Broadcast Video QC — Black, Freeze & Silence
Review broadcast programme masters for black frames, freeze frames and audio silence before TV delivery. Set QC thresholds, inspect timecoded findings and record your review decisions. This is a technical preflight for editors and delivery teams, not a general video quality score.Read more ↓Show less ↑
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Frequently asked questions
Are black frames, silence and freezes always errors?
No. A fade to black, deliberate still image or dramatic pause may be intentional. This tool produces review flags with timestamps so you can decide what needs editing. It does not automatically remove footage.
What do the detector settings mean?
Minimum duration filters out shorter events. The silence threshold is measured in dBFS; lower values flag only quieter audio. Black detection requires at least 98% dark pixels with a 0.1 pixel threshold. Freeze detection uses a −60 dB frame-difference threshold, so static scenes can be flagged too.
Does the checker scan the whole file?
It scans the first video stream and first audio stream when present, locally in your browser. Choose a file under 300 MB. The interface shows up to 100 events and the downloadable JSON includes all retained events. Extremely event-heavy files require a shorter clip or a longer minimum duration. This is not a complete broadcast QC certificate.
