Quick definition
MP4 is a widely supported video container used for phones, websites, social media, and streaming.
Best use cases
Sharing video across devices, social platforms, websites, and editing tools.
What to watch out for
Video files can become large, and audio-only use cases should be converted to MP3.
Related converters
Conversion tip
Keep the original file, create a converted copy, then compare file size, quality, and compatibility before deleting or uploading the result.