Video frame scrubber

Uncanny is usually a single frame: a mouth still moving after the consonant ended, a blink that starts and finishes between two frames, a jaw that resets. Playing at speed hides exactly those, so the transport here is built for stepping.

Choose the frame rate the file was made at, then step forward or back. The read-out gives the timecode, the frame index at that rate and the position on the timeline, so a note you write can be found again by anyone.

Lip-sync drift is marked, not measured: park on the frame where the audio and the mouth disagree and add a mark with what you saw. The list keeps the timecodes in order, which is what a fix note needs.

Blink rate is counted by tapping the blink control when an eyelid closes. A person blinks roughly fifteen to twenty times a minute; generated faces often blink on a fixed interval or not at all. The rate and the average interval are computed from your taps over the video's duration.

A file you choose is played from a blob URL in this tab, so nothing is uploaded and frame stepping works on the actual media element. A remote URL plays the same way for direct video files, but a platform embed does not expose its timeline, so stepping is unavailable there.