Generate perfectly-timed Portuguese subtitles for any video. Sonix creates SRT and VTT files ready for YouTube, Vimeo, Facebook, and all major video platforms.
Upload your video file from your computer, Dropbox, Google Drive, or paste a URL. Sonix supports MP4, MOV, AVI, and 40+ other video formats.
Sonix AI automatically transcribes the Portuguese audio from your video with industry-leading accuracy. Speaker labels are added automatically.
Polish your transcript in our browser-based editor with synchronized video playback. Correct any errors and adjust timing as needed.
Fine-tune subtitle timing with our precision tools. Set line breaks, adjust duration, and ensure perfect synchronization with your video.
Download your Portuguese subtitles in SRT or VTT format. Upload directly to YouTube, Vimeo, or any platform that accepts subtitle files.
SRT (SubRip) is the most widely compatible subtitle format, supported by most video players and platforms. VTT (WebVTT) is the HTML5 standard that supports styling and positioning. Sonix exports both formats so you can use whichever works best for your platform.
After downloading your SRT file from Sonix, go to YouTube Studio, select your video, click 'Subtitles', then 'Add Language' and choose Portuguese. Click 'Add' under subtitles and upload your SRT file. YouTube will automatically sync the subtitles with your video.
Yes! Sonix provides precision timing tools in the editor. You can adjust start and end times for each subtitle line, set line breaks, and fine-tune synchronization. Changes are reflected in real-time as you watch the video.
Sonix delivers 85-99% accuracy for Portuguese transcription depending on audio quality. Our timing algorithm ensures subtitles appear at exactly the right moment. You can review and edit in our browser-based editor before exporting.
VTT format supports basic styling like bold, italic, and positioning. For more advanced styling (fonts, colors, backgrounds), you'll need to use your video editing software or the platform's subtitle customization features after uploading.
There's no limit on the number of subtitle files you can create. Sonix charges per minute of audio/video transcribed, not per export. Create as many subtitle files as you need from a single transcription.
AI-powered timing algorithm ensures subtitles appear exactly when speakers talk, with precision down to the millisecond.
Review and edit your subtitles with synchronized video playback. Make changes and see results in real-time.
Export to SRT or VTT format compatible with YouTube, Vimeo, Facebook, and virtually every video platform.
Get your Portuguese subtitles in minutes, not hours. Upload, transcribe, and export without waiting in queues.
This technology managed to shock me! It saved me so much time and effort!
After trying a number of MP3 transcribers, I am most impressed with Sonix! It was easy to use and was much more accurate than any of the others that I tried.
You guys saved me hours of work, reduced my stress level the moment I started and saw the first result coming in.
It is so easy to use, very intuitive. Everything 'works'. It is so simple and hassle-free.
I was simply awed by speed and accuracy of your transcription service.
Your UI and UX was one of the best I've seen. And I've seen a lot of them. Clean, simple, and pretty easy to edit.
Was using another software before, but their prices went up. Your prices are better and the transcription seems more accurate. I also like that you automatically take out all of th...
Of all the programs that do this, I found you the best!
Upload your video and get professional Portuguese subtitles ready for any platform. Start with 30 minutes free—no credit card required.
AI transcription and translation in 53+ languages.
