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“vp9”
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Technical Deep Dives··8 min readEncode Once, Compare Three Video Formats on Your Own Footage
Every codec guide quotes an efficiency number averaged over a test set that is not your video. Motion, detail, cuts and flat areas all move the result. Encoding the same clip three ways settles it, provided you read the ratios rather than the raw sizes and compare the pictures rather than only the numbers.
Technical Deep Dives··8 min readMP4 or WebM: Converting Video in the Browser
Three targets, and each exists for a reason. Why conversion is re-encoding rather than repackaging, why you should never chain one conversion into another, and why a converter that carries its own encoder offers everyone the same menu.