Change video frame rate
Set how many frames a second the file holds. Dropping from 60 to 30 halves the frames without changing how long it runs.
- Free
- Runs on your device
- No account
- No limits
One file at a time. The video is edited on your own device, so nothing is uploaded and there's no size limit beyond what your browser can hold.
How to change video frame rate
- Drop a video in the box above.
- Pick a frame rate, or type one. The clip stays the same length either way.
- Download. The file keeps its name and its format, with -fps added.
- The first video also fetches the video engine, about 7MB, which your browser then keeps. After that it starts straight away.
About frame rate here
Changing the frame rate changes how many pictures a second the file holds, not how long it runs. Going from 60 to 30 throws away every second frame and leaves the clip exactly as long as it was, usually at a good deal less than half the size, since there's simply less to store.
Raising the rate doesn't add detail that was never recorded. Frames are repeated to fill the gaps, so a 30fps clip at 60 looks the same and takes up more room. It's worth doing when something downstream insists on a particular rate, and not otherwise.
This edit changes the picture, so every frame has to be decoded and encoded again. Your own machine does that work, which is what keeps the file off anybody's server, and it's why a long clip takes longer than a short one. Trimming and removing the sound are the two things here that skip it entirely.
Common questions
Is the change video frame rate free?
Yes, properly free. No paid tier, no trial, no watermark on the result and nothing to sign up for. Put as many files through it as you like, as often as you like.
Are my files uploaded to a server?
No. The change video frame rate runs inside your browser, on your own machine, so your files never go anywhere. Big ones are fine too, up to whatever your browser can hold.
What frame rate should a video be?
24 or 25 is the film look and what most edited video ends up at. 30 is the usual default for a phone. 60 is worth keeping only for fast motion or gameplay, where the extra frames genuinely show. Dropping 60 to 30 is the change most people want, because it halves the frames with no visible difference on ordinary footage.
Does lowering the frame rate make the file smaller?
Usually a lot smaller, since half as many frames means roughly half as much to store, though the exact saving depends on how much movement there is. It's often a better trade than turning quality down, because throwing away frames of a mostly still scene costs almost nothing you can see, while lower quality shows up on every frame at once.