The Best 7 Video Resizers for Linux
https://www.sysgeeker.com/blog/the-best-7-video-resizers-for-linux-resize-your-videos-with-ease.html

How to Crop and Resize a Video Using FFmpeg
https://www.sysgeeker.com/blog/the-best-7-video-resizers-for-linux-resize-your-videos-with-ease.html

On line Video Compressor
https://www.freeconvert.com/video-compressor
https://invideo.io/tools/compress/video-compressor/

How can I reduce a video's size with ffmpeg
https://unix.stackexchange.com/questions/28803/how-can-i-reduce-a-videos-size-with-ffmpeg

How to extract images from video file?
https://unix.stackexchange.com/questions/185877/how-to-extract-images-from-video-file

wmctrl -r Firefox -e 0,110,15,1450,1030

Anyone knows a good way to resize any window to for example 640x480?

Reason is, of course, screencasting.

Under windows I've used ZoneSize from donationcoder. (Btw: For Firefox it's easy, just us...

Use the wmctrl command:

To list the windows:

$ wmctrl -l
0x00c00003 -1 rgamble-desktop Bottom Expanded Edge Panel
0x00c00031 -1 rgamble-desktop Top Expanded Edge Panel
0x00e00022 -1 rgamble-desktop Desktop
0x0260007c 0 rgamble-desktop Google - Mozilla Firefox

To resize a window based on its title:

wmctrl -r Firefox -e 0,0,0,640,480

The arguments to the resize option are gravity,X,Y,width,height so this will place the window at the top-left corner of the screen and resize it to 640X480.

iLoveIMG is the webapp that lets you modify images in seconds for free. Crop, resize, compress, convert, and more in just a few clicks!

How to Easily Crop and Resize Images in Linux
https://www.makeuseof.com/tag/easily-crop-resize-images-linux/

If you want to do some basic cropping and resizing on Linux -- perhaps to help with a project or make an image easier to upload to your favorite social networks -- then try these tools.