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3F2M/LFE vs 3F2R/LFE - Why won't it decode as Dolby Digital?

Posted: 07 Oct 2017 03:58
by sugarpump42
What is the new the "3F2M/LFE" that I see appearing under the audio codec stats in the latest videos?

My Marantz decoder will not decode this as Dolby Digital like it does 3F2R/LFE. It defaults to Dolby Pro Logic II. I know 3F2R/LFE stands for 3 front speakers, 2 rear, and the LFE channel (5.1).

But does the "2M" mean in 3F2M/LFE?

Why won't this decode as Dolby Digital?

Tried both 2.2.6 and the latest nightly build (vlc-3.0.0-20171006-0452) on a MacBook Pro Laptop.


Type: Audio
Codec: A/52 B Audio (aka E-AC3) (eac3)
Language: English
Channels 3F2M/LFE
Sample rate: 48000 Hz
Bits per sample: 32

Re: 3F2M/LFE vs 3F2R/LFE - Why won't it decode as Dolby Digital?

Posted: 07 Oct 2017 09:10
by RĂ©mi Denis-Courmont
3 front, 2 middle

Re: 3F2M/LFE vs 3F2R/LFE - Why won't it decode as Dolby Digital?

Posted: 12 Oct 2017 22:49
by smhealey

Re: 3F2M/LFE vs 3F2R/LFE - Why won't it decode as Dolby Digital?

Posted: 16 Oct 2017 14:23
by InTheWings
You file is signaling 5.1 with side channels. Blame your hardware.