Crop a video to the part of the picture that matters: cut away black bars, an untidy edge or a distracting corner, or turn a landscape video into a square or vertical one. The sound is kept.
How to crop a video
- Upload the video.
- Draw the area to keep on the video, or pick a Shape such as Square, Vertical (9:16) or Widescreen (16:9). A shape on its own is taken from the middle of the picture; together with a drawn area, from the middle of that area.
- Choose the quality and start. The result shows exactly which area was kept.
Getting the shape right
The area is chosen on the video as it plays: upright, and with the picture's real proportions. That matters for two kinds of video:
- Upright phone videos are often stored sideways with a rotation flag. The cropper turns them upright first, so the area you draw is the area you get.
- Videos with non-square pixels (DVD, some camcorders and TV recordings) are shown wider than they are stored. Shapes are measured on the picture as shown, so a square really is square, and the result has square pixels that look right in every player.
Video codecs need even sizes, so the area's position and size are rounded to even numbers of pixels. The result is exactly the kept area; it is not enlarged.
Format and sound
MP4, MOV, MKV and WebM videos stay in their format; other formats (AVI, WMV, FLV, MPEG, TS…) become MP4. The picture is re-encoded with H.264 (VP9 for WebM) at the quality you choose. Every sound track is kept, copied unchanged where the format allows, and MKV, MP4, MOV and WebM keep their subtitles. HDR videos are converted to standard dynamic range.
Limits
Uploads can be up to 2 GB. Because the whole video is re-encoded, it can be up to about 25 minutes of 1080p at 30 frames per second (6 minutes of 4K), and longer for smaller videos. Trim long videos first.