OPUS to text — drop OPUS files from your WhatsApp export and get transcript plus summary in minutes.
Batch transcribe multiple OPUS files. Merge into the chat timeline. Then run analysis for bullets and action items.
Upload your chatHow it works
Export your WhatsApp chat with media. Voice notes are typically PTT-*.opus.
Upload the .zip. We detect OPUS files, transcribe them, and merge into the timeline.
Get transcript + summary. Run Meeting Recap or General Summary for action items and key points.
What you get
OPUS is common in WhatsApp — we handle it end to end.
Why OPUS exists in WhatsApp voice notes
WhatsApp uses OPUS for voice messages for good reasons.
- •Efficiency — OPUS gives strong audio quality at low bitrate, so voice notes are small and fast to send.
- •Standard in exports — when you export a chat with media, voice notes usually appear as PTT-YYYYMMDD-WAXXXX.opus.
- •We transcribe them, merge the text into the message timeline, and run analysis so you get searchable text and summaries.
Batch transcribe multiple OPUS files
No need to upload one file at a time.
Upload your full WhatsApp export .zip. We find all OPUS voice notes, transcribe them in order, and merge the transcripts into the chat timeline. Then you run General Summary or Meeting Recap to get bullets, decisions, and action items — all in one flow.
Key benefits
Use cases
Work voice notes — client updates, stand-ups, project syncs
Meeting recaps — when key decisions were in voice
Personal — long voice threads into searchable text
WhatsApp export with media — get transcript + summary from OPUS
Frequently asked questions
OPUS is an open, royalty-free audio codec. WhatsApp uses it for voice messages, so when you export a chat with media, voice notes usually appear as .opus files (e.g. PTT-20250124-WA0001.opus). We transcribe them and merge the text into your chat timeline.
No. Upload your WhatsApp export .zip as-is. We detect OPUS files, transcribe them, and merge the results. No separate converter or tool needed.
Yes. Upload the full export; we process all OPUS voice notes in the .zip. They’re transcribed in order and merged into the message timeline. Then you run analysis (e.g. Meeting Recap) to get summaries and action items.
We support OPUS (primary for WhatsApp voice notes), M4A, and MP3 when they appear in your export. WhatsApp typically uses OPUS for voice messages.
Audio is sent only for transcription and is deleted after processing. We don’t store your voice note files. See our Privacy Policy.
Yes. After transcription we merge voice text into the timeline and run analysis. Use General Summary for key points, or Meeting Recap for decisions and action items.