Add .nomedia file in your folder.It will stop your Media scanner to scan your recorded files.
Create .nomedia files by Notepad :
Open notepad. ► After opening notepad file, don't write anything in that file. Just leave it totally blank, not even any space or symbol. ► Than in notepad Menu-bar, go to "Save As" option. ► In Save as Dialog Box, select "All files (.)". ► In File name box, type .nomedia and click on Save..nomedia file is ready.