Upload a video or audio file and get accurate, timestamped captions in seconds. Download as SRT or VTT — free, no watermark.
Drop a video or audio file here
or click to browse — MP4, MOV, MP3, WAV supported
Upload any video or audio file. It transmits it to a voice recognition engine, which captures the utterances with timestamps, then prepares them for subsequent classifications as caption lines. You can save the outcome in SRT or VTT formats for subsequent insertion into your video editor, or as a raw transcript.
Accuracy depends on audio clarity — clean, well-recorded speech transcribes best. Heavy background music or multiple overlapping speakers may need manual touch-ups after generation.
A large share of video views on social platforms happen with the sound off — people are scrolling on the bus, sitting in a meeting, or just don't want to disturb someone nearby. If your video relies entirely on audio to make its point, that's a lot of potential viewers who scroll past before your message ever lands. Captions turn a sound-off viewer into an engaged one.
Captions also make your content more accessible to Deaf and hard-of-hearing viewers, and to anyone watching in a second language who follows spoken English more easily when they can read along. On top of that, captions give search engines actual text to index — a video with an accurate transcript has a better chance of surfacing in search results than one that's just a silent block of pixels to a crawler.
None of this requires hiring someone to type out your video line by line. A rough transcript that you clean up in a few minutes gets you most of the benefit, and that's exactly what this tool is built for.
Start with clean audio. Speech recorded close to the mic, without heavy room echo or wind noise, transcribes far more accurately than audio recorded from across a room.
Keep background music low. A loud music bed under dialogue is one of the most common causes of missed or garbled words in any speech-to-text tool, not just this one.
Avoid overlapping speakers. When two people talk at once, the engine has to guess which words belong to whom — expect more errors in those stretches.
Always proofread before publishing. Names, brand terms, and industry jargon are the words most likely to come out wrong — a quick pass through the editable caption list catches these fast.
Manually adding captions to long videos may be a very tedious task and time-consuming! Auto Captions Generator can help you overcome it by generating captions from speech within a few minutes. You can generate subtitles toYouTube Videos, Instagram Reels, TikTok Videos, Podcasts, Online Courses, Interviews, Webinars, Tutorial Videos, Business presentations and more in a fast and inexpensive way and without needing to edit it.
Accessibility and Engagement Captions increase access and engagement many people view content online and on social media with no sound, the use of captions means they can still understand your content with no sound even if they don’t have headphones or are watching videos in a noisy environment. People that are hard of hearing also need access to subtitles.
Our tool supports the biggest range of video and audio types of files, including MP4, MOV, WebM, MP3, WAV, M4A. Once you uploaded media file, our speech recognition engine takes over the spoken part of the audio and will provideyou with timed captions. You can edit each caption line individually and download the final file. This is great for fixating incorrect names, technical vocabulary, punctuation etc.
You can download these automatically generated subtitles in SRT, WebVTT or TXT. You can upload SRT files to most video editors that are professionally used - for example, Adobe Premiere Pro, DaVinci Resolve, Final Cut Pro, Filmora, CapCut, as well as a wide variety of online video editors. WebVTT format is best suited to the HTML5 video player or for uploading to your website. TXT format generates simple plain text.
With our caption editor, you can edit captions after uploading their content until they are exactly the text you would like to publish. This process will take you only a fraction of the time compared to create captions completely from hand! Proper captions also boost viewer retention since a viewer can keep watching a video on a noisy place such as public transports, public place, meeting room or any where without audio, etc.
Now you can effortlessly generate professional-quality subtitles. If you’re a content marketer, creator, social media manager, podcaster, freelancer, educator or small business owner, you can use our free Online Auto Caption Generator to quickly generate accurate subtitles without complex software. Just upload your file, auto-generate captions, edit and download in your favourite format! Easy and fast processing and caption editing, along with a range of output formats, means it’s suitable for everyone, from beginners to seasoned pros.
Most people scroll with the sound off. Burned-in or attached captions keep them watching past the first two seconds.
Learners can play along, seek a specific step further down or enjoy a lesson in a quiet office or library.
Making your audio only podcast clip in to an captioned video allows you to embed or share clips on video based social media platforms.
Those who watch in an unfamiliar language tend to focus on captions for words which would be difficult to hear at natural speed.
Everything you need to know before generating your first caption file.
Most common video formats (MP4, MOV, WebM) and audio formats (MP3, WAV, M4A) work.
This free tool works best on clips under a few minutes. Longer files may take longer to process.
Yes — each caption line is shown in an editable box before you download, and you can also edit the SRT or VTT file afterward in any text editor or your video software.
Both are caption file formats with the same basic idea — timed text lines. SRT is the more universal format supported by nearly every video editor, while VTT (WebVTT) is the standard used for captions embedded directly into web video players.
No — it generates a separate caption file (SRT/VTT) or transcript, which you then attach in your video editor or upload alongside your video on platforms that support caption files. This keeps the text fully editable rather than permanently burned in.
Speech-to-text engines transcribe based on how a word sounds, so uncommon names, brand terms, or niche jargon are the most likely words to need a manual fix. That's exactly why every line is editable before you download.
Yes, but accuracy drops as background audio gets louder relative to the speech. For best results, keep dialogue clearly audible above any music bed.
Your file is sent to the transcription service only to generate the text and is not used for anything else on our end. See our Privacy Policy for more detail.
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