Police interview transcription software converts recorded interviews, calls and other spoken evidence into structured, searchable transcripts, so investigators can find the moments that matter without replaying every recording from start to finish.
S21 Transcriber does this for law enforcement and major crime investigations. It reduces manual listening time, helps teams find key moments faster, and supports structured review and reporting, fully offline for sensitive investigative environments.
Investigators can search spoken content for names, phrases, locations, events and key terms, jump from a transcript line straight back to the source audio or video to check context, separate speakers, then flag, edit and export the sections needed for reporting or case building.
Investigators often have to work through interviews, calls, body-worn video and other recordings by listening from start to finish, making it harder to find the moments that matter quickly and consistently.
That is slow when a case is moving fast, and it is inconsistent when different officers hear the same recording in different ways. Sending the audio to a cloud transcription service solves the speed problem and creates a much bigger one, because the material is sensitive and the environment is not yours to control.
Convert interviews, calls, recordings and video files into structured transcripts for review.
Find names, phrases, locations, events and key terms without replaying entire recordings.
Find names, phrases, locations, events and key terms without replaying entire recordings.
Find names, phrases, locations, events and key terms without replaying entire recordings.
Mark important sections, edit transcripts and prepare content for reporting or case building.
Tag, edit and export relevant transcript sections for reporting, case preparation or wider review.
S21 Transcriber makes it easy to turn interview recordings, phone calls and video evidence into clear, reliable transcripts, with no cloud and no data risk.
Whether it is US or UK English or multi-language recordings, S21 Transcriber delivers fast, accurate results with speaker separation, advanced search and intuitive editing.
S21 Transcriber helps investigators move from long recordings to focused review by turning spoken evidence into clear, searchable transcripts. Teams can find key words, phrases and relevant sections faster, check them against the original audio or video, and prepare the material needed for reporting or case review.
Create a new case in just a few clicks with the easy-to-use case setup. Simply add the media, fill in the case details and select the number of speakers, then let S21 Transcriber do the rest.
Core features cover case creation, editing speaker names, searching and flagging transcript lines, and generating reports.
S21 Transcriber supports the review of spoken evidence from a wide range of audio and video sources.
No cloud and no data risk, which matters when the recording is a suspect interview.
Designed around major crime investigations rather than adapted from a business meeting tool.
See how investigative teams are using S21 Transcriber to analyse evidence and progress complex cases: Whispers In The Dark, The Silence That Spoke, No Time For A Translator, Breaking The Language Barrier and The Voices In The Haystack.
You can also browse the full case study library.
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