CCTV Time Corrector
Use one or more reference points to calculate the offset and linear clock drift of a recorder, then convert CCTV times to real time (or real time back to CCTV time) in batch.
Runs 100% in your browser
Files are never uploaded
1 · Reference points
Record what the recorder showed at a moment when you knew the real time, for example by filming the DVR screen next to a phone, or using a known event such as a timestamped receipt. Two or more points spread over time also measure clock drift.
2 · Recorder clock error
Enter at least one reference point.
3 · Convert times
Converted times appear here.
Results are automated estimates for investigative reference only and are not evidence. Always verify independently. Read the disclaimer.