Burn SRT Subtitles to Video Online
Drop your video and an SRT file - GrepCut burns SRT subtitles into every frame. Great for accessibility, social sharing, and silent-play platforms.
Burned-in SRT subtitles become part of the picture. If your video is shared to a feed, played in an app with captions turned off, or downloaded by someone who may not keep the sidecar SRT file, the text still appears.
This is useful when you need predictable viewing on social clips, short demos, internal training videos, or translated exports. You are not relying on the player to detect a separate subtitle track or on the platform to keep your caption file attached.
The tradeoff is simple: once you burn the SRT subtitles into the video, you cannot turn them off or edit a typo inside the exported MP4. Fix the SRT first, preview it, then burn the final version.
An SRT file is plain text with numbered cues, start and end timestamps, and the subtitle lines that should appear during each time range. GrepCut reads those cues locally and draws the matching text over your video during export.
The tool supports standard SubRip .srt captions with plain text. HTML tags inside the SRT, such as `<i>`, are stripped automatically so the burn stays predictable.
ASS and SSA subtitle styling is not supported here. If your source subtitles depend on per-cue colors, karaoke effects, outlines, or complex positioning, convert or simplify them to plain SRT before you use this tool.
Can you burn an SRT file into an MP4 online?
Yes. Drop your video and your .srt file into GrepCut, preview the subtitles, then export a new MP4 with the SRT captions hardcoded into the frames.
Will your video or SRT file be uploaded?
No. Your video and subtitle file are read in your browser. Nothing is sent to a server, which is useful when your clip contains private meetings, drafts, client work, or unreleased content.
Can you customize how the SRT subtitles look?
Yes. You can preview and adjust position, size, font, and line wrap before export. Per-line colors, ASS/SSA effects, and advanced subtitle styling are not supported.
Why does burning subtitles take longer than adding a subtitle file?
Burning SRT subtitles changes the video itself. Your browser has to decode the video, draw the subtitle text on the right frames, and encode a new MP4.
Can you remove burned subtitles later?
Not cleanly. Burned subtitles are part of the exported image, so you should keep your original video and SRT file in case you need to edit or export again.
What if your captions are out of sync?
The timing comes from your SRT file. If captions appear too early or too late in the preview, fix the timestamps in the SRT or regenerate the subtitles in [GrepCut Studio](/) before burning.
Do you need an SRT file first?
Yes. This tool burns an existing .srt file into your video. If you only have a video, open it in [GrepCut Studio](/) to transcribe speech, edit the transcript, and export SRT.
Which browsers work best for burning SRT subtitles?
Use a WebCodecs-capable browser such as Chrome, Edge, or Opera. If your current browser cannot export, open the same files in a supported Chromium-based browser.