Add Captions to a World Cup Reaction Video — Free
Most feeds autoplay on mute, so your World Cup reaction needs on-screen text. This guide burns captions straight into the pixels so the joke and the call land even with the sound off.
Step-by-step
Capture and trim the reaction
Use the Screen Recorder to grab the match feed plus your webcam, then open the Video Trimmer and keep only the best 15-45 seconds — the gasp, the celebration, the hot take.
Prepare an SRT caption file
Write or auto-generate captions and export them as SRT or VTT. Keep lines short (2-4 words for reactions) so the burned text stays readable in a vertical feed.
Burn captions in
Open the Subtitle Burner, drop in the trimmed clip and the SRT, set a 32-40px font with a bold outline in the lower third, and export. The captions become permanent pixels that survive any re-share.
Recommended settings
| Subtitle inputs | SRT, VTT, ASS |
|---|---|
| Recommended font size | 32-40 px for 1080p |
| Caption position | Lower third with outline / shadow |
| Best duration | 15-45 seconds |
| Codec / format | H.264 + AAC in MP4 |
Quality check before publishing
- Play the first and last three seconds to catch bad trims, black frames, missing audio, or a visible jump at the end.
- Confirm the exported file matches the important settings above, especially duration, aspect ratio, resolution, codec, and file size.
- Preview once on the target platform or device before deleting the original source file.
- If the clip will be reposted publicly, strip metadata first and verify no private names, GPS data, or device fingerprints remain.
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FAQ
Why burn captions instead of using the platform's auto-captions?
Auto-captions disappear when a clip is downloaded, DM'd, or cross-posted, and they often mis-hear player names. Burned-in captions are part of the video, so they travel everywhere and stay accurate.
Where should the captions sit in a vertical clip?
Keep them in the lower third but above the platform's UI buttons. The Subtitle Burner lets you reposition the line and add an outline so text stays legible over a bright pitch.
Does this run in my browser?
Yes — every step in this guide uses an in-browser FFmpeg WebAssembly tool. Your video never uploads to a server and never leaves your device.