Add Text to Video

Add a title, a caption, a watermark-style credit, a price or a meme line to a video. Type the text, choose where it sits and how it looks — outline, background box or soft shadow, any colour — and, if you like, when it appears and whether it fades. The text is drawn with the fonts on your own device, so Korean, Japanese, Chinese, accented letters and emoji all render properly. The video is made in your browser with the ffmpeg engine (about 30 MB, downloaded the first time); nothing is uploaded.

How to use this tool

1. Type the text (press Enter for more lines).
2. Choose the position, size, font, colours and style, and optionally a time window and a fade.
3. Choose the video last; the result and a preview frame appear right away.
4. Check the preview frame, play the video and download it. Change a setting and press Calculate to redo it.

Formula

Text height = short side × size %; margin = short side × margin %

Sizes are measured on the picture's short side, so the same setting looks alike on landscape and vertical videos. Long lines wrap inside the margins. The text is drawn once onto a transparent picture the size of the video and laid over every frame while it is shown; with a fade, its transparency ramps over the chosen time at the start and the end. The video is re-encoded as H.264 (CRF 20 by default); AAC and MP3 sound is copied.

Example

On a 1080 × 1920 vertical video with size 8% and margin 5%, the text is 1080 × 0.08 ≈ 86 px tall and sits 54 px from the edges. Shown from 0:02 to 0:06 with a 0.5 s fade, it fades in from 0:02 to 0:02.5 and out from 0:05.5 to 0:06.