![]() While resizing a video & retaining the aspect ratio, we need to set the parameters in a particular way i.e, to set either the width or the height to -1.įor example- we set the width to -1 and then set the height and vice versa. if the width of the image is x unit and the height is y unit, the aspect ratio would be x : y. The aspect ratio means the ratio of the image’s width to its height.įor e.g. To be able to maintain the aspect ratio whilst changing the resolution can be difficult. ![]() To rescale videos with ease, you’ll have to follow this command:įFmpeg -i input.avi -vf scale=320:240 output.avi 3. $w & $h here, indicate the necessary width and height. Enter the following command to resize videos: FFmpeg -i input.mp4 -vf scale=$w:$h output.mp4 ![]() Select the ‘Scale’ filter from the Effects section of FFmpeg. Let’s look at how we can do the following in FFmpeg: 1. Ffprobe -v error -select_streams v:0 -show_entries stream=width, height -of csv=s=x:p=0 input.mp4
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