How do I convert my OPUS files to subtitles with automated transcription? 
Sonix uses the best speech-to-text algorithms to convert your audio files (*.opus) to subtitles. Just follow these six easy steps:
Step 1
Sign up for a free Sonix trial account—includes 30 minutes of free OPUS to subtitles conversion.
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
Choose the language spoken in the uploaded OPUS file. We support over 37 different languages including English, Spanish, German, and French. Then click the 'Start Transcribing Now' button.
Step 4
Sonix will then automatically transcribe the audio from your OPUS file and convert it to a simple text format. Grab some tea, it will take only a few minutes.
Step 5
Use the Sonix AudioText Editor to polish your transcript before we convert it to a subtitle. It's like a word processor: simply type in your browser to correct any words.
Step 6
Click the 'Export' button. Choose either 'Subrip subtitle file (.srt)' or 'WebVTT file (.vtt)' from the dropdown to download the subtitle version of your OPUS file. You can also adjust the character length and time duration length of each subtitle.
That's it! Your OPUS file has now been converted to subtitles and is ready for the next step in your workflow!
Thousands of incredible customers create subtitles from their OPUS files with Sonix 
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.
Other ways to convert your OPUS audio files with Sonix
Convert Opus Audio File to subtitles (SRT & VTT) with Sonix 
Sonix automatically transcribes and translates your audio and video files in over 37 languages. Easily search, edit, and share your media files. Sonix is an online, fully-automated speech to text service that quickly converts Opus Audio File files to subtitles. Fast, accurate, and affordable. Millions of users from all over the world.
Includes 30 minutes of free transcription
