Playlist Video : no search during playback
When VLC play a an audio Playlist, you can search or filter during playback.
But it's not possible with Video Playlists.
Note : Waiting this feature, there is a "hack" way to do search : during Playback, do a Play as Audio mode, expand the mini player, so now you can use search. But there is an issue : the Play as Audio Icon is mixed with the search.