My quesstion is when backing up various DVD's in my collection I noticed in the audio menu I have various listings of sound formats which take up a lot of space. Between DTS 5.1 , AC3 5.1. and AC3 2 channel which is the better of the 3. I've also noticed the multiple listings of the same format as well with both listings having the same audio size. Do I need all of these since I've noticed the compression was less as I removed something such as (2) listings of directors comments with both listings being the same size and same format.
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