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April 5, 2024
6 min read
SSDown Tech Team

MP4 vs WebM: The Ultimate Battle of Video Formats (And Which One You Should Download)

#tech#formats#mp4#webm#comparison#guide

The "Invalid File Format" Nightmare

You downloaded a 4K video, sent it to a friend, and they say: "It won't play." The culprit is the Video Format. The two giants are MP4 and WebM.


1. MP4 (H.264) - The King of Compatibility

If video formats were cars, MP4 is a Toyota. It works everywhere.

  • Pros: Universal compatibility (iPhone, Android, TV, Windows). Edit-friendly.
  • Cons: Slightly larger file size.

Who should pick MP4? iPhone users (iOS hates non-standards), video editors, and regular users who just want it to work.


2. WebM (VP9/AV1) - The Google Challenger

WebM is designed for the web by Google. YouTube uses it for 4K/8K.

  • Pros: 30-50% smaller size for same quality.
  • Cons: The Apple Problem. Older iPhones and Macs cannot play WebM natively. You get a black screen.

Who should pick WebM? Android users, data savers, and archivists wanting raw 4K YouTube streams.


The Container vs. Codec Myth

".mp4" is just a box (Container). What matters feels is the Codec (H.264 vs VP9) inside.

  • SSDown's Default: We prioritize MP4 for compatibility. But if the source is 4K WebM only, we provide that to preserve quality.

Conclusion

  • Click MP4: If you share on Instagram or use an iPhone.
  • Click WebM: If you are on Android or want the absolute smallest file size.