Video Frame Rate Reducer is shaped around how people actually use video editing and conversion utilities online: open the page, drop in a file, get the result. Lower the frame rate of any video to 60, 50, 30, 25, 24, 15, 12, or 10 fps. Smaller files, faster uploads. Files are processed entirely in your browser with FFmpeg WebAssembly. The interface stays out of the way once the work begins so the engine can use the available CPU and memory for the actual transformation.
The engine behind the page is FFmpeg compiled to WebAssembly. It reads your file in-memory and writes the result back into the browser. Supported inputs include MP4, WebM, MOV, MKV, AVI, FLV, and OGV. For 500 MB and below the work usually completes in seconds; larger files mostly depend on how much spare RAM your device has.
Video Frame Rate Reducer is shaped for the gap between "I'll do it by hand" and "I'll script it." When the job is small enough that automating it would take longer than doing it, but annoying enough to want a focused tool — that is the situation this page is built for.
The browser sandbox isolates the page's JavaScript from the rest of the system, the same way it isolates every other tab you have open. Video Frame Rate Reducer works inside that sandbox: it reads the file you give it, processes it with FFmpeg compiled to WebAssembly, and writes the result back. Nothing leaves the page's memory unless you choose to download or copy it.
On limits: 500 MB per file is the ceiling. Output formats and quality settings are listed in the controls panel above, and they apply to every run.
As a workflow component, Video Frame Rate Reducer is the part you reach for when a single, well-defined video editing and conversion step needs to happen. It performs that step and returns a standard file you can carry into the next part of your pipeline.
Common audiences for Video Frame Rate Reducer include teams compressing demo recordings and creators trimming short clips, but plenty of people land on the page through a one-off search and never come back — that is also fine. The tool is built to be useful even when you only ever need it once.
Output handling is intentionally boring: Video Frame Rate Reducer produces `{name}-edited.{ext}` and triggers your browser's standard "save" behaviour. If you have a default download folder configured, that is where it will land. There is no Favtoo-side history of jobs you have run.
Video Frame Rate Reducer is honest about scope: it handles a single, well-defined video editing and conversion step. Specialist edge-case work — uncommon formats, very large inputs, or pipelines that need scripting — is what dedicated desktop apps are for. This page handles the common case quickly.
Video Frame Rate Reducer is one example of a broader pattern: utility software increasingly works as single-page, client-side experiences. Every page in the catalog is shaped that way, which keeps each tool fast to load and easy to recommend in a single link.
A few practical tips that experienced users of Video Frame Rate Reducer pick up over time. First, keep your default browser updated — the engine relies on standard web APIs and newer browser versions are noticeably faster than ones from a few years ago. Second, close other heavy tabs before processing a large input; the engine shares CPU and memory with whatever else is open. Third, if you re-run the same kind of job often, your last-used settings are remembered for the rest of the tab session, so subsequent runs are essentially one click.
Video Frame Rate Reducer fits the gap where opening a desktop app feels heavy and writing a script feels overkill. The page handles the common video editing and conversion task with sensible defaults so a single visit usually completes the job; for highly specialised work, a dedicated desktop application can offer more knobs to turn.
For most failure modes, refreshing the page and re-running the job is enough — the engine has no persistent state to corrupt. If the same input fails twice in a row, the input itself is most likely the problem (a truncated file, an unexpected variant of the format, or a stream the engine does not recognise).
That is the whole tool. Use Video Frame Rate Reducer for as long as it stays useful to you, and if it does, the catalog has many more tools built the same way. Each applies the same single-purpose discipline, so the way you used this page transfers to the next one you try.
A WebAssembly build of FFmpeg loads in this page and re-encodes your video at the chosen frame rate using `-r`. Excess frames are dropped at uniform intervals, then the video is written as H.264 + AAC MP4 — entirely on your device.
Server tools use multi-threaded native FFmpeg with hardware encoders. WebAssembly is single-threaded inside the browser, typically 3–6× slower for re-encoding. The trade-off is total privacy: your video never leaves your device.
Reducing 60→30 fps usually shrinks the file by 30–45%. 60→24 fps cuts about 50%. 60→15 fps cuts about 70%. Exact savings depend on motion complexity.
30 fps is the web standard. 24 fps is cinematic and gives a film-like motion feel. 60 fps preserves smooth motion (sports, gaming). 15 fps is great for screen recordings of static content.
Below 24 fps, fast motion will look noticeably choppier. For mostly static content (presentations, talking heads) you can drop to 15 fps without much issue. For action footage, stay at 24+ fps.
No — audio plays at its normal pitch and speed. Only video frame timing changes.
Up to 500MB. The reduction itself is straightforward but the re-encoding step is memory-bound — long 4K clips may need to be downscaled first.
No. The encoding runs entirely in your browser tab. Nothing is transmitted, stored, or logged. Closing the tab erases the file from memory immediately.
Video Frame Rate Reducer uses native HTML controls wherever possible, which means keyboard navigation, focus rings, and screen-reader labels work the way the platform expects. The drop zone accepts files via the keyboard-accessible file picker as well as drag-and-drop, and result downloads use standard browser download flows. If you spot an accessibility gap, Favtoo treats it as a bug worth fixing.
Video Frame Rate Reducer can be used for personal and commercial work alike — there is no separate "business" licence to purchase. The output you generate is yours to use however you want, including in client deliverables, internal documents, or commercial products. Favtoo's only ask is fair, individual use; the tool is not designed to be embedded as a backend service or wrapped behind an API for resale.
Most jobs finish in seconds. Speed scales with input size and with how many CPU cycles your browser tab has available — the engine runs in your browser, so it shares resources with whatever else you have open. For inputs near the 500 MB ceiling, expect anywhere from a few seconds to roughly a minute on a typical laptop. Closing other heavy tabs noticeably speeds things up.
Video Frame Rate Reducer accepts MP4, WebM, MOV, MKV, AVI, FLV, and OGV. If your input is in a format that is not directly supported, convert it first using one of Favtoo's converter tools — every Favtoo converter outputs a file that is a clean input to the next tool in the chain.
Inputs are capped at 500 MB per file, which keeps memory usage stable across phones, tablets and older laptops. You can run Video Frame Rate Reducer as often as you need; every run produces a full-quality result.
Video Frame Rate Reducer is a static page running an open-source engine in your browser, so a typical corporate firewall does not get in the way as long as it allows JavaScript and WebAssembly to load from Favtoo. For teams that need to host it themselves on an internal network, the underlying engine (FFmpeg compiled to WebAssembly) is open-source and can be packaged into a private build with the same behaviour. Reach out via the Contact page if that is something you are exploring.
Video Frame Rate Reducer runs in any modern mobile browser — Safari, Chrome, Firefox and the in-app browsers in most messaging apps all support the underlying APIs. Performance depends on the device: a recent phone handles typical inputs nearly as fast as a laptop, while older devices may take a few seconds longer near the 500 MB ceiling. The interface lays out cleanly on small screens, so you do not need to pinch-zoom to see the controls.
Your file is processed inside your browser by FFmpeg compiled to WebAssembly. The engine reads the file's bytes from your tab's memory, computes the result, and writes the result back into the tab. You can confirm what the page does by opening developer tools and watching the Network tab during a run — the requests you see are for the tool's static assets only.
Video to GIF
Convert any video clip to an animated GIF entirely in your browser. Pick the start, length, frame rate, and width — your file is processed locally with FFmpeg WebAssembly and never uploaded.
Screen Recorder
Record your screen, a window, or a browser tab directly in your browser. Optionally include system audio and your microphone. Capture, preview, and download the video without installing any app — and without uploading anything.
Webcam Recorder
Record your webcam directly in your browser with optional microphone audio. Pick the resolution (480p, 720p, or 1080p), frame rate, and mirror mode, then capture and download the result without installing any app.
Screen + Webcam Recorder
Record your screen with your webcam composited into a picture-in-picture corner — perfect for tutorials, course videos, demos, and reaction recordings. Pick the camera position, size, and audio sources, then capture and download in your browser.
Video Slideshow Maker
Turn a stack of photos into an MP4 slideshow with per-slide durations, crossfades, and an optional soundtrack. Pick the resolution (up to 1080p), frame rate, and transitions, then download a single MP4 — all processed in your browser with FFmpeg WebAssembly.
Video from Images + Audio
Combine a stack of photos with a music track or narration into a single MP4 video. Pick the resolution, per-slide duration, transitions, and let the slideshow length match the audio. All processed in your browser with FFmpeg WebAssembly.
Video Trimmer
Set precise in and out timestamps, snap to keyframes when needed, and document handles for social-safe cutdowns.
Video Splitter
Split any video into 2–10 equal-length pieces, packaged as a downloadable ZIP. Files are processed entirely in your browser with FFmpeg WebAssembly using lossless stream-copy.