The file name indicates specific technical quality for the digital copy:
This is the most critical part of the keyword. , also known as H.265 , is the successor to H.264 (x264). The 100 Season 4 S04 720p HDTV x265 HEVC Comple...
Use ffmpeg -v error -i file.mkv -f null - (advanced) or just try seeking to the last 5 minutes in VLC – if it doesn't crash, it's fine. The file name indicates specific technical quality for
For S04 (13 episodes @ 42 min each):