Check the quick answers below, or write to us — we usually reply within 24 hours.
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Credits & billing
Credits are only charged when a job completes. Failed jobs cost nothing. Purchases are delivered instantly via Stripe.
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Files & downloads
Subtitle files are available for 24 hours after completion. Re-run the job for free if your video is still cached.
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API & integrations
Manage API keys and webhooks from your Account page. Check the API docs for examples and signature verification.
Paste a YouTube or Vimeo URL, select your target language, and click Generate. Subpix transcribes the audio using AI and translates it into your chosen language. Download the SRT, VTT or ASS file in seconds.
No. Subpix uses a pay-per-use model. You buy credits and use them when you need them. Credits don't expire. Start free with 10 minutes included.
YouTube (single videos and full playlists), Vimeo, and direct file uploads (MP4, MOV, MKV, MP3, WAV).
SRT, VTT and ASS formats are supported. All are compatible with YouTube Studio, WordPress video players, and most professional video editing software.
Subpix uses state-of-the-art AI transcription models, which achieve 95%+ accuracy on clear audio in major languages. Accuracy may vary with heavy accents or background noise.
Include your job ID if your question is about a specific job.