Help
Short answers to the questions we get most.
Want the details? Read How video compression works.
Common questions
Which videos are supported?
MP4, MOV, M4V, MKV, WebM, AVI, WMV, FLV, MPEG/VOB, MTS/M2TS/TS, 3GP and OGV, up to 1 GB, 30 minutes and 4K resolution, from your device or a public link. Video codecs: H.264, HEVC, VP8, VP9, AV1, MPEG-1/2/4, ProRes, WMV/VC-1, Theora and older Flash and phone codecs.
Why was my video rejected?
We check the file's contents. Protected (DRM) videos, files with several video tracks, and unknown codecs are rejected with a specific error code.
Why does it say “We're busy right now”?
To keep encoding fast, only a few videos are queued at once. Try again in a few minutes.
The result is “Above target”.
Your target leaves too few bits for the clip's length. Lower the resolution, lower or remove audio, or trim the video.
Do I need to keep the tab open?
Yes, until the result appears. Only your browser holds the private link to your video, so closing the tab loses it.
How long is my video kept?
The download link expires 60 minutes after encoding; the video is deleted automatically, normally within 75 minutes. Canceling deletes it immediately.
Can I compress images or PDFs here?
Images: our sister site File Compressor. PDFs: LoverPDF.