Quoting DarklyNoon:

Quote:
But with the knowledge that 2-Chan Stereo in cinema is non-existing, I really do not see what the problems are.

cheers
Donnie

So you believe. Next you will be telling us that Mono does not exist in Modern cinema either.

Quoting Mithi:

Quote:
Quoting DarklyNoon:

Quote:
Commentary tracks always use the film soundtrack in the background, and as this is always Surround, the commentary track is also surround

Faulty logic.
Even IF they use the film soundtrack as a background, this says nothing on how it got mixed in. The commentor might just as will sit in a booth with a single microphone and watch the movie on a simple TV set. Pray tell how would there be anything more than "mono" possible?

On Tartan's release of Perth, the commentary was recorded in a closet for acoustics as the director watched the DVD on a laptop (IIRC).

It easy to tell the difference. You put the disc in the player, make sure your receiver is in pro-logic mode and see what happens.

This was said by a user called schaumi here a few months ago. it explains everything perfectly:

To find out the real 2.0 sound format on a DVD or Blu-ray is not always simple. Often the producers of the discs do not know either the true format of their programs, nor do most computer programs like PowerDVD and others. That results in often misleading logos on the cover and/or display on amplifier or PC screen. There is indeed only one reliable way to find out what is really on the discs: Listen and think!

The 2.0 mono programs are quite easy to unmask. Simply activate the DOLBY ProLogic mode on your amplifier. If only the center is audible, it is definitely a mono signal. (If the signals are not splitted precisely, there may come a minimal portion of sound out of the left and right speakers but hardly audible because of the dominance of the center signal.)

If left and right speaker are obviously audible, is it either stereo or Surround. To find out which is which is a bit more tricky. That is because on their way through the ProLogic matrix all stereo signals send also sound information to the rear speakers (and to the center). Even simple stereo audio CDs send accidentally signals to the back, as soon as the ProLogic matrix is activated. From now on you have to use your brain.

Possibility 1: The template was a feature film that was originally made for cinema distribution. Then it cannot be simple two-channel-left-and-right-stereo. In cinema there was never pure two-channel-stereo! Since the invention of the talkies 1927 there was always a center channel (and still is there until today). A feature film for cinema is either in mono or has four or more sound channels.

(One exception: In the 50's there was actually a triple track format (L,C,R), which today is history. You can find it e.g. on the DVD of Billy Wilders The Seven Year Itch. A list of feature film sound formats you may find by clicking the following link: http://www.mtsu.edu/~smpte/table.html.)

Possibility 2: The program was produced directly for TV or is it a music video or music documentary or concert footage, there is indeed the chance of real two channel left-and-right stereo which should be listened to favoured in stereo mode on your ampflifier as well as it can be DOLBY SURROUND (which then normally is indicated in the titles and/or on the cover). Anyway, here you have to rely on the information on the cover, on the disc or in the titles.

Keeping that in mind, you can ascertain the following at least for cinema related features on DVD and Blu-ray when 2.0 sound is stated: Is the sound coming just out of the center (with activated ProLogic mode), it is obviously a mono program. In all other cases we have matrixed four channel sound, on DVD usually called DD 2.0 Surround.
A useful hint is also the DOLBY STEREO logo in the end credts which points to matrixed four channel Surround sound.) 2.0 stereo is only possible for not cinema related programs such as TV series or music content.

cheers+
Donnie

They are only surround if they have the out of phase information. Just because cinema has 4 channels doesn't mean all sound tracks had the 4 channels since many dubbed tracks were intended for VHS playback, TV broadcast or done on the cheap for a limited market. BTW linking to this thread is not a source for changing all stereo dubbed tracks to surround. If the disk claims its stereo then you'll need a source to say the disk is wrong.

Wow, he cannot provide a relevant argument, so he insults anyone who disagrees with him. Classy.

Be careful voting no, this is the latest PM Darkly sent me for daring to disagree with him and voting no:
Quoting DarklyNoon:
Forum Moderator: Removed. Do not quote PMs in the forum.
unbelievable, and more than a little sad

Posting PMS in the forum will surely get you banned now, what already should get you banned is to add Blu-Rays to your collection just to be able to vote NO to my contributions.

Oh yeh , it is fun to finally payback those bullies that made this forum hell for 98 % of all the users.

keep it coming guys.

cheers
Donnie