Video tools
Turn a phone MOV into MP4, shrink a screen recording, cut just the part you need from a long video, join clips and burn in text or subtitles. The browser's hardware encoder does the work, so multi-GB videos are fine with no upload.
Tools
Convert video formatConvert between MP4, WebM, MOV and MKVCompress videoShrink by lowering quality, resolution or frame rateTrim videoCut a range losslessly by start and end timeExtract audio from videoPull just the audio out of MP4, MOV and moreVideo to GIFTurn part of a video into an animated GIFRotate videoFix sideways videos in 90° stepsChange video speed0.25× to 4× fast or slow motion, keeping pitchAdd text to videoBurn a title, credit or notice into a videoBurn subtitles into videoEmbed SRT / WebVTT subtitles into the pictureMerge videosJoin several videos into one in order
Popular conversions
About the video tools
Video processing uses WebCodecs, which lets JavaScript call the same decoders and encoders the browser uses for playback. On most devices they run in hardware, making them several times to more than ten times faster than a WebAssembly build of ffmpeg, with far lower battery use.
Supported browsers are desktop Chrome, Edge, Safari 17+ and Firefox 130+. Output in H.264 (MP4 / MOV / MKV) and VP9 (WebM) depends on the encoders your browser provides, so formats your device cannot produce are shown disabled in the form.