Free Online Subtitle Burner
Hardcode SRT or VTT subtitles into any video so they show on every player and platform. Runs entirely in your browser — no upload, no watermark. Free to start; a free account unlocks unlimited daily burns.
Getting the upload area ready…
This only takes a moment
Burn Subtitles Into Your Video
Upload a video, drop in your SRT or VTT subtitle file, and download the MP4 with captions baked in.
Drop your video here
or click to browse files
Supports MP4, MOV, MKV, AVI, WebM
Features
Permanent Captions Everywhere
Hardcode SRT or VTT subtitles directly into the video frames so they play back on every device, app, and social platform — no separate file, no player support needed.
SRT & VTT Support
Drop the two most common subtitle formats — SubRip (.srt) or WebVTT (.vtt) — and SubFuse renders them straight into the video.
Plays on Every Platform
Burned-in captions show on Instagram, TikTok, YouTube Shorts, WeChat, and any silent autoplay feed where soft subtitles are ignored.
Pick the Right Font Size
Choose Small, Medium, or Large to match your video's resolution and viewing context — perfect for both phones and desktop.
Quality Preserved
High-quality H.264 re-encoding keeps the picture sharp while audio is copied through untouched. Subtitles are rendered as crisp, pixel-perfect overlays.
H.264 Veryfast Preset
Re-encodes with CRF 23 so output is visually indistinguishable from the source — even fine details and gradients survive.
Audio Passed Through
The original audio track is copied without re-encoding — identical sound, zero loss.
Faststart MP4
Output MP4 has the moov atom at the front, so it starts playing instantly when shared online.
100% Private & Free
Your video and subtitle file never leave your device — everything runs locally in your browser tab.
Zero Server Upload
Files are read, processed, and written back entirely on your own machine. No cloud, no database, no logs.
No Watermark
The exported video is clean — no logo, no stamp, no branding overlay.
Works Everywhere
Any modern browser — desktop or mobile. Chrome, Firefox, Safari, Edge.
Loved by creators, students & researchers
Why people use BibiGPT to turn videos into text every day.
Trusted by 50,000+ users worldwide
“I paste a link and get clean captions in seconds — it saves me hours of retyping every single week.”
Maya R.
Content Creator · Repurposes short videos
“Exporting the transcript lets me review new words at my own pace instead of pausing the video constantly.”
Daniel K.
Language Learner · Studies with real videos
“Accurate, timestamped text I can quote directly. It has quietly become part of my daily workflow.”
Priya S.
Researcher · Cites public talks
FAQ'S
Frequently Asked Questions
Ask us anything!
Popular guides
1 Bilibili AI Video Summary Tool: BibiGPT Summarizes 30+ Platforms Instantly (2026)
Best Bilibili AI video summary tool 2026? Paste a link for a free AI recap, mind map, and transcript-style takeaways on 30+ platforms — no login needed.
2 How to Install Skills in DeepSeek Harness: A Hands-On Guide to Teaching dsh to Watch Videos
Install a video-summary skill into DeepSeek Harness in one copy-paste — SKILL.md matches Claude Code. Or skip dsh: paste a Bilibili or YouTube link in the browser and get a timestamped summary.
3 How to Reverse a Video Without an App — Free, In-Browser, No Download (2026)
Reverse any video free with no app and no download, right in your browser. Step-by-step for iPhone, Android, and PC, plus how to reverse audio (2026).
No Subtitle File Yet? Create One Free
This tool burns in subtitles you already have. No file yet — or need it in another language? Sign up free and let BibiGPT auto-generate and translate accurate captions from any video, then burn them in here. Plus AI summaries, transcripts, and mind maps.