Watch at
any speed.
Zero compromise.
From ultra slow-motion analysis to 2× rapid binge — every speed is pitch-corrected, frame-perfect and instantly applied. No buffering. No desync. No chipmunk voices.
Pitch-Corrected
Audio at Every Speed
Browser-native speed control simply plays audio faster or slower — resulting in the infamous "chipmunk voice" at 2× or an unnatural drone at 0.5×. Streamit's engine applies time-stretching independently of pitch so voices always sound natural.
- Zero pitch distortion from 0.5× to 2×
- Real-time WSOLA time-stretch algorithm
- Works with stereo, surround and Dolby tracks
Dubbed Tracks
Stay Frame-Perfect
When a viewer switches audio language while watching at 1.5×, both the video and the alternative dubbed audio track receive the exact same speed command simultaneously — they never drift apart even by a single frame.
- Speed applied to both primary & dubbed audio
- Frame-accurate sync guaranteed at any rate
- Compatible with HLS multi-track streams
Speed Preference
That Remembers You
Viewers choose their speed once and forget about it. The Streamit player persists the chosen rate per user profile — automatically applying it on the next episode, the next series, and even across different devices after sign-in.
- Session-level and profile-level persistence
- Cross-device preference sync via API
- Separate preferences per content category
Ready to set the pace?
Give your audience total control without sacrificing quality. Adaptive speed is built into every Streamit license — no add-on, no extra cost.