4 Replies Latest reply: Nov 1, 2010 3:32 PM by Bill Hunt RSS

    How do I sync audio and video that has been demuxed?

    zorrocbr Community Member

      I have demuxed VOB assets creating separate video and audio assets.  In Premiere Pro CS5 if there is a sync issue I can simply move the video or audio asset where it needs to be on the timeline to line up properly and then just cut out the "extra" piece of an asset (either audio or video) so all the other assets line up properly.  In Encore CS5 I don't think I can cut out any part of an asset on the timeline, so I may not be able to slide the asset in proper position without overriding another asset.  So for instance if my audio incorrectly starts 2 seconds before my video in the first asset, I can't just slide it to start at 2 seconds into the project because it will run over my 2nd asset.  If I could slide it over 2 seconds and then just cut out the end 2 seconds on the audio everything would line up properly with the 2nd asset.  How do I get around this without having to go to Premiere Pro and transcoding?

        • 1. Re: How do I sync audio and video that has been demuxed?
          Stan Jones CommunityMVP

          You are right that Premiere is more the tool for what you are describing.

           

          You can make limited trims in Encore.  Some of us believe that you should not put multiple assets on the same time line; others disagree.

           

          The sync differences you describe do not make sense to me for simple demuxing.  What audio format did you bring them to?  I would focus on getting better sync from the demuxing.

          • 2. Re: How do I sync audio and video that has been demuxed?
            zorrocbr Community Member

            How would I do limited editing in Encore?  Is there any way to do a simple cut?  If not and I put each asset on its own timeline will I still have issues?  For example.

            Asset one on Timeline 1 the audio starts 2 seconds before the video, so to correct this I slide the audio asset 2 seconds over to the right.  Now it is lined up correctly with the video, but what happens when the disk is playing and it gets to the end of the video?  Will it jump directly to the 2nd timeline when the video ends or will it go there after the additional 2 seconds of the audio plays?

             

            Regarding the demuxing there was probably an issue with the original asset, I don't think my demuxing caused the issue.  Another curiosity, When I added the assets to the timeline they all snapped in place as if there were no gaps between the assets, but when I zoomed way in I see some gaps between the audio pieces only.  The video lines up correctly.

            • 3. Re: How do I sync audio and video that has been demuxed?
              Stan Jones CommunityMVP

              Bottom line for me: you're asking for trouble trying to fix this in Encore.  The audio gaps makes me cringe - it's just a sign of the underlying problems.

               

              The limited trimming I was referring to (I don't even want to call it editing), is just shortening one track or the other and sliding to match.

              • 4. Re: How do I sync audio and video that has been demuxed?
                Bill Hunt CommunityMVP

                Stanley,

                 

                I am with you on this. I never try to make Encore do something that I can easily accomplish in PrPro - even simple stuff. The closer to perfect, that I can feed Encore, the better my life is.

                 

                To the OP, good luck,

                 

                Hunt