Cant play mkv files

[Fabio72]

all my sources are NFS
I'm also using NFS root
no problem at all

All mounts are system mounts through fstab

exports

Code:

/nfs4exports/Videos      192.168.1.0/24(rw,nohide,async,insecure,root_squash,no_subtree_check,anonuid=1000,anongid=10​0)

uid 1000 and gid 100 are local user owning files on my server

fstab

Code:

192.168.1.8:/nfs4exports/Videos   /Videos   nfs    rw,nolock,async,nfsvers=3,actimeo=0,udp,soft,intr,rsize=32768,wsize=32768,n​oatime 0 0