Captions as video
Your subtitles, rendered as MP4.
SRT to MP4 Converter
Render subtitle text as a silent MP4 video.
- Convert SRT to MP4 online
- A silent caption video
- Free — no signup
Add your SRT file
Create a silent caption video.
Your original file stays unchanged. No signup required.
Black or white backdrop
Pick the background for your text.
Up to 500 subtitles
A two-minute caption video.
Silent video
No audio track — captions only.
Frequently asked questions
What does this tool actually make?
A brand-new silent MP4 that shows your subtitle text on a solid black or white background — a caption video made from the SRT file alone. It does not add subtitles to an existing video, and no audio is included.
Does it work in every browser?
No. Rendering needs a browser that can encode H.264 video (WebCodecs) on a secure (HTTPS) page — in practice, an updated Chrome or Edge. The tool tests your browser when you press Render; if it cannot encode at the chosen size it stops with a clear message (choosing 480p may help).
Is it free, and are there limits?
Yes — free, with no signup. The video is limited to 500 subtitles and a 2-minute timeline, at 480p or 720p.