I have re-ripped all of my movies for the new aTV, except for Lord of the Rings extended edition. I just merged the 2 discs from Fellowship of the Ring using MKVMerge. Everything went well except for 2 things. 1) there are a few black frames between the 2 disc merge and 2) the Chapters are not numbered sequentially. Does anyone have a recommendation on the best way to remove the black frames from the middle of the merge (using Mac) and to rename the Chapters so the numbers are sequential?