This guide is prepared by the BestAI Editorial Team. It explains recommended workflows, not guaranteed performance. Always review automated output before publishing.
Remove writing patterns that do not sound spoken
Long nested sentences, repeated headings, URL-like text and large blocks of numbers can produce unnatural rhythm. Rewrite the script in a conversational form while keeping the meaning accurate.
Use contractions or natural spoken forms only when they fit the language and audience. Do not add random filler words simply to imitate a person.
Create breath groups
A breath group is a short unit that can be spoken comfortably. Split a long line at a natural meaning boundary, such as after a condition, comparison or completed action. This gives the engine clearer timing cues.
Humanizer settings can automate part of this work, but manual review remains important for names, quotations and emotional scenes.
Test the voice with representative text
Do not choose a voice using one simple sentence. Test a paragraph containing the same language mix, punctuation, names and emotional range as the final script. A voice that sounds good for a greeting may perform differently in a long review or story.
Keep a short reference paragraph for future projects. It makes comparing voices and settings faster.
Use speed carefully
Very fast narration can hide pauses but makes articulation worse. Very slow narration exposes every synthetic transition. Start near normal speed, then move in small steps until the pace matches the content.
Educational and emotional material usually benefits from more space. Short promotional lines can use a quicker pace when clarity remains intact.
Add pauses with purpose
A pause should separate ideas, create anticipation or allow a key line to land. It should not appear after every comma. Use stronger pauses only at important turns in the narration.
When a script already has good punctuation, a light Humanizer may be better than a cinematic preset.
Finish with audio mastering
After generation, normalise level, control peaks and remove unnecessary low-frequency rumble if present. Avoid excessive compression because it can make breaths, sibilance and synthetic artefacts more obvious.
Mix the narration against the final music rather than judging it alone. The correct voice level is the level that remains clear in the completed video.
Frequently asked questions
Does a lower speed always sound more natural?
No. The correct speed depends on the voice and script. Make small adjustments and listen.
Should I use the strongest Humanizer setting?
Not always. Use Light or Balanced for normal narration and stronger pauses only when the story needs them.
Why do names sound wrong?
Pronunciation may depend on spelling, language selection and the selected voice. Test phonetic alternatives without changing the intended meaning.