#OSX FFMPEG INSTALL HOW TO#
#OSX FFMPEG INSTALL INSTALL#
#OSX FFMPEG INSTALL MAC#

If you know the input video dimensions i.e, the video width is 300 and height is 200. As we have not specified the values of x and y, the cropping will start from the center of the video. And divided both by 2 to specify that we want the cropped video to be of half-width and height as compared to the input video. In the above command we have used in_w instead of w and in_h instead of h. The command to perform this task will look like this: ffmpeg -i input.mp4 -filter:v 'crop=in_w/2:in_h/2' output.mp4 Let’s say we want the cropped video to be of half the width and height as compared to the input video. Instead of specifying the literal pixel coordinates to crop a video, we can also use variables to denote the video parameters. In case we do not specify the values of x and y, the cropping will start from the center of the video. The command with filled-in parameters to do this will look like this: ffmpeg -i input.mp4 -filter:v 'crop=100:100:100:200' output.mp4 We want the input video cropped 100 pixels from the left and 200 pixels from the top. Let’s assume we want to crop a 200×200 portion of a video from the center. This parameter does not work with images which is why it was not mentioned in the section earlier.

To use this with the whole command just add the parameter after specifying crop dimensions like 'crop=100:100:0:0:keep_aspect=1'. There is an additional option available represented by keep_aspect that you define to 1 to keep the output video aspect ratio the same as the input video.

output.mp4 is the cropped output video.

If x and y are not specified, the default crop will start from the center.

y specifies the vertical position starting from the top, from where the cropping will start.

x specifies the horizontal position starting from the left, from where the cropping will begin.

If output height is not specified it will default to input height or in_h. If w is not specified the command will default to the input width or in_w.

'crop=w:h:x:y' specifies that we are using the crop filter which takes in 4 values to determine the dimensions and length of the output video.

-filter:v specifies that we are using a video filter.

-i is specifying the input video that will be cropped.

This command is the same as the one used for cropping images we have just changed the input and output to mp4. ffmpeg -i input.mp4 -filter:v 'crop=w:h:x:y' output.mp4 Below mentioned is the general structure of the command. Let’s first look at the command that is used to crop videos using pixel coordinates and then discuss that in-depth.

#OSX FFMPEG INSTALL HOW TO#

Now let’s see take a look at how to crop videos using the FFmpeg tool. ffmpeg -i input.png -vf 'crop=10:10:0:0' input_crop.pngĪfter execution this command will generate the following picture by cropping a square box of 10×10 dimensions from the top left corners of the picture. The above-mentioned command will look like this after putting in our desired dimensions.

input_crop.png is the new cropped image.Īs an example, we have the following image and we want to crop a square of 10 pixels from the top left corner of the image.

If x and y are not specified, the command will default to start cropping from the center.

'crop=w:h:x:y' specifies that we are using the crop video filter where w is the width you want after cropping the image, h is the height of the cropped image, x is the horizontal position from where the cropping starts and y is the horizontal position from where the image cropping starts.

-vf specifies we are using a video filter.

-i is the input parameter and input.png is the input image that we want to crop.

ffmpeg -i input.png -vf 'crop=w:h:x:y' input_crop.pngįirst, we will take a look at what each of these parameters means to help us better understand how to use this tool. The same command can be used to crop videos after minor tweaks so pay attention to what each parameter in it represents. Below mentioned is the command that is used to crop images. Cropping Images using FFmpegįFmpeg tool can be used to crop images. So if you pay attention to how to crop photos using FFmpeg, you will not have a hard time understanding videos. Bear in mind that the command for cropping images and videos is almost the same.

Now let’s take a brief look into how to crop images using the FFmpeg tool and then we will dive right into the video.

#OSX FFMPEG INSTALL INSTALL#

To install FFmpeg tool on Redhat/ Centos Linux systems run the following command: yum localinstall Debian-based Linux Distributionsįor Debian-based Linux distributions run the below script to install FFmpeg: sudo apt install ffmpeg Redhat/ Centos based Linux

In this tutorial we’ll quickly mention how to install it on Linux.

#OSX FFMPEG INSTALL MAC#

Note: You can install FFmpeg on Linux, Windows or Mac OSX. Cropping black borders using the FFmpeg toolįirst, we will take a look at the command to install the FFmpeg tool.

Osx ffmpeg install