Convert y4m to av1

Download and install the latest version of Filestar.
Right click on one or more Y4m 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 .y4m and .av1?

Name: YUV4MPEG2 Video; AOMedia Video 1
Extension: .y4m; .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-yuv4mpeg; video/av01
Sample: sample.y4m; sample.av1
Wikipedia: .av1 on Wikipedia

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Last updated October 3, 2026