Drop a video here or click to select
The browser previews supported video formats locally.
Drop an SRT or VTT file here or click to select
Import one subtitle file up to 5 MB and 2,000 cues.
Current time:
Select a cue, seek the video to its correct spoken moment, and capture two points far apart. Applying calibration corrects both offset and gradual timing drift.
Not captured
Not captured
Load a subtitle file or add a cue to begin editing.
Video and subtitle files stay in this browser tab and are not uploaded.
Edit SRT and VTT cue text and timing while previewing captions over a local video. Click a cue to seek, use the current video time for boundaries, or shift all cues together.
Timing validation reports invalid ranges, cues that are out of order, and overlaps. Overlaps are warnings because they can be intentional.
Related tools: Subtitle Validator · SRT Time Shifter