Video Subtitle Burner - Hardcode SRT into Video

Burn subtitles permanently into videos. Upload SRT, ASS, or VTT files, customize font, color, position. Browser-based processing.

1. Upload Video

Drop video file here or click to browse

Supports MP4, WebM, MOV

2. Upload Subtitle File

Drop subtitle file here or click to browse

Supports SRT, ASS, SSA, VTT

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Frequently Asked Questions

Burning subtitles (also called hardcoding or hardsubbing) means permanently embedding subtitle text directly into the video frames. Unlike soft subtitles that can be turned on/off, burned subtitles become part of the video image and cannot be removed or disabled. This ensures subtitles display on any device or player, regardless of subtitle support.

Soft subtitles are separate files (like .srt) that players overlay on video and can be toggled on/off or styled differently. Hard subtitles are burned directly into the video pixels, making them permanent and unchangeable. Soft subs are better for flexibility (multiple languages, accessibility options), while hard subs guarantee visibility on all platforms including social media and devices with poor subtitle support.

This tool supports SRT (SubRip), ASS/SSA (Advanced SubStation Alpha), and VTT (WebVTT) subtitle files. SRT is the most common format with simple text and timestamps. ASS/SSA includes advanced styling like colors, fonts, and positioning. VTT is used for web video (HTML5). All formats will be rendered with your chosen font size, color, and position settings.

Burned subtitles are essential when: uploading to social media platforms (Instagram, TikTok, Twitter) that don't support soft subs, sharing videos with users who can't enable subtitles, creating promotional videos that must display text, ensuring accessibility across all devices, or distributing content where subtitle files might get lost or not load properly.

Yes, you can customize font size (small, medium, large), font color (white, yellow, black, or custom), and position (bottom, top). These settings override any styling in ASS/SSA files. White text with black outline is most readable on varied backgrounds. Bottom positioning is standard, but top positioning works for videos with lower-third graphics or when bottom text would obscure important visual content.

Burning subtitles requires re-encoding the video, which can affect quality depending on output settings. This browser-based tool uses modern codecs to minimize quality loss. The subtitle text itself is rendered at high quality. To preserve maximum quality, ensure your output resolution matches your input resolution and use higher quality/bitrate settings if available.

The tool uses timestamps from your subtitle file (SRT, ASS, VTT) to determine exactly when each subtitle appears and disappears. These timings are preserved during the burn-in process. If your subtitle file has incorrect timings, you should fix them in a subtitle editor before burning them in, as burned subtitles cannot be re-timed later without re-encoding the entire video.

Yes, the tool provides a preview player that overlays your subtitles on the video using your selected font size, color, and position. This lets you verify timing, readability, and appearance before committing to the permanent burn-in process. Preview uses soft subtitle rendering, so you can adjust settings and re-preview until satisfied.

This tool supports common web video formats including MP4 (H.264), WebM, and MOV. MP4 is recommended for best compatibility. The output video will be in MP4 format with H.264 codec, which plays on virtually all devices and platforms. Large videos may take several minutes to process as each frame must be re-rendered with subtitle text.

Once burned in, subtitles cannot be removed, edited, repositioned, or translated without re-processing the original video. You cannot switch between languages or disable subtitles. File size may increase due to re-encoding. Processing is CPU-intensive and may be slow for long videos. For maximum flexibility, keep an original copy without burned subtitles alongside your hardsubbed version.

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