Question 1

Is there a file size limit for video conversion?

Accepted Answer

We impose none, because your file is never uploaded. The real limit is your device's memory: on a typical laptop, clips up to a few hundred megabytes convert comfortably, while multi-gigabyte files may run out of memory.

Question 2

How do I extract the audio from a video?

Accepted Answer

Add the video, choose MP3 or WAV as the output format — or tick Audio only — and convert. The video track is discarded and you get just the soundtrack.

Question 3

Why is my file rejected as unsupported?

Accepted Answer

Conversion uses the WebCodecs engine built into your browser, so it can only handle codecs your browser can decode. H.264, VP8, VP9, AV1, AAC, MP3 and Opus work almost everywhere; some older AVI and MKV codecs are not supported by any browser and need a desktop tool.

Question 4

Is converting in the browser slower than a desktop app?

Accepted Answer

Not necessarily. Because it uses the same hardware video engine your browser uses to play video, conversion is hardware accelerated and often close to desktop speed — with the difference that your file never leaves the machine.