Example yt-dlp -F output snippet:
: Higher visual quality than the older H.264 (AVC) version. Audio Codec: Opus 251 codecs av01008m08 399 opus 251 new
is widely considered the best standard audio quality available on YouTube. Format ID 251 Example yt-dlp -F output snippet: : Higher visual
This pairing is in YouTube’s DASH (Dynamic Adaptive Streaming over HTTP) manifests. video: contentType: 'video/mp4
The trailing new is simply a note – maybe “new version” or “new download.”
const videoConfig = type: 'file', video: contentType: 'video/mp4; codecs="av01008m08"', width: 1920, height: 1080, bitrate: 2000000, framerate: 30 , audio: contentType: 'audio/webm; codecs="opus"'