sudo npm install -g videogorillas/vidcom
vidcom /path/to/video1.mp4 /path/to/video2.mp4 [/path/to/subtitles.srt]
vidcom generate /path/to/video1.mp4 /path/to/video2.mp4 [/path/to/subtitles.srt]
fn - initial frame
url1, url2 - video urls
srt - subtitles url