Text Appearing in the Picture, and Dialogue Read by the Wrong Voice or with the Wrong Words: Both Fixed in the Storyboard

Quick answer: Two complaints, one place to fix them. Text in the picture — subtitles, signs, captions you never asked for — comes from a shot that mentions writing, a screen or a caption, or from a description with lettering; the video is generated as clean picture with dialogue carried by sound only, so remove the mention and regenerate. Wrong dialogue — the wrong character speaking, or words changed — comes from the line’s speaker tag and voice tag, or from a line the model paraphrased; fix the tag, put the exact words in the line, and regenerate that segment.

Still from “The Eagle's Vow”, an AI short drama generated end-to-end by SceneMixer (9 characters, 1 episode) — Sample: “The Eagle's Vow” — Realistic HD, 1 episode, produced end-to-end by SceneMixer from the script · watch the episodes

Select the segment, press Edit, and read the shot: the speaker tag, the bracketed delivery note, the line, and the voice tag at the end.

Text that appears in the picture

The site asks the video model for clean picture: dialogue is carried by sound, not subtitles. When lettering shows up anyway, something in the input invited it: a shot that says “a subtitle reads…” or “the sign says…”, a phone or a screen described with its content, a prop described with a label, or a character sheet with writing on the clothes. Delete the mention (describe a blank screen, an unlabelled bottle) and regenerate. On-screen captions are a separate site-wide feature that is not switched on at the moment; add readable text in a video editor after download.

A storyboard segment: location, time and weather fields, then numbered shots with durations, asset chips and spoken lines — A shot's spoken line is the text after the speaker tag; the voice tag at the end binds it to a character's voice.

Dialogue read by the wrong character

Every spoken line in a shot has a speaker tag in front and a voice tag at the end. The voice tag decides whose voice reads it; a line without one, or with the other character’s, is read by the wrong person. Press Edit on the segment, put the right character in both tags (the @ menu inserts them), save, regenerate. A character who speaks from outside the frame needs the off-screen note in the bracket, or the model will put them in the picture. Dialogue Lines, Voice-Over and Captions.

Words changed or a line skipped

The model reads the line as written and nothing else: if the words are wrong, the storyboard has the wrong words. Check the line in the segment, not in the script — the storyboard may have paraphrased. Put the exact sentence in, keep it short enough for the shot’s seconds (the editor does not check this, so give a spoken shot the time it takes to say), regenerate. A line that is missing from the video was missing from the shot text or had no speaker tag.

The voice itself is wrong

If the right character speaks with a voice that does not suit them, the fix is in Step 2: rematch or pick another voice on the character, then regenerate the segments. Changing the voice does not touch existing clips. How Character Voices Work.

Kanji, names and pronunciation

Names written in kanji or with unusual readings can be read wrongly by the voice. Write the name in the line the way it should be pronounced — kana or romanisation for Japanese, pinyin-friendly characters for Chinese — and keep the display name on the sheet as you like; only the line is read aloud. Language rules for dialogue: Dialogue Language and Cast Localization.

Symptom	Where it comes from	Fix
Subtitles or signs in the picture	A mention of writing, a screen or a caption in the shot or a description	Remove the mention; describe blank surfaces
Wrong character speaks	Voice tag or speaker tag on the line	Set both tags to the right character
Words changed	The line as written in the storyboard	Put the exact sentence in the line
Line missing	No line or no speaker tag in the shot	Add the line with its tags
Voice does not suit	The character's voice in Step 2	Rematch or pick another voice

FAQ

Can I add real subtitles later?

Yes, in any video editor after download. The site delivers clean picture on purpose.

The script has the right words but the video does not.

Check the segment's shot text; the storyboard may have shortened it. The video reads the storyboard.

Why did the off-screen character appear on screen?

The line lacked the off-screen note. Add it in the bracket before the line.

Do these fixes cost credits?

Editing is free; regenerating the segment costs its normal price.

Can two characters speak in one shot?

Yes, each line with its own tags, in order.

The clip has a word or a line I never wrote.

If it sits at the start or end, cut it with Trim; in the middle, remove that moment. To replace what is said, use Redub. Trim · Redub.

Fix the words, then regenerate

What the video says and shows is what the storyboard says; edit it there.

Open the editor

Updated October 2, 2026