HomeAudio & Video StudioBurn & Mux Subtitles

Burn & Mux Subtitles

Video

Mux caption files (.srt or .vtt) into video container tracks instantly offline.

WASM Captions Burning Engine:Initializing...
100% Client-Side
Step 1: Choose Video File

Upload Video file

MP4, WEBM, MOV, MKV up to 250MB

Max file size: 250 MB
Files are processed entirely in your browser and never uploaded.

Subtitle Muxer Settings

This tool embeds the uploaded SRT/VTT file as a soft subtitle track directly inside your video container. Soft subtitles can be toggled on/off in media players (like VLC, QuickTime, iOS/Android players) and take only a few seconds to compile because the video track is kept intact without heavy re-encoding!

Soft vs. Hard burning: Soft captions maintain original pixel quality without degradation. To render captions permanently directly on top of pixels, use our timeline editor tool first.

How to use the Burn Subtitles

Follow these simple steps to process your files locally in seconds.

1

Select or upload your source video file.

2

Upload your companion subtitle file (.srt or .vtt).

3

Click Mux Subtitle Track to embed the captions into the container instantly.

4

Download your captioned video with native media toggle support.

100% Client-Side

All calculations run exclusively inside your browser. No files are ever sent to our servers.

Private & Secure

Your data remains entirely yours. Ideal for processing sensitive business or personal files safely.

No Limits, No Fees

No account registration, no file size limitations, and no watermarks added to final results.

Frequently Asked Questions

Got questions about using the Burn Subtitles? Find answers here.