Subtitle Converter
Convert subtitles between SRT, WebVTT and more, or retime them.
Questions
Which format does my video player need?
SRT works almost everywhere: VLC, most TVs, Plex, YouTube. WebVTT is for web video (the HTML <track> element). ASS keeps styled anime subtitles. YouTube also takes SBV, and broadcasters and streaming services often ask for TTML.
The subtitles drift more and more out of sync. What’s wrong?
They were made for a video at a different frame rate: usually 23.976 fps (film) against 25 fps (European TV). Pick that conversion under “Frame rate” and the timing stretches to match. If they are off by the same amount all the way through, use “Shift” instead: a negative number shows them earlier.
Is formatting kept?
Italic, bold and underline are kept wherever both formats support them. ASS styling beyond that (fonts, colors, positions, karaoke) has no equivalent in SRT or WebVTT and is dropped.
What frame rate does MicroDVD use?
MicroDVD (.sub) counts frames, not seconds, so it needs the video’s frame rate: 23.976 unless the file says otherwise in its first line. Set it under “MicroDVD frame rate” when reading or writing .sub files.
Is it free? Do I need an account?
It is free to use and there is nothing to sign up for. There are no watermarks and no daily limits.
Missing something, or not working as it should? Tell us