Significantly smaller than the 4K variant, estimated at roughly 311.58 MiB for typical session lengths. 3. Usage and Tools
On YouTube, is an itag identifier for a specific video-only stream variant. This format is optimized for high-end viewing experiences: Resolution: Frame Rate: 60 frames per second (fps). Video Codec: VP9 ( 628 mp4
These format IDs are most commonly encountered by users working with command-line video downloaders or streaming analyzers: Significantly smaller than the 4K variant, estimated at
Often associated with Apple Native HLS (m3u8) delivery, though it represents the same quality as standard HTTPS streaming. This format is optimized for high-end viewing experiences:
Users can specifically request this format using command flags (e.g., -f 628 ) to target the 4K 60fps VP9 stream.
Outside of YouTube, the number "628" appears in Azure streaming configurations as a different quality tier: 384x216384 x 216 (Low resolution). Frame Rate: 30 fps. Bitrate: ~628k video-only stream.