Demo Desk

stage layout for demos and b-roll

1920 x 1080

Stage The demo area stays blank so the whole screen is seen. Keys 1 to 4 switch output, C toggles the commentary window, G toggles the guides, F drops everything except the frame so a capture records only the composition. Esc comes back.

Status

Blank space for your commentary clip.

Frame Shown at

Status line

Text starts off the right edge, travels left across the strip, waits at the far side, then runs again. Updates, questions, announcements.

Speed 1x

Pause at the far side 3s

Side panel text

Type straight into the frame on the right. These set how big that text is.

100%

Demo page

Share a screen or load a URL. Either one fills the demo slot at full frame width.

Screen sharing needs the page served over https, so it works on demo-desk.pages.dev and not from a file on disk. A site that refuses to be framed stays blank, so record that one in its own tab.

Commentary

Optional. Switching it off hands the whole right column to the side panel.

Record

Set the frame up first: side panel text, commentary, and the demo. Then press Record. The desk drops to frame only and your browser asks what to capture, so choose This tab.

idle

Stop with your browser's own stop sharing bar. The file lands in Downloads as webm, which YouTube accepts as it is. For a true 1920 by 1080 file, put the browser window fullscreen on a 1080p display before you start.

Regions

Four slots at this output size. Pick a row to read it in plain words.

Eli8

Run of show

Tick as you go. Saved in this browser only.

Dimension data

Every number you need to set this up in OBS, a phone, or an editor. Region values are x, y, width, height in the frame's own pixels, with the origin at the top left.

Region	Frame	Region in frame px	Note

Output	Frame px	Aspect	App UI top	App UI bottom	Side panel	Commentary

App UI is where the platform draws its own furniture over your video: username, caption, buttons. Keep words and faces out of it unless you have checked the current app, because these insets change without notice.