I can only confirm this:
abema.tv/video/ .. works fine for me (only free content tested)
abema.tv/channels/abema-news/ .. don’t analyse (at least without account)
You will find the mpd in StreamFab.log
[RFC.abema] Type_MPD: Get manifest mpd url: ...
You can download this manually and decrypt both with:
702e2a26507f5a4d96edaed3eec32d7a:70fbd458f616519cb54ca72d4d038c05
