Content generated by an LLM with human direction.

Videos

The rule

A video element puts a movie on a slide. There are two kinds:

• A local file — pick a video file (mp4 / webm / mov / …) or drag it onto the canvas. The bytes are embedded in the deck, exactly like an image, so the deck stays self-contained. (Videos are big: Eigendeck warns before embedding anything over 250 MB.) The file is also watched — re-export or replace it on disk and the slide reloads it.
• An embed by URL — paste a YouTube, Vimeo, or PeerTube link. Nothing is downloaded into the deck; the provider's player is embedded and the video streams at play time (so embeds need a network connection when you present).

Add either with the "+ Video" button (it asks for a file or a URL) or by dragging a video file in.

Playback options

In the Inspector (select the video):

• Loop — play forever.
• Ping-pong — files only: play forward, then backward, repeat. This is best-effort — video has no true reverse playback, so it's smooth only for short clips (it reverse-seeks frame by frame).
• Speed — 0.25×–2×. For files this is exact; for embeds it's applied through each provider's player API, so treat it as best-effort.
• Autoplay — start when the slide appears in present mode. Browsers only allow autoplay when muted, so autoplay forces mute.
• Show controls — show the player's controls bar. On by default, so a newly added video is immediately playable. Turn it off for a chrome-free look: a file video can still be started by clicking it (play/pause); for embeds (YouTube/Vimeo/PeerTube) controls are kept whenever autoplay is off anyway — otherwise there'd be no way to start the video (PeerTube hides its play button when controls are suppressed), so pair "controls off" with Autoplay for a truly chrome-free embed.
• Muted — start with sound off.
• Captions — files: attach a WebVTT (.vtt) subtitle file (browsers can't read subtitles baked into the video container, so captions come from this sidecar). Embeds: turns on the provider's captions, best-effort.

Toggles default off except Show controls (on), and speed defaults to 1×.

Thumbnails and export

The slide-sidebar thumbnail shows a poster frame of a file video (captured automatically) or the provider thumbnail of an embed. Static/PDF export uses that same cached image — so a file video exports as its poster frame with no slide flip-through. Embeds can't be screenshotted offline (cross-origin), so in an offline export they fall back to a placeholder box.

Why

Local files are embedded (not linked) so a deck you hand to someone else just works — same reasoning as images. Embeds are the opposite trade: tiny deck, but they depend on the network and the provider. Pick by how you'll present.

Reverse playback and embed speed are "best-effort" on purpose: the browser doesn't give us a clean way to do either, so rather than hide the options we expose them and tell you the limits here.