4 Replies Latest reply on Oct 6, 2011 8:56 PM by Kevin B Good

    After Merging Clips, some Audio Tracks become empty


      I am having a very strange problem with my Merge Clips function.


      I am following a DSLR workflow from CS5.0 and had created sequences where I have synced my audio and video together.  These I was nesting into my main timeline because there was no Merge Clips in 5.0.  With CS5.5 allowing Merge Clips, I am going back into these sequences and creating a merged clip from each so I can get all of the audio files on my main timeline.


      When I create the merge clips, I get four tracks of audio.  Both camera R/L and then the field audio's R/L.  And I can work with them just fine.  However, on restarting/reopening Premiere, some of the audio tracks are now EMPTY.  I sent my friend a copy of my project file to open on his computer and he had DIFFERENT EMPTY tracks of audio.


      By empty, I mean that when you look at the source monitor under audio waveforms, and view each track individually, some tracks have a waveform and other tracks have nothing at all, not even a black line.  just a shaded green square!


      To be specific about the sequences:  there are some empty tracks in some of them, there are different video and/or audio starts in some of them, and some of them contain matching audio in/out and no extra empty tracks.  I can't seem to identify why it's dropping the audio information.  My guess is that this has something to do with conforming/pek files???



        • 1. Re: After Merging Clips, some Audio Tracks become empty
          Kevin B Good Level 1

          I'm not sure WHY this is happening, but I've experienced the same thing.


          In my case I worked it out by off-line-ing and then re-linking the clips.


          In your Project bin right-click the merged clip and "Make Offline".  Obviously choose the option to leave media files alone.  Then just right click again and "link media".  It should already be in the right folder and if you check "exact name matches only" it should find it right away.  I even managed to do this for a bin full of clips.


          They need to figure this is happening and fix it-- cause it sure is annoying.  But in the meantime hopefully that work-around will work for you as well.

          • 2. Re: After Merging Clips, some Audio Tracks become empty
            needles27 Level 3

            I had this happen to me last week - and while I didn't get a good answer over on the COW forums about whether this is a bug or a feature, there was a workaround - but annoying to lose 4 hours of work first.

            I had to make the audio clips into stereo (Clip>Modify>Audio Channels) and then merge them with the video.  If I started them as mono files, then it would happen every time. (usually every other track would go to negative infinity audio gain)

            Then, when you drop your merged clips into your timeline, they will show up as mono tracks.  When you close and reopen, they should remain. 



            Anyone else have an idea if this is a bug?

            • 3. Re: After Merging Clips, some Audio Tracks become empty
              Kevin B Good Level 1

              Sure seems like a bug.


              And for the record when it happened to me I did have 2-channel sound as dual-MONO set in Clip>Modify>Audio Challens (from an external sound recorder) being merged with the video from DSLR footage.

              • 4. Re: After Merging Clips, some Audio Tracks become empty
                Kevin B Good Level 1

                I take it back-- My fix does NOT consistently work.  It's happening more and disconnecting-reconnecting media is not fixing it.  This is majorly frustrating.  I could try what needles27 is saying, but that sets me back to the beginning on this.


                This stinks.  Anyone else have any ideas?