Nerd mode
Nerd facts
Roundabout from above
A little machinery behind this video.
What loaded
Open a view to see what actually loaded.
Videos
The standard path is MP4 because it works almost everywhere. Some posts also have adaptive playback when you want the heavier route.
A poster keeps browsing light. Opening the video is the signal to spend more bytes.
HLS · MPEG-DASH
Why choices exist
One file does not fit every screen and connection. Browse stays light; inspect spends more when you ask.
