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SwatDB · 2025-08-17, 07:19 AM

How many 4.1 or 5.1 mixes on LD, DVD or BD out there have mono surrounds?

JB316 · 2025-08-17, 08:22 AM

4.1 in a 5.1 container? - A massive amount, im sure. But I was wondering specifically how this point break DVD 4.1 in the opening post, is in an AC3 container?
AC3 doesnt seem to support a simultaneous LFE and single surround rear channel. As far as i can see.
I was looking to encode it back to AC3 4.1 after editing.
I was really asking OP if he omitted one of the rear surround tracks as they would have been identical ?

Hydra Spectre · 2025-08-18, 08:03 AM

(2025-08-17, 08:22 AM)JB316 Wrote: 4.1 in a 5.1 container? - A massive amount, im sure. But I was wondering specifically how this point break DVD 4.1 in the opening post, is in an AC3 container?
AC3 doesnt seem to support a simultaneous LFE and single surround rear channel. As far as i can see.
I was looking to encode it back to AC3 4.1 after editing.
I was really asking OP if he omitted one of the rear surround tracks as they would have been identical ?

Not sure if it's supported on DVD, but it is on BD. Ailen and Aliens both have DD 4.1 mixes on Blu-ray in addition to DD 2.0 and DTS-HD MA 5.1.

JB316 · 2025-08-18, 09:16 AM

(2025-08-18, 08:03 AM)Hydra Spectre Wrote:
(2025-08-17, 08:22 AM)JB316 Wrote: 4.1 in a 5.1 container? - A massive amount, im sure. But I was wondering specifically how this point break DVD 4.1 in the opening post, is in an AC3 container?
AC3 doesnt seem to support a simultaneous LFE and single surround rear channel. As far as i can see.
I was looking to encode it back to AC3 4.1 after editing.
I was really asking OP if he omitted one of the rear surround tracks as they would have been identical ?

Not sure if it's supported on DVD, but it is on BD. Ailen and Aliens both have DD 4.1 mixes on Blu-ray in addition to DD 2.0 and DTS-HD MA 5.1.

Yeah, that seems to be the case.
I sent the surround track to both rear channels and just encoded as 5.1. The odd thing is that my receiver identified the opening post original audio as 4.1. maybe just some header information or something?
Odd how Blu-Ray.com even lists it as 4.1. https://www.blu-ray.com/dvd/Point-Break-DVD/2631/

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