Well, this is *old* Smacker (3.0) settings:

Добавлено:
Already compressed AVI may be not so suitable for some reasons (color depth, frame rate, compressed audio streams). But you can try it (with new version of Smacker). But don't use Bink audio compression, game can't read it properly. And if you use new Smacker, you will need to update SmackW32.dll in "Heroes" folder.

Quote:ERM help says as well that only AVI are able to play, so smk/bik will not play. Is it true?

If you want use ERM to play video, I think it must be uncompressed avi. May be CoreWoG Team can do something with this, I don't know. Smk files may be used to replace the old ones.