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How to Add SRT to MP4 Online Free

by Christine Smith • 2024-01-11 10:29:10 • Proven solutions

Subtitles are an important part of videos as they help in better understanding of the content and especially when they are in a foreign language. So, if you have downloaded videos that do not have subtitles, no worries as several online and other tools help in adding subtitles SRT files to MP4 videos. Learn about the popular tools to add SRT to MP4 online in the following parts.

Part 1. 3 Online free ways to embed SRT into MP4

Online tools are handy and pocket-friendly at the same time. So, if you are searching for one such tool to embed SRT into MP4, check out the below-given options.


One of the best online tools for all types of video-related tasks is Veed and adding SRT to MP4 file is no exception. Using the program, you can add the locally saved MP4 file or can import it from your Dropbox account. The option for recording the video and adding a YouTube link is also there. The tool gives you the option to add the SRT, VTT, and SXT subtitle files. The option for adding manual subtitles and looking for them online is also there. The processed files can be saved to the local system and have a watermark.


Steps to add subtitles to MP4 online using

Step 1. Open and click on the Choose File button. Choose to upload the file from the device, dropbox, using a link, or by recording.

Step 2. After the video is added, click on the Upload Subtitle File button. Select the language from the new window and then tap on the Import Subtitles button to add the locally saved SRT file.

Step 3. Finally, press the Export button at the top-right corner and the tool will start adding the SRT file to your added MP4 video.

2. Happyscribe

This is another straightforward online tool to add SRT files to your MP4 videos. The tool also has an option to autogenerate the subtitles if needed. The interface is user-friendly and the process is quick. The videos with added subtitles can be downloaded and saved to the local system.


Steps to add SRT using Happyscribe:

Step 1. Launch on your browser window.

Step 2. Click on the Select File button to browse and import the MP4 video. Under the SRT tab, add the subtitle file.

Step 3. Click on the Add Subtitles button and the program will start uploading and processing the file.

3. Clideo

Using Clideo the MP4 videos to which subtitles have to be added can be browsed from your local system, Google Drive, and Dropbox. The tool allows to add the SRT file saved to the system, manually add the subtitles, and also search for them automatically.


Step 1. Open and click on the Choose File button to add MP4 video.

Step 2. After the file is uploaded to the program click on the Upload SRT button.

Step 3. The tool will process and add the SRT files to the added video which can then be downloaded to the local system.

Part 2. How to add .srt file to .mp4 or auto-generated subtitles on Windows 10/8/7 / Mac

On your Windows and Mac systems, SRT files can be added to MP4 videos quickly and effortlessly using Wondershare UniConverter. Not only MP4, but the software also supports all other key video formats like MOV, AVI, and many others. Besides adding the SRT files, the software also allows to automatically search for the subtitles or add them manually.

Several options for customizing the subtitles are also there like changing the font, position, opacity, and outline width. With batch processing support, multiple files can be processed at a time.

  • Add subtitles automatically, manually, or by adding SRT files to the video
  • Multiple options for subtitle customization like font, size, position change
  • Batch processing support
  • Multiple file formats like MP4, MOV, AVI, and all other key ones supported
  • A list of auto-generated subtitles can be saved
  • Support for all latest Windows and Mac OS

Steps to add SRT files to MP4 manually or generate SRT from videos automatically using Wondershare UniConverter:

Step 1 Choose Wondershare Subtitle Editor

Open the Wondershare UniConverter software and choose the Toolbox tab from the main interface. Choose the Subtitle Editor option from the right-side pane.

Choose Wondershare Subtitle Editor

Step 2 Add MP4 video(s) to this Subtitle Editor

Click on the Add Video button or the + sign to browse and add the MP4 file from your system. Remember, the option for dragging the video is also there.

 Add MP4 video(s) to this Subtitle Editor

Step 3 Choose to import the SRT files or generate subtitles automatically

Under the added video choose to import the locally saved SRT file or generate subtitles automatically by tapping on Import or Auto-Subtitle Generator tabs respectively.

 Choose to import the SRT files

If you have added a local SRT file, it will be saved to the Subtitle List.

Add SRT to MP4

If you choose to add the subtitles automatically, a pop-up window will open where you need to choose the video language and then click on Start Now button.

generate subtitles automatically

The software will start looking for the subtitles online and when done, choose to Open the generated SRT file or add the SRT files to your video by clicking the Import Subtitle button.

Open or add SRT to video

Step 4 Export video with subtitles

The folder path on your system to save the processed file can be selected at the File Location tab. Finally, click on the Export button and choose the file type from MP4, SRT and USE to start processing the file.

Export video with subtitles

Part 3. FAQs of adding .srt file to .mp4

1. Can I add .srt to .mp4 permanently with VLC?

Yes, VLC has a feature that allows you to add and embed SRT into MP4 videos permanently, but the function is very slow and complicated. A simple alternative to the same is by adding the subtitles to VLC and then playing it along with the video. One thing is to be remembered here that this way the subtitles will be available only while playing the video.

2. How to add subtitles to a movie to play on PS3?

If you wish to play a movie with subtitles on your PS3 then you first need to add the subtitles to the desired movie and then convert it to PS3 compatible format. The best tool to get this task done is Wondershare UniConverter that will let you add the SRT files to your videos and will then convert them to PS3 compatible format. The function on the software can be used from the Video Editor > Subtitle.

3. Can I play a movie with subtitles without .srt file embedded?

Yes, using Wondershare UniConverter you can play a movie with subtitles without embedding SRT files permanently. The built-in player of the software has a feature where you can activate or deactivate the subtitle function as needed. When activated, the subtitle that you wish to play can be selected from the added list.


So, if your videos do not have subtitles embedded in them, they can be added externally by importing SRT files. Online tools can be used for the task, but for accuracy and multiple features Wondershare UniConverter is the best choice. The software has a user-friendly interface and the file processing is very fast.

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Christine Smith

Christine Smith

chief Editor

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