1. pyf

    The first videos to receive YouTube's AV1 transcodes

    The AOMedia Video Codec 1.0 (a.k.a. AV1) is an open, royalty-free codec optimized for UHD video and intended to compete with MPEG's HEVC. Quoting the YouTube Developers' channel, "support for AV1 in MP4 within Media Source is available in Chrome 70, and Firefox 63 builds newer than September 13...