For example, you could have a device that can only play MP4 videos, and not MKV. To be able to watch your MKV file, you have to know how to convert MKV to MP4 file format.

Converting MOV files to MP4 Converting to an MP4 file can drastically reduce file size without changing the audio or video quality in any way that is detectable to your audience.

To access any given file, you may need to convert it to a new format. For example, something your colleague created on a macOS word processor might not work on your Windows 10 computer.

If you want to convert MP4 to HEVC / H.265 on your Windows PC, use these free MP4 to HEVC converter software and online tools.

Step 3 – Convert an MP4 file to AVI Click the Add File (s) button in the lower left corner of the screen and locate the MP4 file that you wish to convert.