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How to Add Subtitles to a Video Automatically

by | Nov 23, 2023

Are you someone who creates videos and wants to make them even better? Subtitles can help you make your content more accessible, engaging, and SEO-friendly. Using a video subtitle generator is a great way to enhance your videos and provide an amazing viewing experience. Video creators can be vloggers, directors, YouTubers, teachers, students, or marketers who make tutorial or promotional videos. Adding subtitles to videos doesn’t have to be a difficult job anymore, thanks to video subtitle generators. In this article, we will introduce you to some of the best online options for automatically generating subtitles.

Why Should You Add Subtitles to Your Videos?

Subtitles are a helpful feature that many people use when watching videos. In fact, a large number of Facebook users watch videos without sound, and subtitles allow them to enjoy the content. Including subtitles in videos has several important benefits. Here are some of the main advantages:

  • Inclusivity: Subtitles help make videos accessible to people with hearing loss. According to the World Health Organization, there are millions of people worldwide who struggle with hearing. By adding subtitles, you can ensure that all viewers, regardless of their hearing abilities, can fully engage with your videos.
  • Expanded audience: Subtitles can help you reach a wider audience. Many viewers watch videos in languages they don’t speak fluently, and a significant portion of YouTube traffic comes from outside the United States. By providing subtitles, you enable international viewers to fully understand and connect with your video content, even if they speak a different language.
  • Improved search engine visibility: Subtitles also benefit your video’s search engine optimization (SEO). Search engines can’t watch videos, so they rely on other factors to understand the video’s topic and value. By adding closed captions or subtitles, you provide text that can be indexed by search engines, helping them understand your video better. This increases the number of keywords associated with your video and improves your chances of appearing in relevant search results.
  • Increased engagement: Subtitles have a positive impact on viewer engagement. People tend to watch videos for a longer duration and show more interest when subtitles are available. For example, YouTube videos with subtitles experience a significant increase in watch time, and social media videos on platforms like Facebook also see a boost in engagement. In general, users are more likely to watch a video to the end when closed captioning is provided.

By including subtitles in your videos, you can make them more accessible, reach a wider audience, improve search engine visibility, and increase viewer engagement. It’s a valuable practice that can benefit both your viewers and your video content.

How to Add Subtitles to a Video Automatically?

1. Use Filmora Audio to Text Converter

Filmora Audio to Text Converter

Filmora video editor has a special feature called ‘Speech to Text’ that can help you create subtitles and captions without having to type anything. This subtitle generator uses AI technology to analyze the speech in your video and convert it into text automatically. You can also make changes to the text and add cool effects to make it more interesting. Also read Best Video Editing Software for Beginner Vloggers.

Follow these steps to add subtitles to a video automatically using Filmora Audio to Text Converter:

Step 1: Import your video into Filmora. Select the video clip and go to ‘Tools,’ then ‘Audio,’ and finally click on ‘Speech-to-Text.’

Step 2: Choose the language you want the audio to be transcribed into. Filmora supports different languages to cater to viewers from around the world. Set it up and click ‘OK’ to begin the process.

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Step 3: Wait for the AI subtitles and captions generator to finish.

Filmora Audio to Text Converter

Step 4: You will see a ‘CC’ file attached to your video. On the screen, you’ll find subtitles that match your video perfectly. You can edit the subtitles and captions, or change the text style to your liking.

Step 5: If you want to make further changes, you can re-edit the subtitles and captions or modify the text style by double-clicking on the CC track.

2. Use Media.io

Media.io

Media.io has a handy tool called the Auto-Subtitle Generator that makes it easy to create subtitles and captions for your videos. It’s a simple and user-friendly program that uses artificial intelligence to generate subtitles automatically. Basically, it can convert audio into subtitle tracks and add them to your video accurately.

To use the subtitle generator, follow these steps:

  1. Go to Media.io and click on “Upload Files Now.” 
  2. You can upload your video or audio file there. 
  3. Interestingly, you can also paste the URL of a YouTube video to work with it. Additionally, you have the option to record your desktop screen or webcam directly in your browser.
  4. Once your video is uploaded, you can add it to the editing timeline and select the “Subtitle” option on the left side. 
  5. Then, click on the “Auto-Subtitle” tab and choose the language for your subtitles. Media.io supports various languages like English, Spanish, French, Croatian, and many more. 
  6. After that, simply click on the “Start auto-subtitle” button to generate the subtitles. 
  7. Finally, click on “Export” to save your video with the subtitles. That’s all there is to it!

3. Use YouTube Automatic Caption

If you have a YouTube channel, you can take advantage of YouTube’s automatic caption feature. After you upload a new video, the platform’s speech recognition technology can generate subtitles for you automatically. However, this feature is currently only available for certain languages like Russian, Japanese, English, Portuguese, German, Spanish, Korean, French, Italian, and Dutch. If your video is not in one of these languages, you’ll need to use traditional methods to create subtitles for your YouTube videos.

Generating automatic captions on YouTube is a straightforward process. Here’s a step-by-step guide:

YouTube Automatic Caption
  1. Upload your new video to YouTube.
  2. Once the upload is finished, go to the Video Manager section.
  3. Locate your uploaded video and click on the Edit drop-down menu next to it.
  4. From the options that appear, select Subtitle/CC.
  5. Set up the language for your video. If the language is recognized by YouTube (like English in this example), you will see an option for English (Automatic). This means YouTube can automatically generate captions for your video based on the language used.
  6. Double-click on the English (Automatic) option and then click on the Edit button. This will allow you to review and make changes to the automatically generated subtitles.
  7. Go through each line of text and make any necessary edits to spelling, grammar, and punctuation.
  8. Once you are done editing, click on the Publish edits button to confirm the changes.
  9. The closed captions will now be displayed next to the title of your video in the Video Manager.

That’s it! You have successfully generated and edited automatic subtitles for your YouTube video.

4. Use Facebook’s Automatic Caption Feature

This tool is only available for advertisers in the US and Canada who use US English. It can be helpful for Facebook users who frequently upload videos in this language to their profiles. However, Facebook’s automatic caption feature isn’t always accurate, so you’ll need to review and correct any subtitles it generates.

Here’s how to use the tool:

Facebook’s Automatic Caption Feature
  1. Go to Facebook’s home page or your profile page.
  2. Click on the Photo/Video option in the Create Post menu.
  3. Find the video you want to upload to your Facebook page.
  4. Enter the video’s title or add a comment about it.
  5. Click on the Share button once the video is uploaded.
  6. The video will appear on your profile page. Look for the Generate button at the top of the post. If you don’t see it, click on the Edit Post button instead. Then, locate the Subtitles&Captions (CC) option and choose the Video Language.
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Review the captions that have been generated to ensure there are no mistakes. Make any necessary edits. Once you’re done, click on the Save to Video button. Your video will now have subtitles.

5. Use VEED.IO Automatic Caption Feature

VEED.IO is an easy-to-use video editor available online. One of its latest features is the ability to automatically create subtitles and captions for videos using artificial intelligence (AI). The software takes the audio from your video and generates text and timecodes based on it. You can review the automatically generated captions and make any necessary edits using the editing tools. You can also choose different text styles for your subtitles. Once you’re satisfied with your video, you can download it without needing to create an account. 

Here’s how it works:

VEED.IO Automatic Caption Feature
  1. Visit the VEED homepage and click on “Upload Video” to go to the editing page. Note that the free version has a 50MB upload limit, but you can upgrade to the Pro version for unlimited uploads. While you don’t need an account to edit a video with VEED, it’s recommended to create one so you can save your projects.
  1. Click on the “Subtitle” tool, and you’ll see three options. Select “Auto Subtitle.” You can choose the language for the subtitles, but it’s usually set to US English by default.
  1. Click “Start,” and the software will begin generating the subtitles. This process should take no more than 60 seconds, depending on the length of your video.
  1. Once the subtitles are generated, you’ll be able to see them and make any necessary edits to the text and timecodes.
  1. VEED offers different text styles for your subtitles, but you can keep the default style if you prefer. If you scroll to the bottom of the page, you can export the subtitles as SRT files. If you want the subtitles embedded directly into the video, you can click the download button in the bottom right corner of the editor.

6. Use Kapwing Auto-Subtitle Maker (Beta)

Kapwing has launched a new beta version of its subtitle maker tool that includes an auto-generating feature. You can either paste the video URL or upload it from your computer. Alternatively, you can try using a video sample to test out this new feature.

To generate subtitles automatically, follow these steps: 

  1. Select “Auto-Generate”: Once your video is loaded, look for the “Auto-Generate” option in Kapwing and click on it. This will initiate the automatic subtitle generation process. Keep in mind that since this tool is still in beta, the generated subtitles may not be completely accurate.
  1. Review and revise: After the subtitles are generated, you’ll see them displayed in the editor interface. Take a look at the text and timing of the subtitles. If any adjustments or corrections are needed, you can manually revise the text and adjust the timing accordingly.
  1. Make additional changes: If you have an existing SRT file with subtitles, you can upload it directly to Kapwing’s Subtitle Maker. This allows you to use your own subtitles instead of relying solely on the auto-generated ones.

7. Use Amara

Amara

This platform (https://amara.org/) doesn’t offer fully automatic subtitle generation, but it assists users in syncing subtitles with videos. If you prefer to create the subtitles manually, you can use Amara to enter the text. However, if you want to save time, you can generate the subtitle file using speech-to-text platforms like Amber Script or Watson.

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Once you have converted the narration or dialogue in your video into text, follow these steps on the Amara platform to add the subtitle file to your video:

  1. Ensure your video is stored online: Your video must be accessible through a web server or a video hosting platform like Vimeo.
  1. Enter the video’s URL: Insert the video’s URL into the address box on Amara’s platform. Then, click on the “Begin” button to add your video to the subtitling system.
  1. Upload existing subtitles: On the left side of the subtitle editor, you will find the question: “Already have subtitles for this video? Upload them directly.” Select the “Upload them directly” option to add the text you generated earlier using a text-to-speech platform.
  1. Select the language: When the “Upload Subtitles” window appears, choose the language used in the video and the text file you are uploading.
  1. Upload and edit subtitles: Click the “Upload” button to add the text file to your video. Then, click on the “Edit Subtitles” button located on the left side of the editor.
  1. Sync subtitles with the video: Syncing the subtitles with your video may be more or less complex depending on the video’s length and amount of dialogue. It is important to be patient and pay attention to detail since even a slight delay in subtitles can ruin the video.

By following these steps, you can utilize Amara’s platform to synchronize subtitles with your video. Remember to be meticulous and take your time to ensure accurate and well-timed subtitles.

8. Use Otter.ai

Otter.ai

Otter.ai is a modern and easy-to-use online tool that allows users to get accurate transcriptions using artificial intelligence. Even with a free account, you can enjoy high-quality transcriptions. The free account allows you to transcribe up to 600 minutes and import up to 3 files per month.

I think this online captioning tool is fantastic because even on the free version, my transcriptions were nearly perfect, with only a few corrections needed for names mentioned in my video.

One of the great features of Otter.ai is that it automatically identifies different voices and removes unwanted sounds and background noise from audio and video files. The process is also simple: just sign up, import your audio or video files, and wait for the transcription process to finish.

Here’s the step-by-step guide to add subtitles to a video automatically:

  1. Sign up and create your account.
  2. Import the audio or video files you want to transcribe.
  3. Wait for the transcription process to finish.
  4. You will now see properly formatted sentences with pauses, sentence endings, and clear distinctions between statements and questions. You can also make edits within the software.
  5. Download the TXT and SRT files, which you can use in video editing tools like Filmora.
  6. To add an SRT file to Filmora for subtitling:
  7. a. Import your video and SRT file to Filmora’s media library.
  8. b. Drag and drop both files onto the timeline, with the SRT file above the main video file.
  9. c. Click the “Play” button to view the subtitles on your video in Filmora.
  10. If you want to learn more about how to add SRT files in Filmora and customize text color and alignment, you can refer to a video tutorial (link provided).

Additionally, if you want a visual recap of all the apps mentioned, there is another excellent resource available.

Conclusion

I hope you now know how to add subtitles to a video. If you’re an influencer or vlogger looking for more inspiration and tutorials to create fantastic videos, please feel free to email us or leave a comment. We value your feedback and will use it to write our future articles.

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