: It offers high compression rates while maintaining good image quality, making it ideal for streaming and sharing online.

: It is frequently a typo where a user intends to search for the standard MP4 (MPEG-4 Part 14) multimedia container format. Overview of MP4 Technology Since the query prominently includes "mp4,"

: While true MP4 files are non-executable media files, malicious actors can sometimes use steganography to hide malware in unused parts of the file or exploit vulnerabilities in outdated media player codecs. Troubleshooting "398mp4" If you encountered this as a file or link: MP4 files explained: How to open and use - Adobe