Convert h266 to av1

Download and install the latest version of Filestar.
Right click on one or more H266 file(s) on your desktop and select Convert with Filestar.
Type convert to av1 in the search box.
Press Convert.

What is the difference between .h266 and .av1?

Name: H.266 VVC Video Stream; AOMedia Video 1
Extension: .h266; .av1
Format: Binary; Binary
Category: Video; Video
Developer: Alliance for Open Media
Description: An open, royalty-free video coding format designed for video transmissions over the Internet.
MIME Type: video/x-h266; video/av01
Sample: sample.h266; sample.av1
Wikipedia: .av1 on Wikipedia

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Last updated October 3, 2026