Speed Up Video Online — Accelerate Segments Free
Make specific parts of your video faster without re-encoding the entire file manually. The Accelerator tool lets you select segments on a timeline and apply speed multipliers of 1.25×, 1.5×, 2×, or 2.5×. Perfect for time-lapse sections, skipping slow intros, or matching the pace that performs best on Reels and TikTok.
Open Speed Up Video Online →How to use this tool
- Open the Accelerator and upload your MP4 or MOV video.
- Select a segment on the timeline you want to speed up.
- Choose a speed rate: 1.25×, 1.5×, 2×, or 2.5×.
- Add more accelerated segments if needed across the video.
- Preview and download your sped-up MP4.
Frequently asked questions
- Can I slow down video with this tool?
- The Accelerator currently supports speeding up segments only (rates above 1×). Slow-motion is not available yet.
- Will speeding up affect audio pitch?
- Accelerated segments are processed at the new playback rate. Preview your export to confirm audio sounds acceptable for your use case.
- Can I speed up only part of the video?
- Yes. Select individual segments on the timeline and apply different speed rates to each one.
- What speed options are available?
- You can choose 1.25×, 1.5×, 2×, or 2.5× for any selected segment.