: Use the HandBrake Video Transcoder to convert the file to a standard MP4.
: Right-click the file and change the extension from .m4v to .mp4 . 459524.m4v
If a simple rename doesn't work or the file has specific features like AC3 audio or chapter markers that M4V handles better, use a transcoder. : Use the HandBrake Video Transcoder to convert
: Run the following FFmpeg command: ffmpeg -i 459524.m4v -c copy 459524.mp4 459524.m4v
If the file does not have DRM protection, you can often make it compatible with almost any device just by renaming it.
For developers or power users, you can create a script to instantly convert the file without losing quality.