Multi-Camera Sync for Bodycam and Dashcam Evidence

One Event, Twelve Recordings, One Master Clock

Evidence Copilot links bodycam, dashcam, and interview-room footage of a single incident to one synced timeline — with an interleaved transcript and citations to the exact second, built for criminal-defense review.

The Sync Problem Every Defender Knows

• A dozen overlapping recordings, watched one at a time — 4-6 hours per video — A single traffic stop can arrive as bodycam, dashcam, and interview-room footage, each on a different clock, each requiring separate review before you can mentally align them. Reviewing body camera transcripts takes 4-6 hours per video, and the alignment work — matching the officer's dashcam statement to the bodycam exchange to the interrogation-room admission — happens in your head, on a legal pad. When you're prepping a motion to suppress or a Fourth Amendment timeline, scrubbing three players side by side is where billable hours and critical inconsistencies go to die.
• Gaps you can't see until it's too late — about one-third of bodycam videos miss part of the incident — Research on bodycam evidence in summary judgment motions found that about one-third of bodycam videos do not capture the entire incident. When recordings sit on unaligned clocks, a missing 90-second window — the gap between the dashcam cutting out and the bodycam starting, or the stretch before a Miranda warning appears on the interview footage — is easy to miss until cross-examination. Comparing recordings across unaligned timelines is exactly how Fourth Amendment violations and missing-footage arguments get overlooked in discovery review.
• Discovery dumps keep growing — digital evidence volume is up 40% per year — Digital evidence is a factor in roughly 90% of criminal cases, and digital evidence volume is growing at 40% per year. Discovery now arrives by the gigabyte: bodycam files with names like X13qrt9__x3455, jail calls, 911 audio, scanned police reports with no text layer. Real-time video review consumes hours a contracted case can't spare, per-video transcription costs stack on top, and only 37% of lawyers actually feel productive against that backlog.

Why Criminal-Defense Teams <span class="gradient">Choose Evidence Copilot</span>

• Dashcam-and-bodycam timeline alignment without the legal pad — Link bodycam, dashcam, and interview-room footage of one event to a single master clock. Evidence Copilot computes auto-sync proposals from word-timing correlation — reported with match evidence like '31 word matches, ±0.2 s spread' — and never auto-applies them. You review the proposal, accept or reject it, and get synced playback with an interleaved transcript, so every timestamp you need for a suppression motion or impeachment exhibit is already anchored to the master clock with word-level timestamps you can quote verbatim.
• Grounded citations, human review, immutable originals — Every AI output is marked AI-generated and pending human review, originals are immutable, and every redaction is a new derived file with a full audit trail. Auto-signals on ingest compare each new file against earlier evidence — a police report statement that conflicts with the bodycam, or a jail call that contradicts the interview-room account — surfaces as an unreviewed signal before anyone asks. The product never makes legal conclusions; it makes your Fourth and Fifth Amendment analysis faster and checkable.
• Published pricing built for defense economics — Published pricing built for defense economics: Solo $39/user/mo with 15 media-processing hours, Firm $99/user/mo with 60 hours and priority queue, PD Office $750/attorney/yr with 100 hours. Overage is metered and hard-capped at 3x included hours, so a runaway discovery dump can't overbill you mid-case. Every plan includes the full workspace — multi-camera sync, transcription, redaction, and the AI evidence agent — with no feature tiers.

What's included

• Multi-camera sync links bodycam, dashcam, and interview-room footage to a single master clock with synced playback and an interleaved transcript — auto-sync proposals are computed from word-timing correlation and reported with match evidence like '31 word matches, ±0.2 s spread', never auto-applied.
• Transcription with Deepgram Nova delivers speaker diarization and word-level timestamps; one-click speaker renaming propagates across every segment so your verbatim quotes stay consistent.
• The AI evidence agent answers questions with clickable citations into the exact second of video or page of the PDF, grabs video frames, extracts clips, and writes notes, timeline events, and tasks.
• Auto-signals on ingest compare every new file against earlier evidence in the case, surfacing candidate inconsistencies — report vs bodycam, statement vs call audio — as unreviewed review signals.
• Frame-accurate video redaction, word-level audio redaction, and image/PDF redaction keep originals untouched; AI-suggested regions file as cards marked 'AI-suggested — needs review' and nothing is auto-applied.
• Agent playbooks like Suppression Motion Prep sweep consent, search scope, stop duration, K-9, and Miranda issues and draft a motion outline with both sides quoted and cited — saved as attorney-review notes.

Quick wins

• Use the auto-sync proposal's match evidence ('31 word matches, ±0.2 s spread') as your own documentation of how the master-clock alignment was established — useful when opposing counsel challenges the reliability of your synced playback in a suppression hearing.
• Run the Miranda Timeline playbook on synced interview-room and bodycam footage to build a chronological custodial-interrogation timeline with both sides quoted and cited to the exact second.

How it works

1. Upload the whole dump — Drag in bodycam, dashcam, interview footage, 911 audio, jail calls, police reports, and scans — up to 2 GB per file by web upload or email attachment, each case with its own inbound email address.
2. Sync and review on one clock — Transcripts generate with speaker diarization and word-level timestamps; multi-camera sync proposals computed from word-timing correlation arrive with match evidence for you to accept or reject.
3. Cite the exact second — Ask the AI evidence agent anything — every answer carries citations that seek the exact video moment, ready for suppression prep, cross-exam drafts, and exhibit packs with a MANIFEST.md citation index.

How Evidence Copilot <span class="gradient">Puts Every Camera on One Clock</span>

• Multi-camera sync: link bodycam + dashcam + interview-room footage to one master clock for synced playback and an interleaved transcript — auto-sync proposals show their match evidence and are never auto-applied.
• Every AI answer cites the exact source moment — click a citation and the video seeks to the precise second, or the PDF opens to the exact page.
• Auto-signals on ingest compare each new file against earlier evidence in the case, surfacing candidate inconsistencies like report-vs-bodycam or statement-vs-call-audio before anyone asks.

Why we're different

• Sync proposals show match evidence — word matches and timing spread — never auto-applied.
• Every AI answer cites the exact second of video or page of the PDF.
• Defense-only by design — no prosecution or law-enforcement use cases.
• Originals are immutable; every redaction is a derived, audited file.
• Auto-signals surface report-vs-bodycam inconsistencies before you ask.
• One-click speaker renaming propagates across every transcript segment.
• Query cases read-only from Claude Desktop via an audited MCP server.
• Published pricing with hard-capped overage — no sales wall, no feature tiers.

Built for US criminal-defense attorneys, law clerks, investigators, and public-defender offices — grounded citations, human review on every AI output, and published pricing with no feature tiers.

What clients say

The sync proposal told me exactly how many word matches backed the alignment before I accepted it. I could see the bodycam and dashcam on one clock instead of scrubbing two players side by side — and for the suppression hearing, every timestamp I cited was already anchored to the master clock.

— Marcus Delgado

Interleaved transcripts changed how I prep cross. I can pull the same exchange from the interview room and the bodycam, both cited to the exact second with word-level timestamps, and drop both into my notes. Verbatim statements for impeachment used to take a legal pad and an afternoon; now it's part of the review.

— Priya Raghavan

What sold me was the citations. Every answer links to the moment it came from, the originals never change, and every redaction is a new derived file with an audit trail — which matters when we're turning discovery over. I can hand my investigator a timestamped timeline instead of hours of raw footage.

— Dana Whitfield

Frequently asked questions

Book a 20-minute walkthrough at evidencecopilot.com/book, or start on the Solo plan at evidencecopilot.com/signup — see your own footage synced to one clock.