Codecs AV01008M08 399 Opus 251 New represents a cutting-edge advancement in audio compression technology. This codec is built on the Opus framework, leveraging its exceptional performance and flexibility. The "AV01008M08 399" designation refers to specific configuration parameters, such as the bit rate, sample rate, and frame size, which are optimized for a particular use case.
Example yt-dlp -F output snippet:
The string refers to a high-efficiency combination of video and audio streams commonly found in YouTube's "Stats for Nerds" . This specific pairing indicates the use of the AV1 video codec alongside the Opus audio codec, both of which are modern standards designed to provide high quality at lower bitrates . Video Stream: av01.0.08M.08 (399) codecs av01008m08 399 opus 251 new