Video

Video elements play a video file inline on the slide. Click Video in the top toolbar to insert.

Adding a video

Two sources, both via the inspector:

Upload — click "Upload" or drop a file. Accepted: MP4, WebM. Files store in your org's bucket; a signed URL goes into src.
Paste URL — any HTTPS-served video URL works (CDN, Vimeo direct file, etc.). YouTube/Vimeo embed URLs need to use the Embed element instead — those aren't direct video files.

Inspector

Name	Type	Description
src*	string (URL)	Video file URL (MP4 or WebM).
autoplay	boolean	Start playing as soon as the slide is visible. Required to be paired with `muted: true` for browser autoplay policies on iOS/Safari. Default: false.
loop	boolean	Loop the video continuously. Default: false.
muted	boolean	Start muted. Browsers block autoplay with sound — set this to true if autoplay is on. Default: false.
posterUrl	string (URL)	Image shown before the video starts. Schema-only today — no inspector field yet; set via JSON / import.

Autoplay rules

Browsers block videos that try to autoplay with sound. To get reliable autoplay on a slide:

json

{
  "type": "video",
  "src": "https://...",
  "autoplay": true,
  "muted": true,
  "loop": true
}

autoplay: true + muted: true is the only combination that survives every modern browser. If you set autoplay: true and leave muted: false, the video will load but the visitor has to manually press play.

Common patterns

Codec recommendations

For broad compatibility, encode as:

H.264 MP4 — works everywhere
VP9 WebM — better compression for the same quality if your audience is on modern browsers (Chrome, Firefox, Edge)

Avoid HEVC / H.265 for inline web playback — Safari supports it but Chrome/Firefox don't.

Schema reference

Video element:

Name	Type	Description
type*	"video"	Discriminator
src*	string	Video URL
autoplay	boolean	Default: false
loop	boolean	Default: false
muted	boolean	Default: false
posterUrl	string	Image shown pre-play. JSON-only today.