Keyframes

Re-encode a video with a fixed keyframe interval to improve seeking and scrubbing performance.

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Choose a video or drag it here

Frames between keyframes (GOP size)

Lower = more keyframes = better seek precision, larger file. Higher = fewer keyframes = smaller file, worse seek.

Max width

Original 1920 1280

Caps the video width (height scales to keep aspect). High-resolution videos (4K) can run out of memory in the browser; downscaling avoids that.

Advanced settings

Output format

MP4 WebM

MP4 (H.264/AAC) is fast. WebM (VP9/Opus) is much slower to encode in the browser.

Strip audio (mute the video)

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