Okay, as far as prefererence, I'll leave at 16:9 Normal, I can always stretch if I want to fill the screen.
I did notice last night that I had black bars at the top and bottom with a BD movie. I could stretch it to fill the screen, but I guess it was supposed to look like that, right?
As far as the Bitsream vs. PCM, here is what I found last night:
I tried a disk last night, it was Twilight (for my 12 yo daughter). The audio track was DTD-HD Master 5.1 Channel. Wish it had more to experiment with, but alas that was what I had to work with.
I had the audio on the BD set to PCM. It output the signal as 7.1 Multichannel PCM. I could not choose anything else (meaning post processing setting or listening mode so to say) on the receiver except stereo or the 7.1 Multichannel PCM. Seemed to read 48KHz if that means anything. Which, according to that daunting chart I mentioned yesterday regarding my AVR, I can only take a 7.1 Multichannel PCM stream and listen in Stereo or Multichannel, so that makes sense.
When I changed the setting on the BD to Bitstream Audiophile, it showed up on my receiver as receiving a DTS-HD Master signal, 48KHz. All the lights went on on the receiver induicating this and the post processing (setting that I listen to the sound in) was DTS-HD Master 5.1. I could choose others as well if I wanted to. According to the manual on the AVR, and the chart I mentioned, I can listen to that in Stereo and DTS-HD Master audio, so, that makes sense.
Seems to me that I had more choices with the Bitsream signal. Seemed the PCM gave me no choices to change in around. Was I listening to the same audio or was one difefrent than the other?