Crop video file online for free#

You can download it for free on the App Store.

Step 1: Get Video Crop if you donвЂ™t already have it.

You can use it for iPhone, iPad or iPod Touch as well.

Why is it the best? Mainly, it is free and easy for everyone to use. While there are multiple apps you can use to crop a video on iOS, the best one to use is Video Crop.

Crop video file online how to#

How to crop a video on mobile iPhone Video Crop вЂ“ Trim & Cut Videos

Crop video file online Pc#

In this article, weвЂ™ll let you know how you can crop video on iOS, Android, PC and Mac. Whether it be cropping down from 8K to 4K or cropping an iPhone video to fit a vertical or square aspect ratio, there are many reasons you may need to crop. To crop the borders of a video using FFmpeg (top, bottom, left and right borders), use:ДЇfmpeg -i input.mp4 filter:v 'crop=iw-n:ih-n' output.Often times, you may need to crop an existing video to fit a different aspect ratio. Using FFmpeg to crop pixels from the video left and/or right or top and bottom borders You might also like: How To Download A YouTube Playlist And Convert It To MP3 Using youtube-dl (Command Line) In this case we're using the input width ( iw) as the x coordinate (to start cropping from the right), and 0 as the y coordinate (to start from the top). Let's look at a basic FFmpeg crop example in which we'll crop a square of 100 pixels from the center.Д¬rop 50% of the video width and 50% of the video height (which means the output video will be a quarter - 25% - of the input video), starting from the top right of the input video:ДЇfmpeg -i input.mp4 -filter:v 'crop=iw*(5/10):ih*(5/10):iw:0' output.mp4 It's just for preview / playback purposes. This doesn't modify the input.mp4 video in any way, and it doesn't produce a new video. You can preview (play) the video cropping without waiting for its re-encoding by playing it with ffplay (useful for quickly seeing if the crop region is correct), like this:ДЇfplay -filter:v 'crop=w:h:x:y' input.mp4 This may sound a bit complicated, but you'll see in the examples that's not the case so much (but of course, it depends on what you want to achieve). iw/2 for half the input video width, or ih-100 to subtract 100 pixels from the input video height).

FFmpeg gets the original input video width ( iw) and height ( ih) values automatically, so you can perform mathematical operations using those values (e.g.

This won't work with images, that's why you don't see a separate example with screenshot here

There is also an optional keep_aspect option that you can set to 1 to force the output display aspect ratio to be the same of the input (example usage: 'crop=100:100:0:0:keep_aspect=1').

The filter will automatically center the crop if x and y are omitted, so x defaults to (iw-w)/2, and y to (ih-h)/2.

output.mp4 is the new, cropped video file.y the vertical position from where to begin cropping, starting from the top of the video (the absolute top being 0).

x the horizontal position from where to begin cropping, starting from the left (with the absolute left margin being 0).

h the height of the output video (the height of the cropped region), which defaults to the input video height (input video height = ih, with in_h being another notation for the same thing) out_h may also be used instead of h.

w the width of the output video (so the width of the cropped region), which defaults to the input video width (input video width = iw, which is the same as in_w) out_w may also be used instead of w.

'crop=W:H:X:Y' means we're using the 'crop' video filter, with 4 values:.

-filter:v (can be abbreviated to -vf) specifies we're using a video filter.

-i input.mp4 specifies the input video ( input.mp4 being the input / original video in this case).

To crop a portion of a video using FFmpeg, the command looks like this:ДЇfmpeg -i input.mp4 -filter:v 'crop=w:h:x:y' output.mp4 At its core is the FFmpeg command line program, which can be used for transcoding, basic editing, video scaling, and post-production effects. FFmpeg is a free and open-source project consisting of various libraries and programs for handling video, audio, and other multimedia files and streams. To be able to use these commands, you'll need to have FFmpeg installed on your system. This is possible because the same commands can also be used to crop. For each example command, the image is cropped using the actual FFmpeg crop command from that example, so you can see exactly what happens when using it.