AI-Powered Transcription with
Speaker Identification

Know who said what.

Upload any video or audio file. Knowbase transcribes it, identifies every speaker, and lets you chat with the content — all with timestamp citations.

Three steps to transcribe any recording

Upload your file, let AI do the work, then chat with the transcript.

Upload

Drag and drop any video or audio file into Knowbase. Supports MP4, MOV, AVI, MP3, WAV, M4A, and more — up to 1 GB.

AI Transcribes & Identifies Speakers

Knowbase uses state-of-the-art AI to transcribe your content with near-human accuracy and automatically label different speakers.

Chat, Export, Search

Ask questions about the recording, export subtitles in SRT/VTT/TXT, or search across all your transcriptions at once.

Everything you need for audio and video transcription

Speaker Diarization

AI automatically identifies and labels different speakers throughout your recording. See exactly who said what in every segment.

Speaker Renaming

Replace generic "Speaker 1" labels with real names. Names update across the transcript, in AI answers, and in exports.

SRT / VTT / TXT Export

Download transcriptions as subtitle files (SRT, VTT) or plain text. Speaker labels are included in every format.

Speaker-Scoped Queries

Ask about what a specific speaker said. The AI filters retrieval to that person's segments and cites the exact timestamps.

Voice Note Recording

Record voice notes directly in the app. Knowbase transcribes and indexes them so you can search and chat with your spoken notes.

Timestamp Citations

Every AI answer includes clickable timestamp references. Click to jump to the exact moment in the recording and verify the information.

AI identifies every speaker automatically

When you upload a recording with multiple speakers, Knowbase's AI analyzes voice patterns to distinguish each person. You see labeled speaker turns in the transcript — no manual work required.

  • Works with any number of speakers
  • Handles overlapping speech and accents
  • Speaker labels appear in chat answers and exports
Transcription Transcribing

Download your transcriptions in any format

SRT (SubRip)

Industry-standard subtitle format. Compatible with every major video player and editing tool.

VTT (WebVTT)

Web-native subtitle format for HTML5 video players, streaming platforms, and web applications.

TXT (Plain Text)

Clean text transcript with speaker labels and timestamps. Perfect for notes, reports, and documentation.

Who uses AI transcription?

📝

Meeting Recordings

Transcribe team meetings and client calls. See who said what, extract action items, and search across meeting history.

🎤

Interviews

Transcribe research interviews and job interviews. Speaker labels make it easy to follow the conversation and find quotes.

🎧

Podcasts

Turn podcast episodes into searchable text with speaker labels. Create show notes and repurpose content automatically.

🎓

Lectures & Presentations

Transcribe educational content and conference talks. Students and attendees can search and chat with the material.

⚖️

Legal Depositions

Transcribe depositions and hearings with speaker identification. Search for specific testimony with timestamp precision.

🩹

Medical Consultations

Transcribe patient consultations and medical conferences. Speaker labels distinguish doctors, patients, and other participants.

Frequently asked questions

How does speaker diarization work?
Knowbase uses AI voice analysis to detect different speakers in your recording. The system identifies distinct voice patterns and labels each segment with a speaker identifier. You can then rename these to real names.
How many speakers can it identify?
There is no hard limit on the number of speakers. The AI can handle recordings with many participants, such as panel discussions or large meetings. Accuracy is highest with clear audio and distinct voices.
What audio and video formats are supported?
Knowbase supports all major formats: MP4, MOV, AVI, MKV, WebM for video, and MP3, WAV, M4A, AAC, OGG, FLAC for audio. Files up to 1 GB are supported.
Can I rename speakers after transcription?
Yes! Click any speaker label in the transcript to rename it. The new name updates everywhere — in the transcript view, in AI chat answers, and in exported subtitle files.
What subtitle formats can I export?
You can export transcriptions as SRT (SubRip), VTT (WebVTT), or TXT (plain text). All formats include speaker labels and timestamps.
Can I ask about a specific speaker?
Yes! Speaker-scoped queries let you ask questions like "What did Sarah say about the timeline?" The AI filters retrieval to that speaker's segments and provides answers with timestamp citations.
How accurate is the transcription?
Knowbase uses state-of-the-art AI (OpenAI Whisper) which achieves near-human accuracy across 90+ languages. Accuracy depends on audio quality — clear recordings in quiet environments yield the best results.
What languages are supported?
Over 90 languages are supported with automatic language detection. The AI handles accents, multilingual content, and specialized vocabulary.

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