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Premiere System - Dolby encoded audio output as PCM5.1 for SD video

Substance

Well-known member
⭐️⭐️PATRON⭐️⭐️
I noticed on my M700 if the video output is 480i (DVDs), the audio is output as PCM5.1 (decoded) for any Dolby encoded audio soundtrack. If I select the video output as 1080p (in the settings) then the audio is correctly output as DD5.1 (bitstream). I also noticed if I select passthrough for the video output, some SD DVDs are correctly output as 480i but some SD DVDs are output as 1080p. Is there any chance of these bugs getting fixed? I am hoping to use my M700 in a transport mode and have my Lumagen Radiance Pro handle all video and my McIntosh SSP to handle all audio.
 
These are my settings in my M700.

Example: I am watching Stargate SG-1 Season 1 DVD which has Dolby Digital 5.1 as it’s core soundtrack. I get PCM 5.1 on my SSP when the resolution is set to 480i (or passthrough) but I get the correct Dolby Digital 5.1 on my SSP if I set the resolution to 1080p. Is this a bug in the system or I am doing something wrong? (Other than watching DVDs in 2021:)
 

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I've been rather surprised that SD downloads are running at 480i instead of 480p.

What happens when you set the preferred audio to DD instead of DTS?
 
These are SD DVD imports. I have never purchased any SD downloads. Are they encoded at 480p? DVDs are natively encoded at 480i in mpeg-2 but some of them have the progressive flags. I compared the deinterlacing in the M700 vs Lumagen Radiance Pro. M700 has heavy combing. The Radiance has nearly zero combing but less sharper. I think the DVDO VP50 is the king of SD deinterlacing. It handles all sort of weird cadences with minimal combing but super sharp. Older Radiance units with Gennum VXP aren’t too bad either.

I tried the preferred audio set to DD, it didn’t help unfortunately.
 
If you are still having this issue, I would suggest that you open a support ticket. If it's a bug, Support will escalate it to the engineering team internally so that it gets fixed.
 
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