How To Improve Nexus 4 Camera Video Recording And Audio Quality

Requirements

• Rooted Nexus 4
• A root level file explorer (like Root Explorer or ES File Explorer)
• Text Editor
• System mounted as RW (most file explorers will let you do that)

Procedure
Step 1: Mount your Nexus 4 file system as RW using the file explorer of your choice.
Step 2: Browse to /system/etc folder on your device, and locate the file named media_profiles.xml. Load the file in any text editor.
Step 3: Scroll down the XML to locate the following lines of code under :

Step 4: Change bitRate under Video codec to 20000000, and under Audio codec to 288000 respectively.
Step 5: Save your changes and reboot the device.