Fix caption text and timing line by line, with your video playing alongside.
Caption files up to 2 MB: SRT, WebVTT, YouTube SBV or ASS.
Runs in your browser. Nothing is uploaded.
Open or paste a caption file to begin.
Studio times captions to your voice. If a word is off, ask for the fix in plain words.
Type in any row. Find and Replace all corrects a name that was misheard throughout the file in one go. Rows that break a readability limit are outlined in orange with the reason: too long a line, too fast to read, too short on screen, or overlapping the row before.
With the video loaded, press Play on a row to jump there. Pause the video at the moment a line should appear and press Start = now, or where it should go and press End = now. That is quicker and more accurate than typing times.
Split cuts a caption at the cursor and divides its time in proportion to the text. Join next merges two captions. Use them to turn long captions into short ones that fit two lines.
No. The video and the captions are opened by your browser and never leave your device.
Thousands. They are shown 40 to a page so the editor stays quick.
The caption breaks one of the standard reading limits: more than 42 characters on a line, more than two lines, faster than 20 characters a second, or on screen for under 5/6 of a second.
Use the timing shifter for that.
Check a caption file for lines that are too long, too fast, too short or overlapping, and fix them.
Move captions earlier or later, from one point onward, or stretch them to fix drift.
Burn an SRT or WebVTT caption file into a video so the captions show on every platform.
Convert caption files between SRT, WebVTT, YouTube SBV and plain text, in your browser.
Convert the caption file, then inspect its cue times and text. A format conversion is not a spelling or synchronization repair.
Read the guide Guide · CaptionsMeasure whether the error is a constant delay or growing drift. Shift the whole file only when one offset fits the whole recording.
Read the guide Guide · CaptionsUse characters per second to find dense cues, then listen and rewrite the timing or line breaks without changing what was said.
Read the guideUpload the raw recording. Studio cuts the ums, retakes and long pauses, adds captions and makes short clips. 30 free minutes, no card.