ffmpeg -i "Fifty.Shades.Darker.2017.1080p.mkv" -c:v copy -c:a aac -movflags +faststart output.mp4
A former "submissive" of Christian who begins stalking Ana due to a psychological breakdown.
: The file extension. Matroska Video (MKV) is a universal container format. It is popular because it can hold unlimited video, audio, picture, or subtitle tracks within a single file. 2. About Fifty Shades Darker (2017)