: Represents the Level Identifier (Level 4.1) with a "Main" tier string. Level 4.1 supports resolutions up to 1080p (Full HD) at 60 frames per second, or 4K at lower framerates.
No codec string contains spaces, but users often paste space-separated logs. The actual playing system probably sees: av01.0.08M.08:399:opus:251 . codecs av01008m08 399 opus 251 new
: This is the audio codec . Opus is a royalty-free , open , and highly versatile audio compression format standardized by the IETF (Internet Engineering Task Force). It is celebrated for its low latency (as low as 5ms), which is ideal for real-time applications like video conferencing, and its ability to scale across a wide range of bitrates. Opus dynamically switches between a Linear Predictive Coding (LPC)-based mode for speech and a transform-based mode for music, ensuring optimal quality for any audio. : Represents the Level Identifier (Level 4