Feature
Generate accurate, timestamped subtitles from any video — SRT, VTT, burned-in MP4, or DOCX. Whisper AI detects the spoken language automatically across 100+ languages. Pay per minute, credits never expire.
check_circle1 credit per minutecheck_circleCredits never expirecheck_circleNo subscription required
Capto uses OpenAI Whisper — the most accurate automatic speech recognition model available — to generate frame-perfect subtitles from any video or audio file. Upload an MP4, MOV, WebM, or MKV and receive a fully timestamped transcript in under two minutes, complete with word-level timestamps for karaoke-style highlighting. Whisper detects the spoken language automatically, supporting 100+ languages without any configuration. The resulting transcript is fully editable in Capto’s workspace, where you can correct any segment before exporting. Pay only for what you use: transcription costs 1 credit per minute of video, and credits never expire. Export as SRT, VTT, DOCX, or a burned-in MP4 with captions baked directly into the video. For a complete walkthrough of uploading subtitles to YouTube, see our step-by-step guide.
Capto uses OpenAI Whisper, a deep learning speech recognition model trained on 680,000 hours of multilingual audio. When you upload a video, Capto extracts the audio track, sends it to Whisper in compressed segments, and receives back a timestamped transcript with word-level timing. Accuracy on clear, single-speaker audio consistently exceeds 95%. For multi-speaker videos, enabling speaker diarization routes the audio through AssemblyAI, which identifies and labels each speaker before returning the transcript.
The transcript lands in Capto’s workspace editor, where you can click any segment to correct it inline. Word-level timestamps power the karaoke-style subtitle preview — as the video plays, each word highlights in sync. Once you’re satisfied, export in any format. The same transcript drives every export, so editing once applies everywhere: SRT for YouTube, VTT for your web player, burned-in MP4 for Instagram Reels, DOCX for your show notes.
Whisper identifies the spoken language from the audio with no manual selection required. Below are some of the most commonly used languages. After transcription, you can translate your subtitles into 60+ target languages — including Spanish, French, Arabic, Japanese, Hindi, German, Portuguese, Korean, Italian, Russian, and Chinese — with four tone presets.
Capto uses OpenAI Whisper, which consistently achieves 95%+ accuracy on clear audio. Accuracy depends on audio quality, speaker accent, and background noise. Every segment is fully editable in the Capto workspace so you can correct any errors before exporting.
Most videos are transcribed in under 2 minutes. Videos processed with speaker diarization (multi-speaker labeling) may take up to 4 minutes. Transcription costs 1 credit per minute of video.
Yes. Whisper automatically identifies the spoken language from the audio with no manual selection required. It supports over 100 spoken languages. If you need subtitles in a different language, you can then translate them into 60+ languages using Capto's built-in translation feature.
Capto accepts MP4, MOV, WebM, AVI, and MKV files up to 500 MB per upload (2 GB on the Growth plan). Audio files are not currently supported — the video must contain a video track.
SRT, VTT, TXT, DOCX, and burned-in MP4. SRT and VTT are accepted by YouTube, LinkedIn, Vimeo, and most LMS platforms. The burned-in MP4 has captions baked into the video file and works on any platform including Instagram, TikTok, and X.
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