Different Audio Handling in PPro2?

[Jacob Rosenberg]

You can’t capture un-muxed stereo, but you can change the mapping of the audio so that a stereo clips drops into the timeline as two mono clips on top of each other. The new feature is called Source Channel Mappings and it can be assigned a keyboard shortcut to get to the dialog. In the dialog, you can change the source mapping of any audio file to make a stereo file recognized as two mono files (it looks the same in the project panel) or you can turn off one or more of the tracks and have a stereo file recognized as left channel mono only.

jacob

http://www.premiereprotraining.com
http://www.formikafilms.com
http://www.d2gfilm.com

[Herb Sevush]

Jacob –

You said –

“In the dialog, you can change the source mapping of any audio file to make a stereo file recognized as two mono files”

Can these 2 mono files be edited independently of each other.

Herb Sevush
Zebra Productions

[Jacob Rosenberg]

Yes.
If you have a Video clip with Stereo audio, you drop it into:

V1 – XXX
A1 (stereo)- XXX

Once you remap the source audio you drop it into the timeline and it looks like this:

V1 – XXX
A1 (mono) – XXX
A2 (mono) – XXX

And now each channel is linked to the source video, but is on its own independent track. Again, this is not too documented in the press release, but its in there and boy is it great! Especially, when you disable the audio of a source clip that you want to be video only all the time.

jacob

http://www.premiereprotraining.com
http://www.formikafilms.com
http://www.d2gfilm.com

[Ron Shook]

Jacob,

First, thanks for your taking the time on all these threads.

Secondly, to be upfront about my presuppositions when I ask questions, I’m primarily concerned with two things, are the operations mappable to keystrokes, and how many operations of what type (noodly mouse clicking or keystroke) are necessary to make it happen.

[Jacob Rosenberg] “You can’t capture un-muxed stereo, but you can change the mapping of the audio so that a stereo clips drops into the timeline as two mono clips on top of each other.”

“Two mono clips on top of each other,” is hard for me to conceptualize. What does it take to edit and adjust these on the timeline as discrete mono channels, particularly the one that is on the bottom. (g) My first thought was that it would be much easier to just capture the clips in whatever audio format you needed, but on second thought, I realized that in a few years we probably will do little capturing except for legacy stuff, just ingesting from media for file importing, so it makes sense to make the changes after the ingest or import.

[Jacob Rosenberg] “The new feature is called Source Channel Mappings and it can be assigned a keyboard shortcut to get to the dialog.”

And once you are in the dialog are there keystrokes for determining the choices you make?

Once you make your choice on a master clip, does this follow into any subclips you might make from the master clip?

If the workflow on a particular project calls for scene detection during capturing and you want every clip from a source tape or file to be mono channels on the timeline, is there any way to batch this after capture or import of clips or do you have to change every clip separately?

Sorry for all the questions, but I want to determine how much the audio handling is fixed. Could be anywhere from from 40-90% fixed, depending on the anwers, IMO?

Ron Shook

[Jacob Rosenberg]

Source Channel Mapping is a dialog that opens with an assignable keyboard shortcut and then there are controls that you have to click.

[Ron Shook] “And once you are in the dialog are there keystrokes for determining the choices you make?

Once you are in the dialog, you have speaker icons for each of the channels (you can swap them or turn them off or leave them as is), you also have a check box to remap the clip as stereo, mono-stereo, mono or 5.1 surround. I have screen caps from my book, but I don’t have that much time to go through and post them.

Once you make your choice on a master clip, does this follow into any subclips you might make from the master clip?

You must turn on the Remapping before you edit with the clips and then all subsequent children of the master will adhere to the settings. You cannot remap audio clips that have already been added to the timeline.

If the workflow on a particular project calls for scene detection during capturing and you want every clip from a source tape or file to be mono channels on the timeline, is there any way to batch this after capture or import of clips or do you have to change every clip separately?

You cannot run a batch process, but as long as all the captured clips have the same captured audio settings, you can select all the clips and execute the same remap on the ones selected.

Sorry for all the questions, but I want to determine how much the audio handling is fixed. Could be anywhere from from 40-90% fixed, depending on the anwers, IMO?”

Hope that helps. This feature allows you to capture a clip in stereo (or mono) and have the clip show up as it would in the project panel, with Audio and Video mixed. Once you change the source channel mappings to Mono, when the clip is added to the timeline, it requires two mono tracks to display the stereo audio. Both the mono clips are linked to the video so if you were to edit or trim one of them, you would want to “alt” trim so that it remained linked, but didn’t trim the other elements.

jacob

http://www.premiereprotraining.com
http://www.formikafilms.com
http://www.d2gfilm.com

[Mike Cohen]

Jacob,

My paradigm for separate stereo tracks linked to the video is Media 100 – in there, if you capture video with stereo audio, you can assign during capture the panning and timeline track assignment of each audio track –

and then between the bin and the timeline, you can designate which audio track in the clip will go to which audio track on the timeline

then on the timeline you can adjust the level of each audio track or both together, and adjust the panning of each track – so you can pan the left track to the right and vice versa, or pan to the middle – so each “mono” track of the stereo pair is not limited to the original L-R position.

You can also unlink the tracks, make adjustments individually, and then re-link them.

Any of this translate to PPro 2.0?

Thanks for all your expert posts on the new features.

Mike

[Ron Shook]

Jacob,

[Jacob Rosenberg] “Hope that helps.”

Yes, very much!

[Jacob Rosenberg] “Once you make your choice on a master clip, does this follow into any subclips you might make from the master clip?

You must turn on the Remapping before you edit with the clips and then all subsequent children of the master will adhere to the settings.”

Great! As long as there is a way to do it. If I forget to turn on remapping, it’s on my head.

[Jacob Rosenberg] “If the workflow on a particular project calls for scene detection during capturing and you want every clip from a source tape or file to be mono channels on the timeline, is there any way to batch this after capture or import of clips or do you have to change every clip separately?

You cannot run a batch process, but as long as all the captured clips have the same captured audio settings, you can select all the clips and execute the same remap on the ones selected.”

Good, if I follow you correctly, I would call that a batch process of sorts and just the sort of thing I’m looking for. Not that this is the sort of procedures that I’m used to, but it sounds quite workable. with the increased knowledge, I’m now up to seeing the audio handling as 65-90% fixed. (g) It’ll never get to 100% without the ability to legacy capture or import with 2 discrete mono tracks, but it seems fairly quick and easy to make the changes after the capture or import, except for the lack of mappable keystrokes once in the remapping dialog.

Like Mike, I’m still wondering about the panning. If you capture or import with a stereo setting, I assume that ch1/left is panned full left and ch2/right is panned full right? If you change the mapping to stereo-mono and get two discreet channels is the panning centered on these 2 channels as it should be to start working with them?

We’re doin’ OK. No major disappointments and some admiration in this audio arena…so far.

Ron Shook

[Jacob Rosenberg]

In the Source Channel Mappings there is a check box for Mono as Stereo. If you map stereo audio in this manner you will get two stereo tracks for your clip, one of the Left channel panned evenly and one of the right channel panned evenly. YOu can then, pan those any way you want in a stereo mix.

You cannot auto-designate the end track selection, but you can split the channels and preserve the stereo-ness to tweak to your likings.

I hope that helps

jacob

http://www.premiereprotraining.com
http://www.formikafilms.com
http://www.d2gfilm.com

[Jacob Rosenberg]

[Ron Shook] “Like Mike, I’m still wondering about the panning. If you capture or import with a stereo setting, I assume that ch1/left is panned full left and ch2/right is panned full right? If you change the mapping to stereo-mono and get two discreet channels is the panning centered on these 2 channels as it should be to start working with them?

We’re doin’ OK. No major disappointments and some admiration in this audio arena…so far.”

Yes if you process Mono as Stereo the individual channels are stereo-ized center panned. I mentioned another Audio feature EXTRACT which pulls the audio from an AV file so that you can deal with the Audio Only. I also think that the confirming model took a step forward in that you now have a media database that tracks every audio file that has been conformed so that as long as the path of your audio files remain the same if you were to import a 32kHz audio file into a 44kHz project if the 44kHz conformed version already exists, it will use that file for the new import. Basically the model is that you should only have to COnform audio once to any rate that requires conforming. Maybe that’s too confusing. I can expand if anyone is interested.
jacob

http://www.premiereprotraining.com
http://www.formikafilms.com
http://www.d2gfilm.com

[Ken Adolph]

I have looked everywhere and can’t find this checkbox for Mono as Stereo.
Do you have a hint?

Ken Adolph
Media Group
Editor/Post Supervisor
https://www.mg.ca