Rename preset:
For reference, the rename script (JScript):
function OnGetNewName(getNewNameData)
{
var mkvName = "";
var dir = DOpus.FSUtil.ReadDir(getNewNameData.item.path);
while(!dir.complete)
{
var item = dir.Next();
if (item.ext.toUpperCase() == ".MKV")
{
if (mkvName == "")
mkvName = item.name_stem;
else
return; // Too many MKV files.
}
}
if (mkvName == "")
return; // No MKV file.
return mkvName + ".ENG" + getNewNameData.newname_ext;
}