Whisper transcription for Portuguese
OpenAI Whisper transcribes Portuguese into its native script with word-level timing. Runs entirely in your browser via WebAssembly — no upload, no API key.
"Hello, world!"
"Amazing video!"
"Subscribe now!"
"Watch this..."
Whisper · Portuguese · Free · No watermark
Free Portuguese subtitle generator
Drop a Portuguese-language video and Captionly transcribes it with AI Whisper, lets you fix names and proper nouns with a click, and exports SRT, VTT, ASS or a burned-in MP4. Detects Portuguese automatically. Free, in-browser, no signup.
Portuguese-language video has its own audience and its own search index. Captions extend the reach: they make Portuguese video accessible to sound-off viewers, indexable to search in Portuguese, and ready for downstream translation. Captionly is a free Portuguese subtitle generator that runs Whisper locally in your browser, supports inline editing, and exports the formats every editor and platform accepts.
Free AI subtitle generator — drop a video to get started
Drop your video here
or click to browse your files
Supports MP4, MOV, AVI, WebM (max 500MB)
100% freeno signupno watermark50+ languagesSRT · VTT · TXTprivate by defaultAI-powerededit on the flyTikTok-readypodcast-readycreator-loved100% freeno signupno watermark50+ languagesSRT · VTT · TXTprivate by defaultAI-powerededit on the flyTikTok-readypodcast-readycreator-loved
✦ Built for Portuguese-language content
Built for Portuguese-language content
Accuracy on Portuguese audio, plus the controls editors need to ship.
Auto language detection for Portuguese
Drop the file and Captionly detects Portuguese automatically. No need to pick a language up front, no setup screen.
Click-to-fix Portuguese transcript
Misheard a name or proper noun? Click the word, type the correction in Portuguese, the timing stays locked. Glossary handles recurring slips across the whole video.
Native Portuguese characters preserved
All exports are UTF-8 so Portuguese characters, diacritics and punctuation survive cleanly into SRT, VTT, ASS and the burned-in MP4.
Burn into MP4 or export Portuguese SRT
Download a finished MP4 with Portuguese subtitles baked in, or an SRT to drop into YouTube Studio, CapCut, Premiere, DaVinci Resolve or FFmpeg.
No watermark on your Portuguese video
Free forever — no email gate, no Captionly logo on your Portuguese-language video, no daily quota.
About Portuguese transcription
Português- Script
- Latin
- Direction
- Left-to-right
- Language family
- Indo-European → Romance
- Native speakers
- ~265M
- Whisper accuracy
- ~95%
Accuracy figures are approximate (100 minus the word error rate reported in the OpenAI Whisper paper, Appendix). Real-world results vary with audio quality, accent and dialect.
✦ ShowcaseReal videos.
Real videos.
Real captions.
See how creators of every kind are using Captionly. Drag to browse, click to play.
EN0:42
Neon Pop
thischangedmylife
EN1:18
Box Highlight
andthat'swhenIquit
EN0:21
Gradient Wave
onemorerep!
EN2:04
Karaoke
Tokyoatgoldenhour
EN0:56
Bounce
bestadviceever
ES0:33
Outline
novasacreer
EN0:28
Shadow Pop
let'sgo!victory
EN1:45
Underline
watchthistrick
EN0:52
Glitch
thisisinsane
EN0:38
Minimal
feelthebeat
EN0:19
Rainbow
hitthatmove
EN0:47
Pill
waitforit
✦ FAQ
Portuguese subtitles — questions to ask
Practical answers for editors working with Portuguese-language video.
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Free · Whisper · Portuguese-ready
Caption your Portuguese video
Drop a Portuguese-language clip, edit the transcript if needed, ship an SRT or a captioned MP4. Free, in-browser, no signup.