Issues downloading DRMed YouTube movie

[ytdlhelp]

I am trying to download a DRMed YouTube movie from https://www.youtube.com/watch?v=7ePa0VGQpTE. I done the steps to get decryption keys, and if I got them correctly, they are

8e41ba1fa34f5b969de0aa93505fefa9:9ca54a96a361331c85ee9f9b777ef233
7d08c1c0aba35008ae733218927754f2:83e79ddd91f2212b8b61bfaaae5f1d55
94b1a29ffcbd5cca85a2ab55402aae01:c05a5cffd599327cdd48307d806fa83f

Tried downloading various formats with yt-dlp, however, Unix file utility always reports them as

MPEG transport stream data

and ffmpeg seems to not support decrypting such files. Meanwhile the demo Widevine file I was able to decrypt was

ISO Media, MP4 Base Media v1 [ISO 14496-12:2003]

.
mp4decrypt doesn't work on certain files (video only formats), creating empty output files. It has some output on files downloaded with "-f mp4", though the output is still not watchable. Though this way 1080p video is downloaded, and AFAIK they don't work on L3 (though I can't confirm as for some reason Widevine videos always return an error in my browser).
What I am doing wrong, and how do I decrypt the video correctly?

[ytdlhelp]

Actually I just had to switch the client from ios to web, and everything started working correctly. So this thread can be locked or deleted, together with my account, as I don't intend to post anything else.