User17749664309966079180 (Erich-Thienhaus-Institut Detmold) asked a question.
Channel Order of a 7.1.4/7.1.2 multichannel interleaved Re-Render is not SMPTE?
Can someone please explain to me why the Dolby Atmos website always uses the SMPTE channel order, but when exporting a 7.1.4 multichannel interleaved file, the surround side and surround rear channels are swapped? Maybe I did something wrong, but I’d really love to know if there’s a reason for this. Thanks in advance!
as you said, Dolby Atmos follows the SMPTE channel layout because it is the modern cinema and broadcast standard. However, some DAWs and multichannel export formats still use legacy Film order, which is why the surround side and rear channels can appear swapped. I would recrommend monitoring through the Dolby Atmos Renderer ensures playback matches your intent.
Best,
Heesuk
I understand that if I create a re-render using, for example, Pro Tools’ internal DA renderer, the channel order used is Pro Tools’ default (is that what you mean by “legacy film”? L, C, R, Lss, Rss, Lsr, Rsr, Lfe + top speakers).
But when I load a DA master file using the standalone DA Renderer and then export a re-render from it, the channel order isn’t SMPTE, but (as far as I know) EBU-TECH3285: L, R, C, Lfe, Lsr, Rsr, Lss, Rss + top speakers. A look at MediaInfo also confirms my observation. That’s the point that confuses me. As far as I know, there’s no way to change the channel order to SMPTE when exporting re-renders, is there?
In the end, it doesn’t really matter, but it’s good to know so there’s no confusion.