Technical communities on GitHub Gists maintain exhaustive lists of these IDs to track how YouTube and other platforms update their compression and delivery methods. 4. Comparison to Other Formats
These format IDs are most commonly encountered by users working with command-line video downloaders or streaming analyzers:
Often associated with Apple Native HLS (m3u8) delivery, though it represents the same quality as standard HTTPS streaming. 628 mp4
Users can specifically request this format using command flags (e.g., -f 628 ) to target the 4K 60fps VP9 stream.
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 ( Users can specifically request this format using command
Large data footprint; a 628 mp4 stream can be approximately 8.27 GiB for high-bitrate content, with bitrates averaging around 35,007k . 2. Azure Stream Usage
Significantly smaller than the 4K variant, estimated at roughly 311.58 MiB for typical session lengths. 3. Usage and Tools Video Codec: VP9 ( Large data footprint; a
While MP4 is a universal container, it often relies on lossy compression. In the context of YouTube's itags, is a "video-only" DASH (Dynamic Adaptive Streaming over HTTP) format, meaning it must be combined with a separate audio stream itag (like 140 for AAC audio) to create a complete file. Get-EventSession.ps1 - GitHub