Video Format
Add Subtitles to MP4 Videos
Add subtitles to MP4 videos — the most common video format for social media and web.
Format Details
About MP4 Files
MP4
.mp4
Common Use
Social media, YouTube, web publishing, streaming
Why it works well for subtitles
- Universal compatibility across all devices and platforms
- Excellent compression with minimal quality loss (H.264/H.265)
- Supported by every video platform (YouTube, TikTok, Instagram, Vimeo)
- Ideal for burning in subtitles without re-encoding artifacts
Pro tip for MP4 files
MP4 with H.264 encoding gives the cleanest subtitle burn-in results. Export at the same bitrate as your source to avoid double-compression quality loss.
How It Works
Add Subtitles to MP4 in 3 Steps
1. Upload Your MP4
Drag and drop your .mp4 file into CutSnap. No conversion or pre-processing needed — CutSnap handles MP4 files natively.
2. AI Transcribes Audio
CutSnap's AI transcription extracts the audio from your MP4 file and generates accurate, word-level timestamped captions automatically — in over 50 languages.
3. Export with Captions Burned In
Style your subtitles in the live WYSIWYG editor, then export. Your captions are permanently burned into the video — guaranteed to display on every platform and device.
All Supported Formats
CutSnap Works with Every Major Video Format
Add Subtitles to Your MP4 Video — Free
No credit card required. Upload your file and get accurate captions in minutes.