9 Replies Latest reply: Apr 4, 2012 3:39 AM by ryclark RSS

    Audition: making changes to two mono tracks acting as stereo?

    Velzz

      MODS: Firstly i would post this in the Audition forums but i cannot post there for some reason

       

      This is the first time I am really working with audio in a film (and Audition)  I ported a bunch of cilps/tracks in a work area over to Audition. Now the thing is that some video clips have two audio tracks assigned to them, i'm guessing these are two mono tracks acting as stereo? So I was thinking that if I highlight both clips, whatever effect I am doing to one clip in the window, like normalizing or taking out audio hiss is affecting both clips at the same time but i guess it isnt. So is there a way to affect both clips at once with the edits? Are these two tracks necessary? Apologies in advance for what are probably noob questions.

        • 1. Re: Audition: making changes to two mono tracks acting as stereo?
          nudomi

          Hi Velzz.... I'll take a stab at this.  Have used 1.5 for a long time, but am admittedly not an expert, and have found my own workarounds for such issues.

           

          I had a similar problem, but not with video.  I typically record acoustic guitar parts in mono (sometimes manually doubling) but more recently wanted to start doing stereo recording. I initially set up two separate mono channels (in Multitrack View) for the two mics, thinking that would give me ultimate flexibility later on for EQ, effects, etc, etc.  Only problem is that I also prefer to composite my tracks, not being a perfect player doing perfect takes.  I don't like to mess around with punch-ins, I just do multiple takes and create a composite track from the best takes.  Pretty common so I understand.  But... how to precisely edit two mono tracks of the exact same part?  In short, a lot of unnecessary surgical work (I'm sure someone out there knows the secret).  My workaround was to record into one stereo track instead of two mono, do all the editing necessary, then I can split the stereo L and R into two mono tracks (by copying and pasting L and R into separate new mono tracks) and treat them separately as originally needed.

           

          I don't know if you can do this with audio tracks within a video view window, etc, as I never work with video.  But you might be able to take those two mono tracks, combine them into a single stereo audio track, do your effects edits and cuts, and then if needed in the video track, break that edited stereo audio track back into two mono. And finally, fly them back into the video clip. It's a clunky method and I'm sure that other users probably have a more streamlined and elegant way to do this.  (I'd love to hear it, anyone?)  But it works for me at present.

          • 2. Re: Audition: making changes to two mono tracks acting as stereo?
            Velzz Community Member

            From what I understand, once the clips are on the timeline from the source, you cannot change them from mono to stereo or vice versa. Therefore to do what you're suggetsting would require a complete re-edit of the audio portion of a 26 minute film.

             

            i just really dont know why Audition can't sense that the two tracks are essentiall part of a whole and just apply the edits to both if you have them both selected instead of only one.Sigh. It's odd what i seem as intuitive no brainers just doesn't seem to be implemented.

            • 3. Re: Audition: making changes to two mono tracks acting as stereo?
              nudomi Community Member

              >>>>once the clips are on the timeline from the source, you cannot change them from mono to stereo or vice versa.

               

              I figured that might be the case.  What I was wondering was whether you can copy each of those two mono tracks into a separate Audition stereo audio track, not part of the video clip at all, do the edits, break the completed edit back to two mono tracks, then fly them back into the video timeline.  I have no clue if you can fly audio back in without a complete re-edit, as you suggest.  I recall a friend working at a public television station years ago, working with Final Cut Pro.  It seemed to my limited exp, watching him work, that he could fly in the audio tracks and move them around (I had done some minimal music tracks for him).  Anyway, sorry if I'm completely off base.  Just wanted to help. 

              • 4. Re: Audition: making changes to two mono tracks acting as stereo?
                _durin_ Employee Hosts

                Did you bring this timeline into Audition via Premiere Pro's "Edit in Audition" command, or are you coming via Final Cut Pro or OMF? 

                 

                Premiere interchange should maintain the proper channelization, but FCPX and OMF break stereo down into separate mono clips on separate tracks.

                 

                If you create a Bus track and set the output for each of your audio tracks to the Bus, rather than the Master, you can apply effects and automation on the Bus track which will affect both of the incoming tracks signals. 

                 

                As for the issue posting on the forum, can you be specific about which forum you were attempting to post?  There's a main "Audition" group under which are several sub-forums.  Posting is only possible within the sub-forums. 

                • 5. Re: Audition: making changes to two mono tracks acting as stereo?
                  Velzz Community Member

                  Durin, suddenly i am able to post here now.. i made sure I was logged in every other time I tried. Weird.

                   

                  Anyway, yes I brought the timeline in via "Edit in audition" in PrP.

                   

                  Here is some more infor regarding these audio tracks..

                   

                  This project started off being edited by my friend off his Canon Gl2 on Final Cut express. My friend is a very rudimentary editor. I have never used Final Cut Express hands on so i don't know what the scoop is with it and how it handles audio. It is now in my hands on my PC on Premeire Pro. These double track mono audio clips on the timeline were there when i loaded the project up since the first day. Here are the properties of one of the audio clips in the timeline that have a copy of them right below in a separate time line:

                   

                  Type: QuickTime Movie File Size: 2.1 GB Image Size: 720 x 480 Frame Rate: 29.97 Source Audio Format: 48000 Hz - 16 bit - Mono Project Audio Format: 48000 Hz - 32 bit floating point - Mono Total Duration: 00;10;04;23 Average Data Rate: 3.6 MB / second Pixel Aspect Ratio: 0.9091

                  QuickTime Details: Movie contains 1 video track(s), 2 audio track(s) and 1 timecode track(s).

                  Video: This movie appears to have DROPPED FRAMES. There is 1 frame with a duration of 8/2997ths. There are 18125 frames with a duration of 1/29.97th.

                  Video track 1: Duration is 0;10;04;23 Average frame rate is 29.98 fps

                  Video track 1 contains 1 type(s) of video data:

                  Video data block #1: Frame Size = 720 x 480 Compressor = DV/DVCPRO - NTSC Quality = Most (5.00)

                  Audio: Audio track 1 contains 1 type(s) of audio data:

                  Audio data block #1: Format = 16 bit - Mono Rate = 48000 Hz Compressor = 16-bit Little Endian

                  Audio track 2 contains 1 type(s) of audio data:

                  Audio data block #1: Format = 16 bit - Mono Rate = 48000 Hz Compressor = 16-bit Little Endian

                  Timecode: Timecode track 1 contains 1 type(s) of data:

                  Timecode data block #1: Start Time = 00;29;29;24 Reel name = Untitled

                   

                  Now as you can see it says there's 2 audio tracks. HOWEVER, when i open up this file in the source and drag a clip into the timeline, it's only wanting to place one audio clip on the timeliine, not two. Now I cannot imagine my friend though pulling two audio clips. I have watched him edit parts of this film and I know he doesnt do that.

                   

                  Now here is a mystery for you: Some audio from some takes will try and place itself on Audio 1 (stereo) BUT the properties say it is 2 mono tracks, while there are other random takes i try pulling footage from where the audio will not go on Audio 1 even though the properties show the audio from that clip being the exact same as from the clip that WILL go on Audio 1.. makes no sense to me.

                  • 6. Re: Audition: making changes to two mono tracks acting as stereo?
                    _durin_ Employee Hosts

                    Okay.  From what I understand from your description, your friend probably exported his Final Cut project as FCPXML, which is an interchange format that Premiere supports.  Final Cut treats ALL audio channels as separate mono clips for each channel, however within its own interface it links those clips together.  When it exports, however, those "separate" channels are no longer linked.  They are exported AS separate files and placed into separate tracks and generally treated as if they were completely different clips/assets.  (I believe this would be the case if you imported that FCPXML file back into Final Cut, but am not at a location where I can verify that right now.)

                     

                    You may want to post over on the Premiere forum as some of those folks will have much better knowledge than I on whether this issue is easily addressable within Premiere.  If so, then Premiere should be able to send Audition proper stereo clips.

                    • 7. Re: Audition: making changes to two mono tracks acting as stereo?
                      Velzz Community Member

                      ok will do thanks. Also what i have been doing is just deleting the second audio track and then epxporting everything to premiere as a stero mixdown.

                      • 8. Re: Audition: making changes to two mono tracks acting as stereo?
                        SteveG(AudioMasters) Community Member

                        Velzz wrote:

                         

                        Durin, suddenly i am able to post here now.. i made sure I was logged in every other time I tried. Weird. 

                        Wasn't just you - it was everybody. That's why there were no posts at all on any of the Audition forums for the last couple of days. Somebody's clearly reset things.

                        • 9. Re: Audition: making changes to two mono tracks acting as stereo?
                          ryclark Community Member

                          I wondered where my Reply button had vanished to yesterday.