How to Add Subtitles to MP4 Videos on Mac and Windows

Wanna add a subtitle to your own recordings to create your own movie? Or add a subtitle to a foreign movie for understanding the movie better? It’s quite easy to do the subtitle task with iSkysoft iMedia Converter Deluxe. This article will introduce detailed guide to add subtitles to MP4 videos, keep reading to learn more.

Best Tool to Add Subtitles to MP4 Videos on Mac and Windows

At the very beginning of the task, something you need to know: not all videos can have subtitle, i.e, if you have some FLV videos, you are unable to attach external subtitles to the video. Those proper video formats for subtitle attachment are MP4, AVI, MKV etc. But with iSkysoft iMedia Converter Deluxe, the format limitation is nothing.

Best Video Converter - iSkysoft iMedia Converter Deluxe

More Features of iSkysoft iMedia Converter Deluxe:

  • Convert videos between 150+ video and audio formats at 90X faster speed, such as MP4, MOV, WMV, MKV, AVI, FLV, VOB, etc.
  • Add subtitles (.srt, .ass and .ssa) or watermarks and special effects or other features to your videos before converting them.
  • Download or record videos from 1,000+ popular online video websites like YouTube, Vimeo, Vevo, Hulu, etc.
  • Transfer your converted video to your mobile devices like iPhone, iPad, iPod or Android Phones and tablets to watch on the go.
  • Provide with a set of handy tools to make GIF, convert VR, cast video to TV, record screen, etc.
  • Easily burn videos to DVD, copy DVD files as a backup.
  • Perfectly compatible with all macOS and Windows OS, including the latest macOS 10.12 Sierra and Windows 10.

User Gudie to Add Subtitles to MP4 with iSkysoft

Step 1. Import the source MP4 files to the Video Converter

To add the source videos, you can drag & drop your files directly to the MP4 converter, or head to "Add Files" button to load MP4 video files. If you want to add subtitles to the MP4 video in your iPhone, Android Phones or other mobile devices, click the drop-down icon beside to directly import from mobile devices.

Note: If you have some videos in FLV, 3GP, AVCHD or other formats which don't support subtitle attaching, you can also use the Mac and Windows Video Converter to add subtitles to the video.

add subtitles to video

Step 2. Add subtitle to MP4 video

After importing MP4 video to the converter, you will see three small icon under the thumbnail of the video on the video info bar, click the second or third one to open a pop up window, from where you can turn to the Subtitle tab and add subtitles in .srt, .ass and .ssa to the videos.

add subtitles to mp4

Step 3. Choose the output format

You can keep MP4 as your output format or choose other formats. The default output format set by the MP4 converter is iPhone MP4, if you wanna a change, open the format list by clicking the format icon on the video info bar and customize the output format. There are some optimized presets for popular devices and apps like iPhone 7/7 Plus, iPad Pro, iPod, iMovie, HTC, Sony PSP and more, if you wanna choose your mobile model directly, turn to the Device tab.

subtitles mp4 mac

Step 4. Start the subtitle task

Now return to the main interface and hit on "Convert" in the video display bar or "Convert All" at the right bottom of the main interface of the video converter, and the rest will be finished automatically.

how to add subtitles to mp4 video

Tip 1: What are the subtitle files(.srt, .ass and .ssa)?

Do you want to add a subtitle to your MP4 video file? If you are looking for a hassle-free solution then you have come in the right spot. You just need to acquire some good tips and the right software. First of all let us give you an overview about each of its relevant subtitle file extensions.

SRT- This files is commonly known as SubRip. It is a software program for windows which extracts (rips) subtitles from MP4 videos and includes the time of each subtitle followed by the text of its subtitle. It is used by several video playback programs. It supports DivX, DVD and other video formats. It does not contain any video data.

SSA- Substation Alpha Subtitle file was developed by a developer named Kotus. It is a saved text format which can also be viewed in a text editor.

ASS- Aegisub Advanced Substation Alpha file (.ass) is a subtitle file created by Aegisub which is a cross-platform video typesetting application. It stores the subtitle by using the Advanced Substation Alpha syntax which is mainly used for storing edited movie subtitles of MP4 videos.

Tip 2: How to create SRT, SSA, and ASS files?

SRT file format is a commonly used subtitle format as it supports wide range of media players. It does not contain any video format as it is a text file for displaying the subtitle while streaming any video. Creating a srt file is simple and you don’t have to download any software for this purpose. You could simply use a notepad or text editor for this purpose. If you want to include any subtitle like .srt, .ssa or .ass just follow these simple steps.

Step 1: Open the Notepad > Click "Start" > Go to "All Programs" > Accessories > Notepad

Step 2: For creating an .srt file divide each subtitle phrase separately into sections by numbering them. Just type "1" and then click "Enter" to create the subtitle phrase.

Step 3: To display the subtitle phrase enter the Time span. If you want the subtitle phrase to be displayed from the third minute of the video then type "00:03:00 00:04:00" and then click "Enter".

Step 4: Now create the first subtitle phrase by typing the subtitle phrase and click "Enter".

Step 5: these steps in the same way by typing "2" for second subtitle, "3" for third subtitle and so on to create the subtitle phrase. Separate the subtitle phrase into numbered sections like this.

Step 6: After creating the entire subtitle phrase save the file in SRT format. Click "Start" > "Save". Then go to "Save as type" > select "All Files" from the drop down menu.

Step 7: Then type a file name in the "File name" field and type ".srt" > Click "Save".

iSkysoft Editor
Jul 19,2017 10:00 am / Posted by to Video Tips

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