Add subtitles & closed captions to videos automatically

Create closed captions and subtitles automatically for your video with our fast and accurate closed caption software. Advanced speech recognition technology quickly converts speech to text to create closed captions in just minutes.

Automatic Closed Caption Generator

Create accurate closed captions & subtitles in minutes with SubCaptioner

Lightning Fast

Super Affordable

Crazy Accurate

  • $0.25
    per minute
    • Files back in just minutes
    • High accuracy using our advanced speech recognition technology
    • SRT, WebVTT, & TXT files for one combined price
    • Secure checkout

Automatic closed caption generator vs. manual closed captioning services

12x faster

Available 24/7

No scheduling

Less costs

Automated closed captioning is 12X faster than manual closed captioning and more affordable. While human captioners can take 4 times the length of the video to create closed captions, automated closed captioning takes just minutes. Powered by advanced automatic speech recognition (ASR) technology, SubCaptioner provides accurate closed captions and subtitles that are just as good as those made by humans, but much quicker and less costly.

Our closed caption generator is also easy-to-use and accessible 24 hours a day. For last-minute closed captioning needs, SubCaptioner is available to give you an SRT file in just minutes. There’s no scheduling with humans involved or waiting 2-3 business days for your file. Simply upload your media, pay, and download your closed caption file. 

Transcribe your in just minutes

Transcriptions for Educators


Educators of all levels seek to provide their students with content that is accessible and helpful for their learning experience. Closed captions make online learning videos accessible to those who are deaf or hard-of-hearing, as well as those who only have access to the videos with the sound off. They also improve the overall rentention and comprehension rates amongst students by helping them to better understand speech and better engage with the content. 

Transcriptions for Businesses


Meetings, interviews, conferences, and marketing materials are just a few pieces of video content that businesses need to caption. Adding closed captions to these types of content ensures that employees are comprehending important information and opens up your marketing campaigns to a wider audience. Closed captions also help businesses to remain ADA compliant and not discriminate against employees who are deaf or hard of hearing. 

Transcriptions for Creators


Video creators are fighting to find success online in a dense and competitive environment. With so many podcasts, YouTube channels, and documentaries available for consumption, how can creators capture their audience’s attention? Closed captions can help, by not only ensuring that content is accessible to a wide audience but also by boosting SEO performance. A professional SRT file is used by search engines to crawl and index content and then boost it’s rankings in searches, making content more likely to get in front of the intended audience.

Transcriptions for Religious Organizations


Video is a great way for religious organizations and houses of worship to spread their message further than within the four walls of their building. Recorded sermons, services, conferences, etc. all should include closed captions to help viewers comprehend the message better. The closed captions ensure that everyone, including those who are deaf, hard-of-hearing, watching with the sound off, or who speak a foreign language, can access an important message.

Transcriptions for Government


Government institutions have the responsibility to share important information with their constituents in a manner that is easy to comprehend and access. Many government offices share information online via video to help a wide range of individuals access it any time of the day. When these videos are captioned, government institutions ensure that all of their constituents can easily understand what is being said. 

Why you should add closed captions to your content

Adding transcription and closed caption files to the audio or video content you post online can improve your content’s accessibility, usability, SEO performance, engagement rates, and shareability.


69% of people watch videos online with the sound off. Without closed captions or a text transcript, content isn’t accessible to them. Content that isn’t captioned also is inaccessible to individuals who are deaf or experience hearing loss.


Consider, also, the benefits of having a written text version of your video or audio file. Captions can be used as text files to easily pull quotes and create content for social media as well as store information for future reference and use.

SEO Performance

Closed captions are full of keywords that make it easier for search engines, such as Google, to crawl and index your content. Better indexing leads to more search traffic and viewers.

Engagement Rates

Videos that are captioned get 40% more views and often experience a longer average watch time. When viewers watch the video the whole way through, they’re more likely to interact by liking, commenting, or sharing.


It can be difficult for viewers, especially viewers who are also reporters, to share direct quotes from your content if it isn’t transcribed into captions. Providing a transcript of your content gives individuals the chance to copy and paste portions of what was said and share it with their own personal communities.

Looking to caption more than 50 hours of content?

Contact our sales team to learn about our enterprise pricing and services for individuals and organizations looking to bulk order more than 50 hours of automated closed caption services at a time.

Learn more about our other automated services

Automated Subtitle Translations

Automated Transcription Services

Frequently asked questions

Have questions about our captioning software? Read through the FAQs and if your question still isn't answered, feel free to contact us.

Contact us

Our automated voice processing solution is faster than real time and most files, under 8 minutes, are ready in just a few minutes. Longer files, obviously, take a bit more time but SubCaptioner is much faster than a human captioner at a fraction of the cost.

We offer special pricing for bulk orders. If you have 50+ hours to caption or transcribe, contact us directly at

We currently offer closed captioning services for over 45 languages including Arabic, Bashkir, Basque, Belarusian, Bulgarian, Cantonese (Traditional), Catalan, Croatian, Czech, Danish, Dutch, English (American, Australian or British spelling), Esperanto, Finnish, French, Galician, German, Greek, Hindi, Hungarian, Interlingua, Indonesian, Japanese, Korean, Latvian, Lithuanian, Malay, Mandarin (Simplified or Traditional), Marathi, Mongolian, Norwegian, Polish, Portuguese, Romanian, Russian, Slovakian, Slovenian, Spanish, Swedish, Tamil, Thai, Turkish, Uyghur, Ukrainian, Vietnamese, and Welsh. It’s important to note that accuracy can vary across languages.

We currently offer English and Spanish translated subtitling services at $1.67 per minute. If you need translated subtitles for your video, visit our Translated Subtitles page to get started.

Our team is always available to help if you have any concerns about your order. Send us an email at and we’ll respond as fast as we can. Contact us here.

Once you’ve downloaded your closed caption file, you can easily upload this file alongside your video to any platform that you use for video publishing. On Youtube, for example, just look for the menu tab “subtitles” and you’ll be able to easily upload your SRT file here.

We understand that your file and payment safety is incredibly important. We use a secured payment system through Stripe to ensure that your payment information is secure and encrypted. Media files processed by SubCaptioner are deleted once your caption or transcription files have been created and are never seen by anyone other than the ASR technology.

Yes, a minimum charge of $1 US (or equivalent) applies to all transactions – the equivalent of 4 minutes. If you have media files under 4 minutes, we recommend uploading multiple videos to the same cart before checkout.

Many video players (such as VLC) allow you to preview your video with captions from an SRT file such as that created by SubCaptioner. If you spot an error then the SRT file can be easily modified in any text editor. For more advanced editing and/or longer media files, we recommend a caption/subtitle editing software such as WinCaps.

When checking out, you will be given prices in US Dollars ($), Euros (€), or British Pounds (£) depending on your location.

SubCaptioner supports MP3, WAV, MP4, WMV, and MPEG1 as input files. For output files, we provide SRT and WebVTT subtitle/caption files as well as TXT transcript files.

Our maximum input file size is 1GB with a maximum duration of 120 minutes. If your video is over 1GB but less than 120 minutes long, we recommend you convert the file into an mp3 prior to upload.

SubCaptioner is supported on the latest desktop versions of Chrome, Edge, Firefox, and Vivaldi. File upload capabilities may not be available on other web browsers such as Safari Mac OS. The use of mobile devices is not currently recommended.