DaVinci Resolve is a free video editor. Here are some useful shortcuts.
Navigation Commands
Up/Down Arrow = Move to next/previous clip. L = Play (forward) J = Play (reverse) K = Stop
Cut Video
Ctrl + Shift + [ = left ripple trim Ctrl + Shift + ] = right ripple trim Ctrl + b = split video (blade tool)
Time line
Alt + Mouse Scroll Wheel = zoom in/out the timeline. Shift + z = timeline fit in the screen
To convert video into Davinci Resolve supported format using ffmpeg, run
ffmpeg -i FILE.mp4 -vcodec mpeg4 -acodec libmp3lame -f mov FILE.mov
Or
ffmpeg -i FILE.mp4 -c:v libxvid -force_key_frames "expr:gte(t,n_forced*1)" -r ntsc-film -b:v 250000k -c:a pcm_s16le FILE.mov
When I converted a 66 MB mp4 video using the above FFmpeg command, the resulting file size was 1.1 GB
Convert audio
ffmpeg -i FILE.ogg -c:a pcm_s16le FILE.wav