ffmpeg install and use to reduce/compress video file size
Installing free https://www.ffmpeg.org/ and reducing a mp4 video file size. Reducing the size of a video file
The command I used doesn't work for files over 1Gb
ffmpeg -i originalvideofile.mp4 -c:v libx265 -c:a copy -crf 25 outputfile.mp4
Here 25 is the output quality, higher number, lesser quality
Other commands
ffmpeg -i input.mp4 -s 1280x720 -acodec copy -y output.mp4
ffmpeg -i input.mp4 -vcodec h264 -acodec mp2 output.mp4
ffmpeg -i input.mp4 -vcodec h264 -b:v 700k -acodec mp3 output.mp4