Speaker Diarization (Speaker Detection): Add Accurate Speaker Labels to Transcripts
Automatically detect who spoke when and add speaker labels to your transcripts — ideal for meetings, interviews, podcasts, and research.

What Is Speaker Diarization?
Speaker diarization (also called speaker detection) is the process of separating an audio recording by speaker and labeling each turn. The result is a transcript that shows who said what and when, which dramatically improves readability for meetings, interviews, podcasts, user research, and panel discussions.
Why It Matters
- Clarity: Follow the conversation easily with speaker‑by‑speaker turns.
- Editing speed: Skim and extract quotes without guessing who spoke.
- Searchability: Filter by speakers in your notes or downstream tools.
- Compliance: Audit trails are clearer when speakers are identified.
- Insights: Analyze talk time, interruptions, and participation patterns.
How Speaker Detection Works in Safe Scriber
When you enable diarization, Safe Scriber detects speaker change points and assigns speaker labels (e.g., Speaker 1, Speaker 2). For privacy, your media is processed in‑memory and deleted immediately after transcription — no storage, no training use.
- Upload audio/video or paste a YouTube link.
- Toggle Speaker diarization (Speaker detection).
- Transcribe and review — speaker turns and timestamps will appear in the transcript.
- Export with labels to TXT or DOCX; timecoded SRT/VTT coming soon.
Best Practices for Better Diarization
- Use clean recording techniques (closer mics, quiet rooms).
- Minimize crosstalk; have participants avoid speaking simultaneously when possible.
- Prefer mono or well‑balanced stereo; avoid heavy post‑effects.
- Long pauses between turns help algorithms segment accurately.
Common Use Cases
- Meetings: Who said what action item and when.
- Interviews: Separate interviewer from guest for clean quoting.
- Podcasts: Multi‑host episodes are easier to edit and repurpose.
- User research: Attribute insights to specific participants.
- Panels and lectures: Track moderator vs. speakers in Q&A.
Privacy & Security
As with all features in Safe Scriber, diarization is privacy‑first. Your recordings are processed in‑memory and deleted immediately upon completion. We do not use your content for training. See why privacy matters in transcription and privacy in AI transcription.
Get Started
Try diarization now — upload audio/video or use a YouTube link. If you need plain audio, see MP3 to text. For publishing or SEO, read how to use transcripts for SEO.