What triggers the "Too long" flag in Dubbing Review, and how the one-click AI Shorten fixes it without touching other lines.
Updated 2026-07-23 · AutoCast v3.0 · macOS 14+
Who this is for
Anyone who sees a “Too long” flag on a dubbed line in Dubbing Review and wants to fix it quickly.
Why a line gets flagged
Each dubbed line is timed to match a specific click or zoom in your recording, not a fixed length you set (see Why dubbing follows your clicks). Translations are often longer than the original — a short phrase in one language can take noticeably longer to say in another. When a translated line would take longer to speak than the on-screen moment it’s anchored to allows, AutoCast flags it “Too long” so you know playback might feel rushed or run past the visual it’s tied to.
Steps
Open Dubbing Review and scan for lines with a “Too long” flag.
Click AI Shorten on the flagged line.
AutoCast regenerates just that line — rewriting the translated text to a shorter phrasing that fits the available time, then re-speaking it in your cloned voice.
Play back the line to confirm it now fits and still reads naturally.
Manually adjust if needed. If the shortened version loses a detail you want to keep, click into the line and edit the text directly — see Review and edit translations.
What you should see
The flagged line’s translated text gets shorter and its audio regenerates within seconds. The “Too long” flag clears once the new version fits. No other line in the video is touched.
Common issues or troubleshooting
Flag reappears after shortening — click AI Shorten again, or edit the line manually to trim it further; some phrases need a second pass.
Shortened line loses important meaning — AI Shorten only regenerates the flagged line, so it’s safe to follow up with a manual edit on that same line without affecting the rest of the dub.
Multiple lines flagged at once — you can run AI Shorten on each one individually; there’s no batch “shorten all,” and each click only regenerates the single line it’s attached to.