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How to Add Subtitles SRT to MP4 Files Successfully?

MP4 Subtitle Adder - Nice Guide to Add Subs ASS/SRT/ SSA/SUB/IDX to MP4 Files for Enjoying

November 14th, 2013 by

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Movies or videos in MP4 are universal nowadays. We can easily watch movies or videos online. However, we may meet language trouble due to the differences of languages. In this case, subtitles of the native language will be badly needed. If there are no subtitles of the videos, how to add subtitles to MP4 files? The following article will introduce a nice MP4 Subtitle Adder as well as a step by step guide to add subs to MP4 files.

How to Add Subtitles to MP4 Files with MP4 Subtitle Adder?

Bigasoft Total Video Converter is the professional MP4 Subtitle Adder that can easily add various subs in in .srt, .ass, .ssa, .idx, .sub and etc. to MP4 files. In addition, it can also support adding subtitles to many other video formats including MKV, AVI, MPG, WMV, MOV, 3GP, VOB, FLV, MXF, AVCHD, VOB and etc.

Besides acting as the MP4 Subtitle Adder, Total Video Converter is a powerful video converter and video downloader. It can convert more than 150 video and audio formats with superb quality. It can also help download videos from popular video sharing sites like YouTube.

What is more, it is a good video editing tool that can trim videos, crop videos, add watermark to videos, merge or join videos together, split videos by chapters, adjust audio channels, and remove black bars and more.

Detailed Guide on How to Add SRT/SSA/ASS/SUB/IDX to MP4 Files or Add Other Subtitles with MP4 Subtitle Adder?

The following will provide one nice solution about adding subtitles to mp4 files.

The guide will help:

  • Add subtitle .srt to MP4 files.
  • Add subtitle .ass to MP4 files.
  • Add subtitle .ssa to MP4 video files.
  • Add subtitle .idx to MP4 movie file.
  • Add subtitle .sub to MP4 files.
  • Add subtitles to other video formats.

Preparation: Free Download Bigasoft Total Video Converter to Add Subtitles to MP4 Files

Free download MP4 Subtitle Adder - Bigasoft Total Video Converter (For Windows, For Mac) to your computer. Install and run it.

free download windowsfree download mac

Step 1 Import MP4 Files to Subtitle Adding Software

Method One: Drag and drop MP4 files to the interface of the software.

Method Two: Click the "Add File" button to load the MP4 files.

Add Subtitles to MP4 - Add SRT to MP4 or Add Subs ASS/SSA/SUB to MP4

Step 2 Add Subs SRT/SUB/SSA/ASS/IDX to MP4

Add and edit subtitle file:

1. Go to the "Effect" button, the Video Edit window will pop up.

2. In the Video Edit window, click the "Subtitle" tab to switch to "Subtitle" pane.

3. Click the "+" button to import the .srt subtitle file or other subs files to MP4 videos.

4. When the subtitle is loaded, you can preview it on the right preview window. Click "OK" when you finish it.

How to Add Subtitles SRT/SSA/ASS/SUB/IDX to MP4 Files with MP4 Subtitle Adder?


You can also join videos together, cut off videos, and add watermarks and more in "Effect" button.

If you want to increase audio volume, adjust audio channel, remove black bars and more, go to the "Setting..." button to adjust them.

Step 3 Set the Output Format

If you want to keep MP4 as the output format, choose MP4 in "Profile" button.

If you prefer to put the files to iPad, iPhone, Apple TV or other devices, choose MP4 from "iPad", "iPhone", "Apple TV" and more in "Profile" button.

To change MP4 to other formats, choose the formats you want in "Profile".

Step 4 Finish Adding Subtitles to MP4 Files

Click the "Convert" button to begin to add subs to MP4. The subtitles will automatically appear when the conversion is finished.


Adding subtitles to MP4 files with MP4 Subtitles Adder is quite easy. Free download it to add subs to MP4 for enjoying on any devices or any places freely. Get it to start right now.


FREE Download and Start Enjoying Now (20.15MB)
Learn more about Bigasoft Total Video Converter ...

Got a Mac? Free download your copy here (49.86MB)
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