Burn subtitles into your video — upload an MP4 and an SRT or VTT file and download a video with open captions baked in.
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MP4, MOV, M4V, WebM, MKV or AVI
Open captions, burned in permanently.
Need to make the subtitle file first? Use Auto Subtitle Generator or Video Transcription. Messy SRT? Clean it with the SRT Validator. Need a smaller file afterwards? Try the Video Compressor.
Upload a video and a subtitle file, then download an MP4 with the captions baked in
Open captions are burned into the video frames — they are part of the picture, always visible, and cannot be switched off. Closed captions are stored as a separate track or sidecar file (like an SRT or VTT) that the viewer can toggle on and off. This tool produces open, burned-in captions.
Use burned-in captions when you need the words to show no matter where the video plays — social feeds, embedded players, downloads, kiosks, or any platform that ignores or strips separate caption tracks. Use closed captions (keep your SRT/VTT alongside the original) when the destination supports them, such as a dedicated video host where viewers expect a toggle. Many producers ship both: the soft file for platforms that read it, and a burned-in version for everywhere else.
.srt or .vtt, you are ready. If not, generate one first with our Auto Subtitle Generator or Video Transcription tool, or write it by hand.Bring an SRT (SubRip) or WebVTT subtitle file and a video in MP4, MOV, M4V, WebM, MKV or AVI. The output is always an H.264/AAC MP4 — the format that plays everywhere — with the captions rendered into the picture.
Because the captions become part of the image, they cannot be edited or removed afterwards. Keep your original video file so you can re-caption it later if the script changes.
About 85% of social video is watched on mute, so on-screen captions are what hold a silent viewer's attention. Captions also make your content accessible to deaf and hard-of-hearing viewers and to anyone watching in a noisy or sound-sensitive environment — and burned-in captions guarantee that accessibility travels with the file wherever it goes.
Upload your video and an .srt or .vtt subtitle file, choose a caption size, and click Add Captions. The tool re-encodes the video with the captions burned permanently into the picture and gives you back an MP4 to download — no software to install and no watermark.
Burned-in (open) captions are rendered into the video frames, so they are always visible and cannot be turned off. Closed captions live in a separate track or file that the viewer can toggle. This tool produces open, burned-in captions — ideal for social platforms and anywhere a separate caption file might be ignored or stripped.
You can upload SRT (SubRip, .srt) or WebVTT (.vtt) subtitle files. The tool normalizes common quirks — BOM markers, Windows line endings, comma-or-dot millisecond separators and broken numbering — automatically before burning them in.
Generate one first. Our Auto Subtitle Generator creates timed captions from any video, and Video Transcription turns a video into text you can export as SRT or VTT. Once you have the file, come back here to burn it in.
Without an account you can caption a video up to 100MB and 5 minutes. A free account raises that to 200MB and 10 minutes. Captioning runs while you wait, so these limits keep the encode fast.
Yes. Choose Small, Medium or Large before you burn. All three render clean white captions with a black outline, centred near the bottom of the frame so they stay readable over any footage.
VoiceDeck adds AI-powered audio & video review and delivery for your whole team — so every file ships in spec, automatically.