The best subtitles, proofread by our AI Reviewer.

Plenty of tools transcribe. Hello8 transcribes, translates, then proofreads every subtitle to fix the mistakes before your audience sees them.

Choose your video

Free to start, no credit card required. All you need is an account.

AI ReviewerReviewing
  • Your glossary 00:00:42Chef Removed: Delorm Fixed: Delorme tastes the sauce.
  • Hesitation 00:02:08Removed: So, uh, we Fixed: We add the salt.
  • Rewrite 00:05:17Removed: What you want to do is Fixed: Salt it at the end.
See the other rules
  • Spoken slip 00:06:30Removed: There’s Fixed: There are three reasons for that.
  • Your number rule 00:08:12Let it rest for Removed: twenty-five Fixed: 25 minutes.
  • Typography 00:09:45He shouted Removed: "Dinner's ready!" Fixed: “Dinner’s ready!” from the kitchen.
Everything the AI Reviewer checks

Example. Corrections depend on your video and your settings.

They subtitle with Hello8

  • MĂ©morial de la Shoah
  • HPE
  • Pomelo Factory
  • Charlot Paris

Automatic subtitling: transcribe, translate, review, collaborate and export

  1. 01

    Transcribe

    Video or audio. Speakers identified, subtitles timed.

    How it works
  2. 02

    Translate

    Subtitle translation into more than 90 languages, with your glossary.

    See the languages
  3. AI Reviewer

    It reads every subtitle and fixes the mistakes. Each correction is checked.

    Subtitle proofreading
  4. 04

    Collaborate

    Share a video or a project. Your team comments and edits, depending on their role.

    All features
  5. 05

    Export

    SRT, VTT, ASS, or video with burned-in subtitles, depending on your plan.

    See the plans

Free quality check for a subtitle file

Video subtitling for creators, teams and institutions

Your files stay yours.

Privacy policy
  • GDPR compliant
  • Files stored in Europe
  • No model trained on your files

Questions about automatic subtitling

What is Hello8?

Hello8 is an automatic subtitling platform: it transcribes your video or audio, translates the subtitles into more than 90 languages, then its AI Reviewer proofreads every subtitle. It is built for video creators, training teams, agencies and cultural institutions. The team has already delivered more than 10,000 videos.

How does Hello8’s automatic subtitling work?

You upload a video or an audio file. Hello8 transcribes the speech and translates it if you want. Then you run the AI Reviewer: it reads every subtitle and fixes the mistakes. You export to SRT, VTT, ASS, or a video with burned-in subtitles, depending on your plan.

Do I need an account or a credit card?

An account, created with Google or an email address, is all you need. It is free to start and no credit card is asked for at sign-up. To proofread a subtitle file you already have, SubReviewer needs no account for the preview.

What does the AI Reviewer fix?

The names in your glossary, hesitations and false starts, sentences too heavy to read, slips of spoken language (agreement, verb forms), spelling, numbers according to your rule, typography (curly quotes, capitals) and, on a translation, faithfulness to the meaning of the source. Reading speed and line breaks are set separately, according to your thresholds.

See the AI Reviewer in detail
Which languages can I subtitle?

More than 90 languages, for transcription and for translation. The finest proofreading rules cover English and French; other languages are reviewed with general rules.

See all languages
Which formats can I upload and export?

You upload a video or an audio file (MP4, MOV, WebM, MP3, WAV, AAC, M4A, OGG). Depending on your plan, you export to SRT, VTT, ASS, or a video with burned-in subtitles.

See pricing
Are my videos used to train an AI?

No. Your files are stored in Europe, in line with the GDPR, and are never used to train a model.

Privacy policy
Can I get subtitles I already have proofread?

Yes, with SubReviewer: upload an SRT, VTT or ASS file and the same AI Reviewer proofreads it. The preview is free and needs no account.

Open SubReviewer

Another question? Talk to someone

Try the best subtitles on your own video.

Choose your video

Free to start, no credit card required. All you need is an account.

SubReviewerAlready have your subtitles?Get them proofread, no account needed.