Below are practical FFmpeg commands tailored to this file. See codec, resolution, bitrate, and audio streams.
The episode is:
ffprobe Outlander.S04E07.mkv Keep good quality but shrink a 4-5GB episode to ~1.5GB. outlander s04e07 ffmpeg
ffmpeg -i Outlander.S04E07.mkv or more detailed: Below are practical FFmpeg commands tailored to this file