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Sessions Preferences
Pro
Sessions is an Orbit Pro feature. Without Pro the pane shows "Sessions require Orbit Pro" and its controls are disabled.
A handful of settings governing how Orbit's session bundles are auto-saved and how the temporary "untitled" bundles created by preview-mode work are managed on disk. For the feature itself — what's in a session, how to create one, what's persisted — see Sessions.
Auto-Save
Automatically save changes — when on, Orbit saves the open session 2.5 seconds after any edit. Default is off: save manually with ⌘S, or turn this on to opt in.
The auto-save covers everything that lives in the session: video edit list, markers, loop regions, channel routing, solo and mute state, monitoring settings, and the playlist. It does not cover audio source files (those are referenced, not copied into the bundle), nor preferences (those live in AppSettings, not the session).
Untitled sessions — the ones Orbit creates implicitly when you load a file in preview mode and start tweaking — auto-save regardless of this toggle. That's deliberate: their entire reason to exist is crash recovery, so disabling auto-save for them would defeat the point. The toggle only governs explicitly-named sessions.
TIP
Auto-save ships off so Orbit doesn't write to disk behind your back. If you'd rather not rely on ⌘S, turn it on — the 2.5-second debounce means it doesn't interrupt your work, and it protects against losing edits if Orbit (or macOS) drops out unexpectedly.
Temporary Sessions
Untitled sessions live in Orbit's temporary directory. They accumulate over time — every preview-mode load that lasts more than a few seconds leaves one behind, and Orbit doesn't delete them automatically because that's the wrong call when you might want to recover one after a crash.
Clear All — deletes every untitled temporary bundle from disk. A confirmation alert is shown first, since this is irreversible; if the current session is untitled and unsaved, it is closed too. Disabled when there are no temporary bundles to clear.
A small counter next to the button shows the current count ("3 temporary sessions on disk", or "No temporary sessions"), refreshed when the panel opens and after a clear. Useful for spotting when the count has crept high enough to be worth a clean-up — typically when you've been working on a lot of one-off files.