How to Fix Pronunciation in HeyGen Videos

Fix HeyGen pronunciation with a word-level Pronunciation correction in AI Studio for one occurrence, or a Brand Glossary rule when you need a reusable choice. The word-level correction does not update every instance of the word. Tools like fenbs keep the tested spelling and the reviewer’s accepted result, so the next person or AI does not start the same pronunciation experiment again.

How do you correct one mispronounced word?

Use the word-level correction when the problem is one occurrence in a scene. HeyGen’s AI Studio script guide↗ (opens in a new tab) documents the Pronunciation control and makes its limited scope explicit. Treat the following as a small test before you decide whether a reusable rule is needed:

1. Open the script containing the word you need to correct in AI Studio.
2. Use the word-level Pronunciation correction for the occurrence that needs changing.
3. Review the correction for that word. Keep the original term and the accepted result distinct in your review notes.
4. Listen to the corrected word in its sentence. Ask the person who knows the intended pronunciation to judge the result.
5. Check other occurrences separately, or create a Brand Glossary rule if the same choice needs to be reused.

Do not change several unrelated terms at once. If the sentence improves, you want to know which spelling caused the improvement. Keep a short record of the original word, the attempted sound and whether it passed review. That is more useful than keeping only the last text you entered.

When should you use a reusable glossary?

A recurring company name, product name or technical term is a better candidate for Brand Glossary than a series of isolated corrections. HeyGen’s Brand Glossary guide↗ (opens in a new tab) covers creating pronunciation rules manually or from a CSV file. Start with the few terms that actually need help, rather than turning every ordinary word into an exception.

1. Open Brand and select Brand Glossary.
2. Choose Create Brand Glossary.
3. Choose Add manually for a small list, or Upload a CSV file if you already have a list of approved terms.
4. Prepare the original terms and their intended pronunciations. Keep untested suggestions separate from spellings someone has accepted.
5. Choose that glossary for the video you are making, and check the spoken result before approving it.

The glossary is reusable, but it is not automatically active for every new video or translation. Include selecting it in your own production checklist. The vendor’s guides describe different positions for Studio’s Brand control, so use the Brand menu without assuming that every editor places it in the same corner.

How do you test a brand or technical term?

Build a small test script around the term’s real use. A name spoken on its own may be easy to recognize, while the same name between two longer phrases can be less clear. Your test should include the surrounding words that the audience will hear, along with any nearby abbreviation that might cause confusion.

• Write the normal spelling and a short explanation of the intended sound for the reviewer.
• Test one proposed phonetic spelling at a time and listen to the full sentence.
• Ask the reviewer to mark it accepted, rejected or still uncertain, instead of assuming silence means approval.
• Repeat the check wherever the term appears in the finished script.
• Listen again after changing the surrounding wording, so your final review matches the words you will deliver.

For a hypothetical training video, the accepted pronunciation of a product name might matter more than a perfectly even reading of a transition sentence. Agree on that priority before you make repeated edits. The broader slide narration workflow covers preparing the spoken material; this check is specifically about the sound of selected terms in HeyGen.

Why can the same word still sound wrong later?

First establish whether you corrected one occurrence or created a glossary rule. A word-level change applies to that instance in that scene. Finding the same mistake elsewhere does not show that the first correction failed; it may simply be another occurrence that was never changed.

Next check whether the intended glossary was selected for the current video. Saving a rule and selecting it for the work are separate actions. Check the actual term against your accepted list, too: a review note that names the term and the tested spelling is easier to use than a general instruction to “fix the brand names.”

Avoid promising perfect pronunciation from any saved rule. Listen to the delivery that matters and let the reviewer accept that result. When a tested spelling fails in a later video, save what changed and the new accepted result as a lesson in fenbs, so the next attempt begins with the evidence you already have.

Are pronunciation and translation rules interchangeable?

No. Pronunciation concerns how the term sounds. A translation rule concerns which wording is used in another language. Brand Glossary includes Force Translate and Don’t Translate rules for translation, alongside pronunciation rules. Decide whether the problem is the sound, the translated wording or both before you change the glossary.

For a translation job, select the glossary through Translate > Advanced. That is a separate workflow from correcting a word in an AI Studio script. Follow the HeyGen video translation guide for that job, and keep a language reviewer’s approval separate from the approval of a visual brand kit.

What should you save before the next script?

Save the original term, the accepted phonetic spelling, the sentence you checked, the chosen glossary and the reviewer’s result. Include an example of a rejected attempt if it prevents someone repeating the same mistake. Avoid a long list of sound experiments without a clear accepted choice at the top.

Keep this record beside the script’s remaining changes. Our guide to revising HeyGen scripts handles narration and scenes, while AI script-writing tools covers choosing help for drafting. Find more work guides in AI at work.

How to keep tested pronunciations with fenbs

1. Create a free account.
2. Save the difficult terms and the spellings that sounded right. Include the sentences you tested.
3. Write down who accepted the result and which glossary to choose next time. Mark anything still waiting for a check.
4. Save where you stopped, so you never lose the work. The next AI you connect can carry on from exactly where you left off, on any device and in any other AI.

fenbs keeps the accepted choices and the work still to do; it does not change HeyGen’s speech or apply a glossary. If a one-time word correction is all you need, finish it in HeyGen. Keep the shared record when the same terms, people or AI assistants will return for another video.