video station
Burn Subtitles into Video Online
Render subtitles from a supplied SRT or VTT file directly into a video. The MP4 output shows the captions as part of the picture.
Active conversion station
Burn Subtitles
Hardcode subtitles
How to hardcode subtitles into video
Prepare the source
Select the video and add a matching SRT or VTT subtitle file.
Review the settings
Check the subtitle wording and timing before uploading.
Check the result
Start Conversion and review caption timing and readability in the MP4.
Supported formats and limitations
Input: MP4, AVI, MOV, MKV, WEBM. Output: MP4. Captions cannot be switched off once burned in. This workflow does not transcribe speech or translate subtitles.
Processing runs on the server after you select Start Conversion. The interface accepts files up to 500 MB; service and connection limits can be lower. No installation or account is required. Read our file processing privacy policy.
Why Use ConvertFast's Burn Subtitles?
- Use a prepared subtitle file for timed captions.
- Create captions that remain visible during playback.
Frequently Asked Questions
Does this generate subtitles automatically?
No. Supply a prepared SRT or VTT subtitle file that matches the video.
Can viewers disable the subtitles?
No. Hardcoded subtitles become part of the video image.
Ready? It's Free.
No account required. Input rules appear before you upload.
Open Burn Subtitles Tool