Quoting DarklyNoon:

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Here are two comments by two different users:

NO Vote: verified with Onkyo TX-SR607, no surround flag set on the commentary track.
YES vote: While I agree in principle with the "No" voters, I have checked & confirmed this has a surround flag.

We have two users here that both checked on my contribution.
One verifies it as correct the other verifies it as not correct.

As the "Yes" vote here, I can possibly explain how both could be correct. I only checked one episode & it's possible that the "No" also did the same. I've now gone back and checked the miniseries commentary & that is only stereo.

Quoting Graveworm:

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If in doubt stick to the rules is not a bad idea:
"Use the Audio specified on the DVD Cover unless you can verify there is a discrepancy between that and the actual Audio included on the disc. When contributing accurate, DVD based Audio, include your verification method in your Contribution Notes."

So if you can show that it isn't stereo please do so and include your verification method, otherwise leave it as it is on the box or the audio menu.

This rule doesn't help at all when it comes to commentary tracks. Their format is almost never listed on the cover.

Quoting Kinoniki:

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The format of commentary tracks (and bonus features in general) are often just listed as Dolby Digital 2.0 which isn't very helpful. That's why many of us simply enter stereo and forget about it.

On that note, it would be great if the programmers could just change the audio format in the program to simply "Dolby Digital 2.0" then. Then we wouldn't need discussions such as these...

Quoting cartman76:

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Quoting Kinoniki:

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The format of commentary tracks (and bonus features in general) are often just listed as Dolby Digital 2.0 which isn't very helpful. That's why many of us simply enter stereo and forget about it.

On that note, it would be great if the programmers could just change the audio format in the program to simply "Dolby Digital 2.0" then. Then we wouldn't need discussions such as these...

I would so love this

Quoting Kulju:

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Quoting Ace_of_Sevens:

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Quoting Kulju:

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Quoting Ace_of_Sevens:

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Can someone point me to some actual non-surround stereo recordings online or something that I can check on my receiver and see what happens?

Try any audio CD.

A lot of those are encoded surround. I suppose early stereo ones wouldn't be.

Audio CD's? I highly doubt that. Please give one example.
http://en.wikipedia.org/wiki/Red_Book_(audio_Compact_Disc_standard)

Still waiting....Please give me one example of audio CD with surround.

Quoting Dag Ove:

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Here's one I have - Dolby Surround encoded 

But I agree with you, they are really rare.

Isn't that SRS Circle Surround Sound, not Dolby Surround? As far as I know it is against the Audio CD standard for disc to include any other than two channel PCM. If it contains something else, it cannot have "Compact Disc Digital Audio" logo on it.

I'm trying to see if there's a way to force my receiver into Pro-logic I mode.

Document from Dolby giving fairly accessible explanation of how you DVD producers should handle Dolby Surround.

The bad terminology we frequently see (refering to two-channel as stereo) seems to be Dolby's fault. They are quite insistent that Surround tracks shoudl be properly flagged and labeled, but they also say not to try to extra 4.0 or 5.1 from a Dolby Stereo track and we know the studios have ignored this advice, so I'm not clear how good they've been at following the rest.

What I'm trying to determine is whether formats other than DD actually have a surround flag. It's certainly possible for them to have surround-encoded info. The Dolby Stereo system which started in the 1970s would have been analog or possibly PCM in some cases. You could compress this with any codec and it would still have the surround data, but I'm not sure if it would have a way of telling the receiver to decode it as such.