MP4 vs WebM
Comparing MPEG-4 Part 14 and WebM Video — which format should you use?
| MP4 | WebM | |
|---|---|---|
| Full Name | MPEG-4 Part 14 | WebM Video |
| Extension | .mp4 | .webm |
| MIME Type | video/mp4 | video/webm |
| Category | video | video |
MP4 Pros
- +Universal playback support
- +Efficient H.264/H.265 compression
- +Supports subtitles and multiple audio tracks
- +Standard for web and mobile video
MP4 Cons
- -H.265 has patent licensing issues
- -Editing requires re-encoding
- -Not ideal for lossless archival
- -Large files for high-quality long content
WebM Pros
- +Royalty-free and open source
- +Excellent compression for web
- +Native browser support (Chrome, Firefox, Edge)
- +AV1 codec option for best compression
WebM Cons
- -No Safari support (use MP4 fallback)
- -Limited editing software support
- -Less universal than MP4
- -Hardware decoding varies
Use MP4 when...
- -Web video (YouTube, social media)
- -Mobile video recording
- -Streaming services
- -Video downloads and distribution
Use WebM when...
- -Web video streaming
- -HTML5 video elements
- -YouTube (internal format)
- -WebRTC video calls