How to convert OPUS to closed captions with Sonix

Sonix converts your audio-to-text using the latest artificial intelligence algorithms—it's fast, easy, beautiful, and affordable. We extract the speech from your OPUS file and help you create captions for your videos in minutes.

Convert OPUS to captions
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How to convert OPUS to closed captions with automated transcription 📋

Step 1: Create a free Sonix account to start converting your OPUS file to a closed caption file

Step 1

Sign up for a free Sonix trial account—includes 30 minutes of free OPUS to captions conversion.

Step 2: Upload your OPUS files from your computer, Google Drive, Dropbox, or by dragging it on the page.

Step 2

Upload the Opus Audio File file(s) (*.OPUS) from your computer, Dropbox, Google Drive, or by dragging it on the page.

Step 3: Select the language spoken in your OPUS file, then click 'Start Transcribing Now.'

Step 3

Choose the language spoken in the uploaded OPUS file. We support over 37 different languages including Russian, Chinese, Spanish, and English. Click the 'Start Transcribing Now' button.

Step 4: Sonix does all the work so grab a tasty cupcake. Our servers will extract the audio from your OPUS file and convert it to SRT.

Step 4

Sonix will then automatically transcribe the audio from your OPUS file and convert it to a simple text format. Grab a cupcake, it will take only a few minutes.

Step 5: Once your OPUS was converted to text, you might need to polish up the transcript. Now, you can easily do that with our AudioText Editor.

Step 5

Use the Sonix AudioText Editor to polish your transcript before we convert it to a caption file. Simply type in your browser to correct any words in your transcript.

Step 6: Download a SRT version of your OPUS file by clicking Export and selecting 'Subrip caption file (.srt).'

Step 6

Click the 'Export' button. Choose either 'Subrip subtitle file (.srt)' or 'WebVTT file (.vtt)' from the dropdown to download the closed caption version of your OPUS file. You can also adjust the character length and time duration length of each caption.

That's it! Your OPUS file has now been converted to closed captioning and is ready for the next step in your workflow!🎉

Thousands of incredible customers use SOnix to create closed captions from their OPUS files 💖

Google converts their OPUS audio files to closed captions with Sonix. You should too!Microsoft converts their OPUS audio files to closed captions with Sonix. You should too!NBC Universal converts their OPUS audio files to closed captions with Sonix. You should too!Harvard University converts their OPUS audio files to closed captions with Sonix. You should too!Stanford University converts their OPUS audio files to closed captions with Sonix. You should too!Yale University converts their OPUS audio files to closed captions with Sonix. You should too!ABC News converts their OPUS audio files to closed captions with Sonix. You should too!ESPN converts their OPUS audio files to closed captions with Sonix. You should too!Quartz converts their OPUS audio files to closed captions with Sonix. You should too!CNBC converts their OPUS audio files to closed captions with Sonix. You should too!CIBC converts their OPUS audio files to closed captions with Sonix. You should too!

Convert OPUS audio or speech to subtitle🔈

Frequently Asked Questions for Opus Audio File (*.OPUS)

What is a OPUS file?

The OPUS file is an audio file format that was created for use in Voice over IP (VoIP), video conferencing, or in-game chat. Since the OPUS codec is primarily used in Internet streaming applications, it isn't common. However, is it a lossy audio format that uses both SILK (used by Skype) and CELT (from Xiph.Org) codecs and supports variable bit rates from 6 kb/s to 510 kb/s.

Does Sonix transcribe audio files with a *.OPUS file extension?

Yes, Sonix does automatically transcribe audio files with a .OPUS file extension. Sonix is an online audio to text converter. Convert any audio (opus, mp3, m4a, wav, ...) or video (mp4, mov, avi, ...) file to text without installing any software! Sonix quickly and accurately transcribes *.OPUS files and converts them to text in a subtitle format.

Know anyone who needs to convert Opus Audio File (.OPUS) to subtitle?

We'd appreciate it if you tell them about Sonix—the best way to convert OPUS to subtitle.

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Create closed captions from your Opus Audio File files with Sonix 🚀

Sonix transcribes your audio and video files in over 37 languages so they are easy to search, edit, and share. Sonix is an online, fully-automated speech to text service that quickly converts Opus Audio File files to captions. Sign up today and start transcribing.

Fast, accurate automated transcription

Includes 30 minutes of free transcription

Transcribe and translate confidently knowing you’re backed by our award-winning team who is ready to answer your questions. You can also visit our Support Center for tips, articles, and videos.

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