Click Add Files to add the video or videos that you want to convert to M4A or any other format. With Program4Pc Video Converter you can convert your whole media (video) library by defining the parameters manually or automatically.
Step 3: Choose M4A as the Output Format and Adjust Settings
Select your required output format, then click on Preset drop-down menu to expand the M4A preset list and choose one of the M4A presets. If you want to convert your video to M4A for playback on a mobile devices, click Devices tab for presets to select your device's manufacturer and model from the list.
Step 4: Set the Output Folder and Start the Conversion
Click the Browse button next to the Output Folder field to specify where the software should place your converted files. Finally, click Convert Now.
It is very easy, now you know how to convert any file to M4A and back again in just couple of clicks without quality lose.