無料オンラインAV1からM4Aへのコンバーター

AV1 is a new open codec developed by Alliance for Open Media consisting of companies that produces electronics and develops web browsers. The codec is aimed to send high-quality videos via the internet quickly and without losing the quality even when bandwidth is low. AV1 is more efficacious then today's most popular video formats because it uses future compression technology.

This is a lossless-format (and encoding algorithm) for Apple platforms. M4A is widely used in iPod players and as a component in QuickTime media-players. The m4a codecs decoder is found in open sources - this allows third party users to open files in that format.