Add Subtitles to Video
Attach an SRT caption file as a selectable subtitle track in a compatible MP4.
The FFmpeg engine downloads from a CDN once. Your media is not uploaded.
How to use the add subtitles to video tool
- STEP 1Choose a video up to 200 MB.
- STEP 2Choose an SRT caption file up to 2 MB.
- STEP 3Create and download the subtitled MP4.
About this tool
Combine common video formats with timed SRT captions while keeping subtitles switchable in compatible MP4 players.
Video becomes H.264 and audio becomes AAC for predictable compatibility.
The SRT becomes an English-labeled mov_text subtitle stream rather than permanent pixels.
Frequently asked questions
Are subtitles burned into the picture?
No. They are stored as a selectable mov_text subtitle track, so compatible players can turn captions on or off.
Which subtitle format is accepted?
Upload a valid UTF-8 SRT file up to 2 MB with correctly numbered timestamp blocks.
Will styling be preserved?
Basic text and timing are retained, but advanced SRT styling is not guaranteed in the MP4 mov_text format.