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What Does It Mean to Burn In Captions? Definition
To burn in captions means to permanently render the caption text into the video pixels during the export process, making them part of the image itself.
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By Sumit DeyUpdated
Burn-in (Captions), Explained
Burning in captions is the process of permanently rendering caption text into the pixels of a video file during the export stage. Once burned in, the captions cannot be turned off, restyled, or replaced, they are visually part of every frame. Captioning tools burn in captions by compositing the rendered text on top of each video frame and then re-encoding the result as a new MP4 (or other format). Burn-in is the default for short-form social platforms (TikTok, Reels, Shorts) because these platforms do not support toggleable caption tracks. Burn-in is also required when you want the captions to appear identically across all viewing contexts, for ads, presentations, and reposts. The alternative is soft subtitles delivered as a separate SRT or VTT file, which the viewer's player overlays at playback.
Burn-in (Captions) Examples
- Exporting a captioned MP4 from VideoCaptions.AI ready to upload to TikTok.
- Using ffmpeg to burn an SRT file into a video as hardsubs.
Terms Related to Burn-in (Captions)
Burn-in (Captions), answered
What does burn in mean for subtitles?
Burning in means drawing the subtitles onto the video frames, so the text becomes part of the picture. The exported video then shows the subtitles everywhere, without needing a separate subtitle file.
How do I burn subtitles into a video?
Use a caption tool that exports video, generate or import the subtitles, style them, and export an MP4. Desktop editors can also do it by placing the subtitle track on the timeline before you export.
Does burning in subtitles lower video quality?
Not noticeably if you export at the same or higher resolution than the original. The video is re-encoded during export, so choosing a lower resolution or bitrate is what actually reduces the quality.
When should I not burn in subtitles?
Skip burning in when viewers need to switch languages or turn subtitles off, such as long YouTube videos or films. Upload a separate SRT or VTT file for those instead, so viewers stay in control.
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Use Burn-in (Captions) in Your Videos
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