Premiere Pro を再起動し、メニュー「ウィンドウ」→「エクステンション」→「Clip Align」を開きます
ClipAlign — Detect Out-of-Sync Clips and Drop Markers in Premiere Pro
ClipAlign automatically finds clips that should be aligned but are off by just a few frames across video tracks, and adds sequence markers at those spots.
How to use
Choose a reference track and the tracks to check.
Set the tolerance (1–10 frames).
ClipAlign adds a sequence marker at each misaligned spot (marker color selectable).
Features
Detects clips whose start is off by 1 to N frames from the reference track
Tolerance selectable from 1–10 frames
Adds sequence markers automatically (marker color selectable)