AI subtitle generation uses speech recognition (ASR — Automatic Speech Recognition) to transcribe spoken audio into timed text. Our tool accepts MP4, MOV, AVI, MKV, and WebM files. Processing steps: 1) Extract audio track. 2) Split into segments by silence detection. 3) Run speech-to-text inference per segment. 4) Generate timestamps. 5) Output SRT/VTT subtitle file. Supported output formats: SRT (SubRip — universal, works everywhere), VTT (WebVTT — native HTML5 video), ASS/SSA (Advanced SubStation Alpha — supports styling).