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5.1 AC3 output in CS3 using surcode
Hi,
We are trying to encode a 5.1 AC3 file from Premiere Pro CS3. We have bought the Surcode plugin which has worked great for stereo files but as yet we have not made any 5.1.
My question is as follows:
We have been supplied 6 discrete mono wav files which we need to sync up with our stereo capture and create a 5.1 AC3 for DVD video.
The syncing is fine but when we need to output the 6 mono channels as a 5.1 AC3 it is difficult to assign each audio track to a discrete output channel without any mixing occuring.It seems straight forward to use the ‘puck’ to pan the front left channel, rear left channel etc. The only issue I have is the LFE channel. It does not have a slot to pan to. I have cranked the ‘bass clef’ dial up to the max(it is on zero for the other channels) but looking at the master output the audio is being sent to all of the channels as well as the LFE channel.
How can I make sure the LFE track is assigned to a dicrete output and not mixed accross some of the others?
Also, in a seperate issue, do I need to make sure my Audio output mapping is in the same order as the surcode encoder expects i.e.
L,R,C,LFE,Ls,Rs..Any help would be greatly appreciated…. Whats wrong with good old DA88 tapes 🙂
Cheers
Chris
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7 Replies
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The Surcode plugin will not work for 5.1 audio in PPro 4.0, you will need to wait for the update that is expected sometime this month.
Cheers
Eddie -
I have the same issue and also my LFE track shows nothing in it when I view it’s graphical waveform in the timeline and shows no response in the audio mixer when playing back!
The tracks where mixed by another editor and this is my first 5.1 mix I’ve worked with. So should there be some movement in the indicator on the audio mixer when the LFE track plays back and where on earth do you place it on the 5.1 Panner?
Thx
Kevin
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Hi,
Are you sure about the surcode plugin. It has a 5.1 option in it?In any case, disregarding the plugin, I can always just play straight out of premiere via the Xena 2K card we have, straight into our hardware Dolby Digital encoder. The issue I have is that the LFE channel does not seem to be mapped to a discrete output. It seems to get mixed accross all of the channels depending on where it is panned.
My question is where can you pan this LFE channel so that it appears on one discrete output? I have tried having the ‘bass clef’ dial up at 100% and all the other channels at 0.
All of the other channels can be panned to discrete outputs as I understand it. It certainly appears that way in the master output.
Does anyone know how to resolve this?
Thanks again
Regards
Chris
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Hi Kevin,
Usually an LFE channel does not appear to have much going on in the waveform view as it only occurs at explosions and end credits etc. It may be that there is not much low frequency action happening in this mix. Either that or this is just meant to be a 5.0 mix.
With regards on where to pan this channel, that is the exact problem I am having. Hopefully someone will come to our rescue!Cheers
Chris
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Adobe really need to sort this out, I spent most of yesterday reading up in the Adobe help, tutorials and in forum posts and there is a huge amount of confusion and probably miss-information about 5.1. There needs to be a very clear tutorial on how to do this in Premiere. I was amazed that Adobe Audition 2 states it can do 5.1 but really it just exports them as either seperate mono tracks or for Windows Media Video and not proper Dolby Digitial whihc is what most of use want!
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[Kevin Boyd] “and not proper Dolby Digitial”
Audition can do 5.1 audio as advertised. Adobe does not say Audition can do Dolby Encoding so it shouldn’t come as a shock that Audition doesn’t do Dolby encoding.
You will find some useful information in the PremiereProPedia dealing with surround sound.
Cheers
Eddie -
Thanks Eddie I was about to say the same thing. Audition will do the 5.1 uncompressed WAV. Bring that into Encore and let encore convert the WAV into the ac3 there. I’ve had plenty of success with it and it sounds great.
The solutions are there in the workflow, just not all in the one place. ac3 is primarily muxed when authoring DVD so it makes sense that its done inside Encore.
People need to understand that one Suite of Apps will have one way of doing its workflow and another Suite (company) will do it another way. Learn the workflows and just accept they are different.Jon Barrie
aJBprods
http://www.jonbarrie.net
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