clipinstrument
Nothing leaves your device

29 tools ยท nothing uploaded

Video tools that leave your files where they are

Twenty-nine small utilities for converting, shrinking and reshaping video. All of them work inside this tab, on your own machine, which is why none of them ask you to hand anything over first.

Convert between formats

WebM to MP4
for editors and players that reject WebM
MOV to MP4
iPhone and QuickTime files, made portable
MKV to MP4
for TVs, phones and editors that refuse MKV
AVI to MP4
old camcorder and archive footage
Video to GIF
turn a short clip into a loop
WebM to GIF
browser recordings into loops
GIF to MP4
shrink a GIF by around 90 percent
MP3 to MP4
audio into a video file for upload

Audio

MP4 to MP3
pull the soundtrack out of a video
Video to MP3
any video format, audio only
Audio extractor
any video, sound only, your choice of format
WAV to MP3
uncompressed audio, made portable
M4A to MP3
Apple audio for players that want MP3
FLAC to MP3
lossless archive to everyday listening
MKV to MP3
pull the soundtrack out of an MKV
Mute a video
mute a video without re-encoding it

Make it smaller

Video compressor
get under an upload limit without ruining it
Compress for Discord
hit the upload cap on the first try
Change resolution
4K to 1080p and other downscales
Video trimmer
trim a clip without re-encoding

Fix and reshape

Rotate video
fix footage filmed sideways
Mirror a video
mirror horizontally or vertically
Crop video
cut the frame down to a shape
Frame rate converter
60 fps to 30 fps and back
Resize for Instagram
square, portrait and Reels formats

Reference and calculators

YouTube thumbnail size
exact dimensions plus a resizer
YouTube banner size
the safe area explained, plus a resizer
Bitrate calculator
work out the bitrate for a target file size
Aspect ratio calculator
scale dimensions without distorting

Why bother doing it this way

Sending a file to a stranger's server to change its extension has always been an odd bargain. You wait in a queue, you accept whatever retention policy you did not read, and for large files you often wait a long time only to be told something went wrong.

Browsers stopped needing that arrangement several years ago. They can run a full media encoder natively now, so clipinstrument puts one on the page and lets your own processor do the job. The file is opened, worked on and handed back without ever crossing the network.

Where this matters most is not holiday footage. It is the recorded call with a client, the cut that is not public yet, the clip filmed somewhere private. Those are the files people paste into a converter without thinking, and those are the ones worth keeping at home.

The honest limit: a browser tab has a memory ceiling and works slower than installed software. Long recordings are better handled by a desktop encoder, and each tool says so on its own page rather than letting you discover it twenty minutes in.