安全・高速・ブラウザ完結の Subtitle Timing Synchronizer & Video Sync

Synchronize delayed, early, or drifting subtitle files (SRT, VTT, ASS) with millisecond precision, 2-point linear drift stretching, framerate conversion, and live video overlay preview 100% locally. 100%ブラウザ内完結、会員登録不要、サーバーアップロード一切なし。