4 Replies Latest reply on Sep 15, 2012 8:12 PM by Jimmy Crim

    Half of audio missing when importing .avi

    Jimmy Crim

      Hi, I am having some trouble with importing avi-files in Premiere Pro 5.5. I searched forum, read and did the troubleshooting guide at the wiki plus searched through the Adobe Premiere Pro Help without any result.

       

      Today I've been editing for 8 hours and everything worked fine. I imported some clips and used some of them. But then I messed up the bin-structure so I cleared the whole bin and started importing them again. I also deleted the sequence so no clips where in use.

       

      But now when I try to import the exact same file that worked before, The audio gets out of sync exactly half of the movies length. Like the audio starts in the middle of the clip while the movie starts from the beginning. So half way through the file it gets quiet because the audio ends there.

       

      I rebooted my laptop and restarted Premiere Pro. Now I've also reinstalled it. The files play fine in Media Player, VLC and Quicktime.

       

      Thankful for any kind of hints that could solve the problem

       

      Edit: now there is no sound at all - sometimes.. it kindof differs

       

      Edit2: now it started working again - although sometimes it works and sometimes it don't.. sooo annoying
      But if any one else gets this problem: restart restart restart restart, ;<

        • 1. Re: Half of audio missing when importing .avi
          John T Smith Adobe Community Professional & MVP

          Read Bill Hunt on Audio Conforming http://forums.adobe.com/thread/726693

           

          Also, where did you get your AVI and which is inside the wrapper?

           

          Read Bill Hunt on a file type as WRAPPER http://forums.adobe.com/thread/440037

          What is a CODEC... a Primer http://forums.adobe.com/thread/546811

          What CODEC is INSIDE that file? http://forums.adobe.com/thread/440037

          .

          Report back with the codec details of your file, use the programs below... a screen shot works well to SHOW people what you are doing

          http://forums.adobe.com/thread/592070?tstart=30

          .

          For PC http://mediainfo.sourceforge.net/en or http://www.headbands.com/gspot/

          For Mac http://mediainspector.massanti.com/

          .

          http://blogs.adobe.com/premiereprotraining/2011/02/red-yellow-and-green-render-bars.html

          .

          If you have a red line over the timeline after importing a video and before adding any effects... your project is wrong for your video... read above about codecs

          .

          Once you know exactly what it is you are editing, report back with that information... and your project setting, and if there is a red line above the video in the timeline, which indicates a mismatch between video and project

          .

          H.264 will NOT work inside an AVI wrapper http://forums.adobe.com/thread/854115

          -Insignia camera uses H.264 to either AVI or MOV... so use the MOV wrapper

          1 person found this helpful
          • 2. Re: Half of audio missing when importing .avi
            the_wine_snob Level 9

            Also, when one Imports a file with Audio, PrPro will need to Conform that Audio for editing. That process can be almost instant for short Clips, on a fast computer, or can take a few moments, with a progress bar, showing the % of Conforming that has been done. This article goes into more detail: http://forums.adobe.com/thread/726693?tstart=0

             

            If one begins editing, and especially if the use the Clip, while Conforming is going on, the CFA file can become truncated. The workflow is to Import, and not touch the computer, until Conforming has completed.

             

            Also, as you had already Imported some of those Clips, I wonder if PrPro is trying to use the CFA & PEK (Waveform Display) files, that were created initially. If that IS the case, I would start over with the Import of those files, and first Delete the Media Cache (the CFA & PEK files), then Import, and let that Conforming complete.

             

            Good luck,

             

            Hunt

            1 person found this helpful
            • 3. Re: Half of audio missing when importing .avi
              Jimmy Crim Level 1

              Thank's a lot for the help and the reading! I got a lot more wiser about codecs and the details behind the file extension.

               

              I shot the video (and audio ) with a Nikon D300 DSLR.

              Here is the specs of the camera if needed.

              http://www.dpreview.com/news/2009/7/30/nikond300s#specs

               

              I ran the errored file through G-spot and this is the result. This is currently the only file that isn't working. Before, another file didn't work, but then it started working and now this file isn't working. At this point I imported all the other files into Premiere and they seem to work at the moment.

               

              gspotsouncheck.jpg

               

              Also, there is a red line above the video clips in the timeline even before adding any effects. The project is 25 fps and my videos are 24 fps. I didn't realize until now, hehe. Here is my sequence information.

               

              Properties

              6_Middagen

              1280 x 720

              00;11;20;05, 25,00 fps

              48000 Hz - Stereo

               

              Settings

              sequencesettings.jpg

              However I also tried importing and adding the same video clip on a Sequence with the settings

              Editing mode: DSLR
              Timebase: 24.00 fps

              Display format: 24 fps Timecode

               

              The rest of the settings are the same as in the picture above. This time I didn't get any colored render line. But the audio problem was still there.

               

              This is my project. You can see the waveform disappearing right after my timeline marker.

              timeline.jpg

               

              I Googled "Nikon D300s h.264" and got a lot of results saying it does use it. I know my video files didn't work in CS4 before but the Nikon support said they would work fine in future updates of Adobe Premiere Pro. I am using Adobe Premiere CS5.5 though.

               

              The weird thing is that one file randomly stopped working. Then it started working again and now another file isn't working.

              • 4. Re: Half of audio missing when importing .avi
                Jimmy Crim Level 1

                Thanks for you tips! The clip is kindof small so I never see any percantage att all except when I imported lots of clips at the same time. I could have minimized Premiere or opened some other window while doing this, it's possible. Also it's a five minute clip of 700 MB and this is a laptop for home usage. So maybe it SHOULD take longer?

                 

                However, I tried deleting the Media Cache and even restart my computer just in case but the problem persists.

                 

                Althuogh what you are describing seems like a very good explanation. Because I usually minimize Premiere while it's conforming. And the first time I imported these clips I threw them all in together. Then I cleared them because it got a bit messy in my folder. So I imported them again one by one. Still the Cacher clearing isn't working.