Bookmark this webpage

Mp4 subtitle generator

Add subtitles to the video with srt file or manual captions

Upload File
googledrive dropbox
or
drag and drop here
Cancel

Are you sure you want to cancel processing?
you will lose your progress

Yes
No
download-icon
Thanks for your patience
Download
Add Subtitles to Your Video

Multiple Ways to Upload a Video
Multiple Ways to Upload a Video

Upload an MP4 directly from your device, drag and drop it into the tool, or import it through Google Drive or Dropbox. This makes it easier to work with videos regardless of where they are stored.

Manual Subtitle Creation
Manual Subtitle Creation

Create captions directly inside the tool when you do not have a prepared subtitle file. Enter the text, set its start and end time, and add as many separate subtitle entries as needed.

SRT Subtitle Import
SRT Subtitle Import

If you have subtitles prepared in an SRT file, then upload the file instead of entering every caption manually. An SRT file stores subtitle text together with timing information, making it useful for videos that already have a prepared caption track.

Precise Subtitle Timing
Precise Subtitle Timing

Set when each subtitle begins and ends using hour, minute, and second fields. This helps synchronize captions with dialogue, narration, instructions, or other moments in the video.

Subtitle Style Customization
Subtitle Style Customization

Change the font, font size, text color, background color, and alignment to create captions that are easier to read and better suited to the video.

Add or Remove Subtitle Entries
Add or Remove Subtitle Entries

Your subtitle list can be adjusted as you work. Add new entries when another caption is needed and delete entries that are incorrect, duplicated, or no longer relevant. Click the Export button to save the video with subtitles.

idea

Steps to Add Subtitles to an MP4 Video

1 . Upload your MP4 video to add subtitles.
2 . Create subtitles manually or use an existing `.SRT` file.
3 . Set its start and end time using the available time fields.
4 . Choose a suitable font style and size.
5 . Select the text color and a background color for the subtitle text.
6 . Review the subtitle wording and timing.
7 . Once the subtitles and their appearance are ready, click Export.
8 . The tool processes the video with the added subtitles.

Other useful information

Explore our visual guides and infographics

×
Infographic Preview

Frequently Asked Questions


Why are my subtitles not matching the speech?

Check the start and end times of the affected subtitle entry and adjust them to match the spoken words. Even a small timing difference can make captions appear noticeably early or late.

What should I do if a subtitle disappears before the sentence finishes?

Extend the subtitle's end time so it remains visible until the corresponding speech is complete. Preview the result again to make sure the timing feels natural.

Why does a subtitle appear before the person starts speaking?

The subtitle's start time may be set too early. Move the start time forward until the caption appears when the dialogue begins.

What if two subtitle entries appear at the same time?

Check the start and end times of both entries for an unintended overlap. Adjust the timing so each caption appears during its intended section of the video.

What should I do if I accidentally create a duplicate subtitle?

Remove the duplicate entry from the subtitle list before exporting. Keeping only the required entries helps prevent repeated captions from appearing in the finished video.

Why is my subtitle text difficult to read against the video?

The text may not have enough contrast with the background behind it. Adjust the text color, background color, font, or size to make the caption easier to see.

What if the subtitle font is too small?

Increase the font size so the text remains readable at normal viewing size. Avoid making it unnecessarily large if it covers important parts of the video.

What if the subtitle background covers too much of the video?

Reduce the visual impact by choosing a more suitable background color or adjusting the text size. The goal is to keep the subtitle readable without unnecessarily obstructing the underlying content.

Why does my subtitle look different from what I expected?

Check the selected font, size, text color, background color, and alignment before exporting. These appearance settings determine how the captions are rendered in the final video.

What happens if I leave a subtitle entry with incorrect wording?

The incorrect text will be included when the video is exported. Review each entry and correct spelling, punctuation, names, or other wording before processing.

What should I check before exporting an SRT-based subtitle track?

Review the imported subtitle text and timing to make sure they correspond correctly with the video. An SRT can contain incorrect wording or timing even when the file itself uploads successfully.

Why are my imported SRT subtitles out of sync?

The timing information stored in the SRT may not match the particular version of your video. Check the subtitle timings and make adjustments where the captions do not align with the dialogue.

What if my video and SRT file are from different versions?

Their duration or dialogue timing may not match, causing captions to appear at the wrong moments. Use the subtitle timing controls to correct entries that no longer align with the uploaded MP4.

What should I do if I notice a missing caption?

Add a new subtitle entry and enter the missing text with its appropriate start and end time. Then review the surrounding entries to ensure the new caption fits correctly into the sequence.

What should I check if subtitles are readable but cover important video content?

Review the subtitle alignment, font size, and background settings to find a better presentation. A smaller or differently aligned caption may leave more of the underlying video visible.

Why does exporting take some time?

The tool needs to process the MP4 and render the subtitle layer into the video. Processing time can vary depending on the video being handled.

What information does an SRT file contain?

An SRT file generally contains a subtitle number, the time range when the caption should appear, and the subtitle text. These timing details tell the tool when each caption should be displayed over the video.

How do I resize videos for Instagram?

Use the Resize for Instagram tool to format your videos according to Instagram’s specifications for posts, stories, or reels.

How can I split a video into a 16:9 aspect ratio?

The Split Video 16:9 tool helps split videos while maintaining the 16:9 aspect ratio, suitable for widescreen displays.

Our USPs

Security 100% (No files are sent to server for processing)
File size limits None (No limit on size of files)
Usage limits None (Process as many files as you want)
Price Free
User Information Captured None (We do not request for user information such as email / phone number)
Ads None (We provide complete ad free experience)

Over 200k Users Rely on Our Video Editing Tools Monthly

Join a growing community of users who rely on SafeVideoKit.com for secure, efficient, and easy-to-use video editing and processing tools. Enjoy privacy-focused features with no data uploads required.

×
Share on social media to continue using this website
rating-img

Rate this tool

Your feedback helps us improve our services

5.00/5   6 votes

About The Author

Harsh Kumar

Hey there! I'm Harsh Kumar, a dedicated technology enthusiast with a strong passion for music and anime. I tackle challenges head-on and consistently strive for excellence. In my past time, you can find me indulging in my favorite tunes or exploring captivating anime worlds.

Contributors