How to transcribe videos and add subtitles? We explain the recommended method for converting mp4 files to text!

May 2, 2024

How to transcribe videos and add subtitles? We explain the recommended method for converting mp4 files to text! | AI character transcription service - Mr. Transcription
Adding subtitles to a video is hard work!
No problem, there's an easy way to edit it!

One of the most difficult tasks for video creators is adding subtitles and captions.

Typing in text and setting start and end times is usually more work than stitching together video footage and editing it .

But what if this subtitling process could be automated?

In fact, by using the latest AI technology , it is possible to automate even the most tedious subtitling-related tasks .

The process is simple; just upload the mp4 file you created for YouTube to the AI ​​transcription service.

Since you no longer have to do the most tedious tasks, you can cut the time it takes to edit videos in half or more .

In this article, we will explain the process of transcribing mp4 files for video sites such as YouTube into text and adding subtitles .

We will also explain the specific operating procedures for the two major video editing software programs, Adobe Premiere and DaVinci Resolve , so why not use this as a reference to add subtitles to your videos?

How to transcribe and subtitle videos (YouTube mp4 videos supported!)

For people who make videos for work or as a hobby, or for YouTubers, one of the most tedious tasks is adding subtitles.

In fact, it is possible to easily add subtitles by transcribing videos using the latest AI.

How to add subtitles to a video

How to add subtitles to a video

If you upload videos to video sites such as YouTube, you probably use video editing software such as Adobe Premiere or DaVinci Resolve to edit them.

In fact, both software programs support loading subtitle files such as "srt files" , so you can automatically add subtitles by simply loading the contents of a subtitle file without having to type in the subtitles by hand.

I didn't know this, so I've been adding subtitles by hand all this time...

Previous method (manual input)

Until now, it was necessary to add subtitle text manually like this.

How it worked so far

Every time I add a subtitle

  • Enter the subtitle text
  • Set start and end times

Because of all the steps required, the video took a very long time to edit.

The future way of working (using AI transcription services)

But from now on, that won't be necessary!

Simply load the AI-transcribed subtitle text and you can instantly add subtitles to your video from start to finish!

The future way of working

When it comes to video editing, adding subtitles and captions is a particularly time-consuming task.

Using AI transcription tools can cut your video editing time in half or more .

Why not try using an AI transcription tool to dramatically improve the efficiency of your video editing?

For video subtitle text transcription, use "Mr. Transcription"

Transcription Mr.

If you want to create subtitles, we recommend "Mr. Transcription"!

"Mr. Transcription" is a recommended AI transcription tool for creating subtitle text for videos.

By using the latest voice recognition AI, we can create high-quality subtitle text quickly.

Moreover, since you can directly upload and load video files , there is no need to take the trouble of creating audio files specifically for creating subtitles.

There are many file formats that can be uploaded.

  • .mp4
  • .mov
  • .avi
  • .flv
  • .mkv
  • .webm
  • .wmv
  • .3gp

As you can see, it supports all major video file formats.

It is possible to transcribe directly from mp4 videos for YouTube, or from mov files of video material shot on an iPhone.

In addition, it supports 100 languages ​​including Japanese and English (using the voice recognition AI "PerfectVoice").

Transcription in a foreign language → AI translation into Japanese to create subtitles

It can also be used like this.

Furthermore , you can use "Mr. Transcription" for free for up to one minute without registering or logging in!

Why not increase the number of views for your videos with Mr. Transcription, an AI transcription tool that addresses the needs of video editors?

How to create subtitle files from YouTube mp4 videos

From here, we will explain in detail the process of transcribing a subtitle text file from a YouTube mp4 file using the AI ​​transcription service "Mr. Transcription".

1. Open the "Mr. Transcription" homepage

Transcription Mr.

The AI ​​transcription service "Transcription-san" is a service that can be used from a web browser.

Videos can be uploaded from the top page.

Click here for the top page of "Mr. Transcription"

It can be used from any environment, such as a Windows or Mac computer, or an iPhone or Android smartphone, as long as you are connected to the Internet.

2. Upload your video

Drag and drop the video to where it says "Drag your file here" or press "Select" to select the file.

Where to upload

This will automatically start uploading your files .

Start uploading

This time I uploaded an mp4 file encoded for YouTube.

3. Start the transcription process to convert the subtitle text

Once the video file (in this case an mp4 file) has been uploaded, the transcription process will begin automatically .

Processing screen

Once this is done, you can close the browser window.

You will be notified via email once the transcription of your caption text is complete.

(Of course, there is no problem if you leave the screen open.)

4. Transcription complete

Once the transcription is complete, you can view the transcript.

If you close the screen after uploading, click "History" in the menu and

Click History

Open the "Transcription History" page .

History page

Click on the file name (in this case "douga-mojiokoshi.mp4") on this screen,

Where to click

This will open the details screen .

Details screen

Click the "Download" button and then click "Video Subtitles" from the menu that opens to download the subtitle file.

Download subtitles

Also, if you leave the top page open after uploading, the transcription results will be displayed directly on the top page.

If the top page is still open

In this case, you can download it by pressing the "Subtitle file" button .

Download from "Subtitle file"

This completes the subtitle transcription process.

About the subtitle files for "Mr. Transcription"

The file name is "uploaded file" .

For example, in this case it would be

file name

The subtitle file format is srt file .

An srt file is a file format widely used for subtitle text for videos , and contains a text file with time codes and text like this.

Contents of the srt file

Video editing software such as Adobe Premiere and DaVinci Resolve, as well as YouTube's subtitle function, support srt files , so you can simply load this subtitle file and the subtitle text will be added automatically.

How to add subtitles to a video using a subtitle file in Adobe Premiere

Next, we will explain how to add subtitles using "Adobe Premiere" and "DaVinci Resolve," which are widely used among video editors.

First, let's start with Adobe Premiere .

*This explanation uses Adobe Premiere 23.6.0.

1. Open the project

First, open the project you want to add subtitles to.

Opening a Project

In this example, the video material has simply been loaded, but it has no subtitles or captions.

2. Load the subtitle file (srt file) as a material

Import the srt file of the transcribed subtitle text into the "Project" panel as material.

Drag and drop the srt file or

Drag and Drop

Load it from the menu "File" → "Load" .

"File" → "Import"

*This is the same as when you normally load video, audio, or other materials.

This is how the srt file was loaded.

Loaded state

3. Load the subtitle file into the timeline

Drag and drop the srt file onto the timeline .

Drag and drop to the timeline

A dialog box titled "New Caption Track" will appear, so press "OK".

New Caption Track

Then, the subtitle text was automatically loaded like this.

Subtitles loaded

If you press play to check, you'll see that the subtitles are perfectly set throughout the entire video.

The entire video has subtitles

Of course, you can edit the duration,


You can also edit the text content.

Text editing

4. Encode

Then just encode it into an mp4 file for YouTube.

This completes the process of adding subtitles to an mp4 video for YouTube using Adobe Premiere.

How to add subtitles to a video from a subtitle file in DaVinci Resolve

Next, we will explain how to add subtitles to mp4 files for YouTube using DaVinci Resolve , a video editing software that is as widely used as Adobe Premiere.

*This explanation uses DaVinci Resolve 18.1.1.

1. Open the project

First, open the project you want to add subtitles to.

Opening a Project

The video material (mp4 file) has just been loaded, but there are no subtitles or captions attached to it.

2. Add the subtitle file (srt file) to the media pool.

Add the subtitle text srt file to the media pool .

Drag and drop or

Drag and drop into the media pool

You can add them by going to "File" , "Import", then "Subtitles" .

"Import" → "Subtitles"

3. Drag and drop subtitles

Drag and drop the srt file to insert the subtitle .

Drag and drop to insert subtitles

In this way, subtitles were displayed on top of the video material.

The subtitles were displayed

4. Adjust the subtitles

However, unlike Adobe Premiere, DaVinci Resolve requires some adjustments to the subtitles.

For example, in this example, the left and right sides of the subtitles are cut off.

The left and right sides are cut off

Before encoding into an mp4 file for YouTube, we will arrange the subtitles and decorate the text .

5. Encode

Once you're done adjusting the subtitles, encode the video in the final format, such as mp4.

This completes the process of adding subtitles in DaVinci Resolve.

[Reference] How to add subtitles to videos already uploaded to YouTube

This article explains how to add subtitles from an srt file to an mp4 video that has already been uploaded to YouTube using YouTube's subtitle function .

Please see also.

[Must-see for video uploaders] How to transcribe YouTube videos? A thorough explanation of the tools and process

Adding subtitles to your videos will increase the number of views you get.

As you can see, it's very easy to add subtitle text to an mp4 file for YouTube.

If you use the AI ​​transcription service "Mr. Transcription," you can instantly create subtitle text by simply uploading an mp4 file.

By adding subtitles to your videos, you can reach more viewers and increase watch time.

In addition, transcribing videos makes them easy to translate into foreign languages, so they can be viewed overseas with foreign language subtitles .

Why not use the AI ​​transcription service "Mr. Transcription" to get your videos seen by even more people?

■ AI transcription service "Mr. Transscription"

"Mr. Transcription" is an online transcription tool that can be used from zero initial cost and 1,000 yen per month (* free version available).

  • Supports more than 20 file formats such as audio, video, and images
  • Can be used from both PC and smartphone
  • Supports technical terms such as medical care, IT, and long-term care
  • Supports creation of subtitle files and speaker separation
  • Supports transcription in approximately 100 languages ​​including English, Chinese, Japanese, Korean, German, French, Italian, etc.

To use it, just upload the audio file from the site. Transcription text is available in seconds to tens of minutes.
You can use it for free if you transcribe it for up to 10 minutes, so please try it once.

It is "Mr. Transcription" who can easily transcribe from audio, video, and images. Transcription allows you to transcribe for up to 10 minutes for free. You can copy, download, search, delete, etc. the transcribed text. You can also create subtitle files, which is ideal for transcription of interview videos.
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