Upload your video or audio file. AI transcribes it and downloads an SRT subtitle file ready to upload to YouTube — no account required.
MP3, MP4, WAV, M4A, FLAC, OGG, or WebM · Max 25 MB · No account required
Match the spoken language for transcription — or pick a different language to translate the subtitles automatically.
Drag and drop your file here, or click to upload
MP3, MP4, WAV, M4A, FLAC, OGG, WebM · Max 25 MB
How it works
CaptionX handles the transcription inside your existing editing workflow. The SRT file it produces goes straight into YouTube Studio — no extra tools or manual formatting required.
CaptionX transcribes your video's audio inside Adobe Premiere Pro in your chosen language, producing a timed caption file.
Export the generated captions as an SRT file. SRT is the standard subtitle format accepted by YouTube, Vimeo, and every major video platform.
In YouTube Studio, go to Subtitles for your video, click Upload file, and select the SRT file. YouTube applies the timed subtitles immediately.
YouTube's own auto-captions are convenient for English content but fall short for multilingual creators, accented speech, and content where accuracy matters.
YouTube's built-in auto-captions cover a limited set of languages. CaptionX generates accurate subtitles in 57+ languages, including Arabic, Hindi, Urdu, Indonesian, Thai, Vietnamese, and many more — so your content reaches a global audience.
YouTube auto-captions are convenient but often inaccurate for accented speech, fast talkers, and non-English content. CaptionX uses AI transcription tuned for accuracy — the output is ready to upload without manual correction.
CaptionX exports a properly formatted SRT file that YouTube accepts without modification. There is no intermediate formatting step, no download from an external site, and no manual cleanup needed.
Free plan
CaptionX includes 10 free subtitle generations per month inside Adobe Premiere Pro. Enough to test the accuracy on your actual content before committing to a paid plan.
Free plan includes
CaptionX generates subtitles inside Adobe Premiere Pro and exports an SRT file you can upload directly to YouTube. In YouTube Studio, go to Subtitles, click Add for your video, choose Upload file, and select the SRT file.
Yes. CaptionX includes 10 free subtitle generations per month inside Adobe Premiere Pro — no credit card required.
CaptionX generates YouTube subtitles in 57+ languages, including English, Spanish, Portuguese, French, Arabic, Hindi, Urdu, Indonesian, Thai, Vietnamese, Japanese, Korean, and many more.
Yes. YouTube generates automatic captions for supported languages, but the accuracy varies and language coverage is limited. For non-English content or when accuracy matters, generating your own subtitle file with CaptionX and uploading it gives much better results.
YouTube accepts SRT (.srt), VTT (.vtt), and other formats. CaptionX generates SRT files, which are the most widely supported format and work across YouTube and every other major platform.
YouTube's auto-captions can struggle with accents, technical vocabulary, non-English speech, and background noise. CaptionX uses AI transcription tuned for accuracy across languages and content types.
Start free inside Adobe Premiere Pro. No credit card required.