If this file has stuttering, audio sync issues, or missing subtitles, look for a REPACK or a PROPER release from a group like CAKES or NTb .
The group is a known P2P (Peer-to-Peer) release group. While they are prolific, their releases are often scrutinized for the following: doom.patrol.s04e02.1080p.web.h264-glhf.mkv.mp4
A file cannot natively be two containers at once. If this file has stuttering, audio sync issues,
The filename contains several irregularities that suggest it is an "improper" or poorly labeled release. In the scene and P2P community, a "PROPER" report is issued when a release violates quality standards or naming conventions. Technical Flag: Double Extension The filename contains several irregularities that suggest it
They typically release in .mkv . The presence of .mp4 at the end of this specific filename is likely a user-end error or a "repack" by a third party.