Android Question Videorecord with audio library

Hello,

I use the audio library for videorecord but i want to handle this 2 buttons (see screenshot)

1. How can i do this ?

2. I have a strange issue, when i'm in debug mode the file mp4 is save... when i'm release mode click "Enregistrer" (save mp4) will restart my App without error msg and without save mp4

ty