Subtitle Converter
Converts between SRT, VTT, ASS, SMI and plain text, fixing the encoding along the way.
Drop a subtitle file to convert
SRT, WebVTT, ASS/SSA or SMI — including the EUC-KR SMI files old Korean rips ship with. The encoding is detected from the bytes, never assumed.
Everything happens in this tab. Nothing is uploaded.
Feed it from
Video Editor
Assembles clips into a YouTube or Shorts upload in the browser: trim, order, transitions, a music bed and subtitles. Same-batch AI clips with hard cuts export losslessly without re-encoding.
Subtitle Sync
Shifts or stretches subtitle timings by a fixed offset or by matching two reference points.
Extract Embedded Subtitles
Lists the soft subtitle tracks inside an MKV or MP4 and exports the chosen one as SRT or VTT.
Encoding Detector & Converter
Guesses a file’s character encoding — CP949, Shift_JIS, GB18030, Windows-1252 and more — with a side-by-side preview of each candidate, then re-saves it as UTF-8 (with or without BOM), UTF-16 or EUC-KR/CP949.
Next
These accept what this tool produces, so the result can go straight in.
Broken Hangul Recovery
Repairs Hangul mangled by a CP949/UTF-8 mix-up by trying every plausible encoding path and previewing each.
Burn Subtitles
Renders an SRT, VTT, ASS or SMI file permanently into the video frames with size, position, colour and outline control, drawn with the browser’s own fonts so Korean needs nothing extra.
Subtitle Sync
Shifts or stretches subtitle timings by a fixed offset or by matching two reference points.
Audio Converter
Converts between MP3, WAV, FLAC, AAC, OGG and Opus with bitrate and sample-rate settings.
Extract Audio from Video
Pulls the audio track out of a video as MP3, WAV, M4A or FLAC, or copies it without re-encoding.
Audio Trimmer
Cuts a section out of an audio file on the waveform, with fade in and fade out.