ViralMint bundles faster-whisper as a desktop transcription tool — unlimited minutes, no cloud upload, word-level timestamps, runs offline on CPU int8.
Cloud transcription services meter every minute and break when your internet does. ViralMint runs faster-whisper locally in int8 mode — process hours of audio on a laptop, no per-minute charge, no network round-trip per chunk.
Whisper's word-level timestamp output is the foundation of word-by-word ASS captions. ViralMint pipes the timestamp JSON straight into the caption renderer — no manual SRT cleanup, no off-by-frame caption sync.
Whisper handles 100+ languages out of the box (English, Mandarin, Spanish, Hindi, Arabic, Japanese, etc.). Your audio never leaves your machine — useful for NDA / sponsor / private content that cloud services would have to upload.
Use the desktop app's import flow (Videos page → Import Video) or paste any URL into chat to download via yt-dlp.
ViralMint transcribes the video locally with faster-whisper int8 — typical speeds: ~30s for a 5-minute video on a mid-range laptop CPU.
The transcript appears in the video detail drawer with full word-level timestamps. Copy as plain text, JSON, or SRT — or feed into the AI insight extraction step to get hook + structure + tone.
ViralMint chains the transcript into Smart Video assembly (script-aware generation), caption rendering (word-by-word ASS), translate-and-dub, and clip extraction (virality scoring against the spoken content).
Last updated May 2026
| Capability | OpenAI Whisper API | Otter.ai | Rev.com | ViralMint |
|---|---|---|---|---|
| Pricing | $0.006/min cloud | $8.33+/mo | $0.25/min | Free (runs locally) |
| Cloud upload required | Yes | Yes | Yes | No — fully local |
| Word-level timestamps | Yes | Limited | Manual editor | Yes (Whisper native) |
| Languages | 100+ | 30+ | 30+ | 100+ (Whisper) |
| Works offline | No | No | No | Yes |
highlighted column = clearer fit for that capability. Tied capabilities are left unmarked.
On a mid-range laptop CPU in int8 mode, ViralMint's local Whisper transcribes 5 minutes of audio in roughly 30 seconds — comparable to the cloud API's wall-clock turnaround once you account for network upload/download time. On a slower machine the local path is slower; on a recent M-series Mac or modern Ryzen, it's often faster than the cloud round-trip.
faster-whisper's small.en (English-only) or small (multilingual) by default — good balance of speed and accuracy on consumer hardware. You can swap to medium or large-v3 in Settings if you want higher accuracy at the cost of speed. The base model is bundled with the desktop app so no separate model download is needed for the default flow.
Yes. Drop any mp3, wav, m4a, or video file into the desktop app's import flow. Whisper transcribes the audio track regardless of whether there's a video component. Useful for podcasts, meeting recordings, or audio notes you want word-level timestamps on.
The Local Whisper Transcription ships inside the free ViralMint desktop app — no subscription, no watermark, no per-minute cap. Download once, use on as many videos as you want.
