right now. there are a lot of screen recorders. only mobizen can record internal audio on samsung using some sort of wizard before recording start it shows a popup and says OK then recording starts with audio
Scroll down to the Audio settings and choose to record Internal audio (Android 10+). Go to settings and choose internal audio. ADV comes with a floating button that allows you to stop and start recordings without entering your notification shade. It can be deactivated if you don't want to have it in your screencasts.
Go to Audio source and select Internal audio. You can use a third-party screen recorder app from the Google Play Store if your phone doesn't have one built-in. Using the AZ Screen Recorder as an example, go to the app settings, enable Record audio, tap on Audio source, and select Internal audio.
1. Use Mobizen Screen Recorder with Internal Audio App to Record the internal audio on Android. Recently, RSUPPORT company developed the Mobizen Screen Recorder app that is equipped with all the essential screen recording tools.
It seems like Android ROMs on LG and Samsung have an undocumented API for recording audio output.
Since most LG and Samsung devices sport modified versions of the Android framework, it's possible that the API has been exposed for use but not documented anywhere.
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