Adobe hooks into system-wide codec installs only., nothing local (like VLC, some others).
It's not just AME, but anything Adobe.
You need to install the official unpatched
Huffyuv 32-bit codec into the 64-bit domain. (No, not the 64-bit codec, which silly enough only installs into the 32-bit domain. Also not the FFMPEG versions.)
MainConcept is the same.
See this post:
https://www.digitalfaq.com/forum/vid...html#post94709
I didn't link directly to it, because that thread has similar problems to yours, in case you need to read it.