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5.1 routing in quicktime

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Andrea Hofmann
5.1 routing in quicktime
on Oct 27, 2015 at 2:13:33 pm

Hi,

I have been doing some tests regarding export of quicktime/mp4 container - with different video codecs (H264/Prores) and 5.1 routing (PCM/AAC).

As far as I know these 5.1 routing standards exists:
LRCLFELsRs - DCI
LCRLFELsRs - Film

and in one or the other programm (I have tested Clipster, Compressor, MediaEncodeer etc), I found this type of routing CLRLsRsLFE especially attached to AAC. (and in Compressor also LRLsRsCLFE)

Has anyone more infos on these types of 5.1 routing attached to certain codecs/containers and types of players?
And who is responsible for the routing (metadata) in Quicktime (Quicktime itself, the type of codec I use or the programme I use) I am looking for more infos on this topic.

Also is it possible to mulitplex AC3 with video into one file (not via a videoplayer)? Or is it purely for DVD/BluRay authoring?

Thanks :-)
Andrea


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Craig Seeman
Re: 5.1 routing in quicktime
on Oct 27, 2015 at 8:03:22 pm
Last Edited By Craig Seeman on Oct 27, 2015 at 10:10:10 pm

You route the audio the way you need for delivery.

Telestream Episode has a Channel Mapper if you need.




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Andrea Hofmann
Re: 5.1 routing in quicktime
on Oct 28, 2015 at 6:54:29 am

Hi, thank you, but the thing I would like to know is, which type of routing shall I use for specific scenarios?
DCI = DCP
film = general use for filebased

but what about those other types of routing and where are their origins?
thank you :-)


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Mark Spano
Re: 5.1 routing in quicktime
on Dec 8, 2015 at 4:12:44 pm

It's simple really.

ALWAYS order surround channels this way:

1 - Left
2 - Right
3 - Center
4 - LFE
5 - Left Surround
6 - Right Surround

This is SMPTE specification for surround channel layout. Any other layout for surround channels is asking for trouble for the next person. Anyone working in production or post or projection is expecting this order, and when the channels aren't in this order, it's a guessing game. Any other "established" ordering was made before the SMPTE spec, and the SMPTE spec aimed at eliminating confusion.



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Andrea Hofmann
Re: 5.1 routing in quicktime
on Dec 8, 2015 at 4:33:00 pm

Hi,

thank you, yes I came to this conclusion too after excessive testing ;-)
Though it seems the routing type CLRLsRsLFE is really an AAC thingy and a combination of the player.
Yes best ist to stick with SMPTE routing.
Thank you


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