: Some users have reported significantly slower download speeds when requesting the 617 format compared to other high-definition streams like itag 399 [28].
: Typically a "video-only" stream, meaning it must be combined (muxed) with a separate audio stream (like itag 140 or 251) for full playback [28]. Usage and Issues 617 mp4
: Users of yt-dlp and similar tools may see this ID when listing available formats for a video [18]. : Some users have reported significantly slower download