Create Portuguese closed captions

Make your videos accessible with ADA-compliant Portuguese closed captions. Sonix automatically generates accurate captions that meet Section 508 and WCAG 2.1 accessibility standards.

Free to start — no credit card required.See pricing

ADA compliant
508 compliant
WCAG 2.1 ready
Portuguese transcription guide

Create Portuguese closed captions
in minutes

  1. 1
    Upload your video~1 min

    Upload your video file from your computer or cloud storage.

    50+ formats supported
  2. 2
    AI captioning~5 min

    Sonix AI generates Portuguese closed captions with models trained for accessibility compliance.

    Word-level timestamps
  3. 3
    Review captions~2 min

    Review and correct your captions in the browser editor with synchronized video playback.

  4. 4
    Export and publish~10 sec

    Download your Portuguese captions as SRT or VTT files, ready for YouTube, Vimeo, or your website.

    30+ export formats
The Portuguese language

Understanding Portuguese transcription

Who transcribes Portuguese content?

Podcast producers, broadcasters, and video teams in Brazil and Portugal transcribe Portuguese interviews and episodes for editing, captions, and show notes. Researchers, legal professionals, NGOs working in Lusophone Africa, and diaspora media in countries like the United States, France, and Luxembourg also rely on Portuguese transcription.

Portuguese dialects and accents

Portuguese has two major standards: Brazilian Portuguese and European Portuguese, which differ noticeably in pronunciation, rhythm, and some vocabulary. African varieties spoken in Angola, Mozambique, and other Lusophone countries generally follow the European standard, while Brazil itself has distinct regional accents such as Carioca, Paulista, and Northeastern speech.

Where Portuguese is spoken

Portuguese is spoken in Portugal, Angola, Cape Verde, Guinea-Bissau, Mozambique, Sao Tome and Principe, Brazil, and parts of Namibia, Germany, France, Luxembourg, and Spain.

5 min
Average turnaround
1-hour video captioned in ~6 minutes
99%
Caption accuracy
Industry-leading Portuguese recognition
SRT/VTT
Caption formats
Compatible with all major platforms
30+
Platforms supported
YouTube, Vimeo, Facebook, and more
Portuguese transcription FAQ

Frequently asked questions about
Portuguese closed captions

What's the difference between closed captions and subtitles?

Closed captions include all audio elements (dialogue, sound effects, music cues) for deaf and hard-of-hearing viewers. Subtitles typically only include dialogue and are meant for viewers who can hear but don't understand the spoken language. Sonix can create both.

Are Sonix captions ADA compliant?

Yes. Sonix generates captions that meet ADA (Americans with Disabilities Act), Section 508, and WCAG 2.1 accessibility requirements. Our captions include accurate timing, proper synchronization, and support for required caption formats.

Can I add sound effect descriptions to captions?

Yes! In the Sonix editor, you can add non-speech audio descriptions like [music playing], [applause], or [door closes]. These descriptions help deaf and hard-of-hearing viewers understand the full audio context.

How accurate are Portuguese closed captions?

Sonix delivers 85-99% accuracy for Portuguese captioning depending on audio quality. Clear audio with minimal background noise achieves the best results. You can review and edit captions in our browser-based editor.

What platforms support closed captions?

All major video platforms support closed captions including YouTube, Vimeo, Facebook, Twitter, LinkedIn, and Wistia. Sonix exports SRT and VTT formats compatible with all these platforms and more.

Can I burn captions into my video?

Yes! Sonix offers a burn-in feature that permanently embeds captions into your video file. This is useful for social media where closed captions may not display automatically. See our burn-in subtitles service for more details.

Does Sonix support both Brazilian and European Portuguese?

Yes. You can upload audio or video in either variety, transcribe it, edit the transcript in your browser, and export it in a range of formats.

Can Sonix transcribe Portuguese audio with accented characters?

Yes. Portuguese transcripts include the language's diacritics, such as ã, õ, and ç, and they carry through to exported files.

Can I translate a Portuguese transcript into English?

Yes. After transcribing your Portuguese audio, you can translate the transcript into English or other supported languages and export the result.

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