MSRX Tools

Add Text to Video

Burn a caption, title or credit into every frame.

Everything runs inside your browser. Your files never leave your device.

Drop your file here

.mp4, .m4v, .mov, .qt, .webm, .mkv, .ts, .mts, .m2ts · they stay on this device

Ask about Add Text to Video

Questions about what this tool does, which option to pick, or what it can and cannot handle.

This is the one part of the site that uses a server. The question you type here is sent to an AI provider to be answered — your files and whatever you put in the tool above are not, and the assistant cannot see them. Answers are generated and can be wrong; the tool itself is not guessing.

About the Add Text to Video

Text drawn into a video is permanent in a way that a caption file is not. A subtitle track can be switched off, ignored by a player, or stripped when a platform re-encodes the file. Words burned into the frames are part of the picture, and they arrive wherever the video arrives.

That is exactly what you want for a title on a clip, a name and role under somebody speaking, a date on footage that will be referred to later, a credit, a watermark made of words, or a warning that has to be seen. It is exactly what you do not want for translated dialogue, where a viewer needs the option to turn it off and where a real subtitle file is the correct answer.

The size is given as a percentage of the frame height rather than in points, and that is deliberate: six per cent of the height looks the same on a 4K master and on the 480p copy somebody shares afterwards, whereas a fixed point size would be unreadable on one and enormous on the other. Nine anchor positions cover the placements that come up in practice, with a margin control to keep the text clear of the edge — where phone interfaces, platform overlays and rounded corners tend to eat it.

The shadow is on by default, and it earns its place. White text is unreadable over a bright frame and black text disappears into a dark one, and a video's frames are not one colour — they change constantly. A soft shadow behind the letters costs nothing and keeps them legible over both, which is why every broadcaster does it.

Line breaks in the box become line breaks on screen, so a two-line title is typed as two lines.

How to use it

  1. 1Add the video.
  2. 2Type the words. Press return for a second line.
  3. 3Choose where they sit and how large they are relative to the frame.
  4. 4Run it, then watch the result over the busiest part of the footage to check it reads.

Questions

Can I remove the text later?
No. It becomes part of the picture, which is the whole point. Keep the original file if you might want a version without it.
Can the text appear only for part of the clip?
Not in one pass. Trim the section, add text to that piece, and join the film back together.
Why is the size a percentage?
So the text stays proportionate whatever the resolution. A fixed size would be tiny on 4K footage and overwhelming on a small copy of it.
Should I use this for subtitles?
Only if they must be unremovable. For ordinary translated dialogue a proper subtitle file is better, because the viewer can turn it off.