How to Add Subtitles to Video
Add subtitles to your video by syncing an SRT file in an editor and exporting it either as a separate caption file for easy translation or as a permanently burned-in video.
● Repair corrupted or unplayable source footage using Wondershare Repairit before beginning subtitle work to guarantee accurate timestamp synchronization.
● Fix incorrect text characters by saving the subtitle file with UTF-8 encoding, and resolve early playback by shifting all caption timestamps simultaneously.
● Keep text lines short and test visibility on a mobile screen, noting that burned-in subtitles cannot be turned off and require a full video re-export to edit.
Ask AI for a summary
Subtitles can be added as a separate caption file or burned directly into the video. Separate SRT files are easier to edit and translate, while burned-in subtitles appear everywhere but cannot be turned off. Accurate timing, readable styling, and final playback checks are essential.
Steps
- Step 1
Create or obtain a subtitle file in a format such as SRT, using matching text and timestamps.
- Step 2
Import the video and subtitle file into a subtitle editor or video editing application.
- Step 3
Adjust timing so each caption appears shortly before speech begins and disappears after the line ends.
- Step 4
Choose readable font size, contrast, and safe placement away from important visuals.
- Step 5
Export either a separate caption file with the video or a burned-in video depending on platform requirements.
Common Issues and Fixes
- Subtitles appear too early: timestamps are offset from the video start; shift all captions by the needed time amount.
- Characters display incorrectly: the subtitle file encoding is wrong; save the SRT file as UTF-8.
- Captions are cut off: text is too long or placed outside safe margins; split lines and adjust position.
- Platform ignores subtitles: file name, format, or upload pairing is unsupported; follow the platform's caption requirements.
Quick Tips
- Keep subtitle lines short so they can be read without covering too much video.
- Use consistent speaker labels only when they improve clarity.
- Check captions on a phone-sized screen because small displays reveal readability issues.
- Burned-in subtitles are reliable for playback but require re-export for every text change.
- Repairit is relevant when the source video is corrupted, damaged, unplayable, or cannot open before editing or conversion.
💡 Protip:
Repair unplayable or corrupted source footage before subtitle timing work so captions can be synced accurately.

If a source video becomes corrupted, damaged, unplayable, or fails to open before this workflow, Wondershare Repairit can help repair supported video files before conversion, compression, merging, cropping, rotation, subtitle work, GIF creation, or trimming.
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