Trickplay Nvidia Shield issue

[MisterAngelus 7]

I have been using Emby since 2017  have not gad ant complaints. I also have Plex and play with Jellyfin to see how the three are different Now I'm attempting to move the family to Emby completely but I have two things that I cant figure out

 

1.Trickplay -  I cant figure it out with Emby    Emby is making .bif files but I would like to turn off .bif files and replace them with Trickplay images But I cant figure out if that's even possible I read that I needed to go into the Emby app on the shield go into Setting ---> Playback and enable Trickplay but I cant find that option anywhere

2.  Movie Trailers -  This feature has not worked for a while on the android app it just goes to a bad YouTube link

Can anyone help me with either of these