Frame Rate Converter

About Frame Rate Converter

This online frame rate converter allows you to change the FPS (frames per second) of your videos. Convert to standard frame rates like 24, 30, 60 FPS or choose any custom value from 1 to 120 FPS. All processing happens locally in your browser for complete privacy.

What video formats are supported?

Input: MP4, WebM, MOV, and other common formats. Output: You can keep the same format as input or convert to MP4, WebM, or MOV.

How do I convert video frame rate?

Upload your video, select target FPS using presets (24, 30, 60, 120) or custom slider (1-120), choose interpolation method, then click 'Convert Frame Rate'. You can preview the result before downloading.

What is the file size limit?

The maximum file size is 100MB. This ensures smooth processing in your browser. For larger videos, consider using desktop video editing software.

What are the common frame rates?

24 FPS: Cinema/film standard, cinematic look. 30 FPS: TV/web video standard, natural motion. 60 FPS: Smooth motion, gaming, sports. 120 FPS: Very smooth, slow-motion source.

What is the difference between interpolation methods?

Duplicate Frames: Fastest, simply repeats/drops frames. Good for small FPS changes. Blend Frames: Balanced speed and quality, creates intermediate frames by blending. Motion Interpolation: Best quality, analyzes motion to create smooth intermediate frames. Slowest but best for large FPS increases.

Should I increase or decrease FPS?

Increase FPS (upscaling) for smoother motion and slow-motion effects. Use motion interpolation for best results. Decrease FPS (downscaling) to reduce file size or achieve specific artistic looks like the cinematic 24 FPS feel.

Will video quality be affected?

The video is re-encoded with high-quality settings (H.264 codec, CRF 23). Frame rate conversion quality depends on the method chosen and FPS change magnitude. Motion interpolation provides the best quality for increasing FPS.

Is my video file safe?

Absolutely! All video processing happens directly in your browser using FFmpeg.wasm (WebAssembly). Your video file is never uploaded to any server. Everything stays private on your device.

Why does FFmpeg take time to load initially?

FFmpeg.wasm is a powerful video processing library (about 30MB) that runs in your browser. It only needs to load once per session. After loading, all conversions will be fast and efficient.

How long does processing take?

Processing time depends on video length, FPS change magnitude, interpolation method, and device performance. Duplicate frames is fastest (10-30s for 1-min video). Motion interpolation is slowest but highest quality (30-90s for 1-min video).