18 Replies Latest reply: Apr 3, 2013 11:52 AM by hd191002 RSS

    Exports only left channel

    petergirimalling Community Member

      When I replay the video within PrE 10, the sound is stereo. However, when I export it (tried several format, ie WMF HD ) it will only play sound in one of the channels.

       

      Doees anybody know, what could be the problem here?

       

      Best regards,

      Peter

        • 1. Re: Exports only left channel
          Steve Grisetti CommunityMVP

          Have you ensured that your movie has two channels of audio using the program's audio meters (not trusting your ears or your computer speakers)?

           

          If so, what model of camcorder is your video coming from and what format and resolution is it?

           

          When you set up your Premiere Elements project, which settings did you select?

          • 2. Re: Exports only left channel
            petergirimalling Community Member

            Thanks for your prompt reply!

             

            1) The audio meters look alright. The left and the right level are almost the same. I am, however, a little puzzled by the balance: it seems to vary constantly (by itself, without me having changed it) through the whole spectrum from almost -100 to 100, when I play the clip. It is like the balance has it's own life. This is also reflected on the "Audio mixer" where the balance knob constantly turns by itself throughout the video.

             

            But this is not reflected in the meters, that are at the same level throughout the clip. As I mentioned, I can also hear sound through both channels on the headphones.

             

            2. I am sorry, but I don't remember the brand and model of the camcorder, but it was a semiprofessional one with XLR and microports (microphone clipped to the clothes of the speaker). You mean the video resolution? I don't have that with me, but I think 1440x1080. It was recording directly to flash memory cards.

             

            3. Project settings are just what it suggested as default. HDV 1080i and 25 frames/sec. But this has nothing to do with audio, I suppose?

             

            Best regards,

            Peter.

            • 3. Re: Exports only left channel
              Steve Grisetti CommunityMVP

              Well, it could well be something wrongly configured with your audio. If, for instance, your camcorder recorded in 5.1 audio and your video project was set up for stereo -- or vice versa -- it could conceivably give you the results you're seeing. So it's a shame you don't know what kind of cam the video came from.

               

              What information do you get when you open your video in the program Media Info or G Spot?

               

              Does your video project have audio other than that recorded by the microphone? Music, for instance? Or narration? If so, do ALL of these audio sources give you only one channel on your output?

              • 4. Re: Exports only left channel
                the_wine_snob Community Member

                Peter,

                I am, however, a little puzzled by the balance: it seems to vary constantly (by itself, without me having changed it) through the whole spectrum from almost -100 to 100, when I play the clip. It is like the balance has it's own life. This is also reflected on the "Audio mixer" where the balance knob constantly turns by itself throughout the video.

                It sounds like you have Audio Track Keyframes, and what you are seeing is the automation that they provide.

                 

                In the Audio Track, display Track Keyframes>Balance, and see if there ARE Keyframes there.

                 

                Good luck,

                 

                Hunt

                • 5. Re: Exports only left channel
                  petergirimalling Community Member

                  I've just been experimenting with this for a couple of hours. It seems to be something in the settings for the project. I've tried to import exactly the same media (footage) to a new .prel file, I made from scratch and here sound works perfect. I've also tried to delete all the clips in the timeline for the problematic .prel file, imported new media and placed them in the timeline. This again gives only sound through the left channel after exporting.

                   

                  The thing is that I've made a bunch of .prel files for a project where we need to make a lot of short videos. They are all based on the same template file (I made one .prel file that contained all the footage I needed, so I didn't have to go through the import process for each video, I made). Therefore starting all over again will really be a pain. I guess that it is a setting or something which I've made wrong in the "template" file and which has thus been replicated to all the other files. The strange thing is that the balance is perfect when reviewing the video inside PrE, only after exporting it, no sounds comes in the right channel.

                   

                  I simply can't understand what I do differently in the new files and what I did in the old template (and thus in all the other files I've made). They have the same project setting, as far as I can see.

                   

                  Bill, I haven't been able to find out if it has keyframes. It sounds quite possible that this is what I've done without knowing it, but on the other hand, it's strange that it changes this many times during a couple of minutes. And after investigating I found that not all the videos have this behaviour, but all of them gives only the sound through the left channel after exporting. So probably the two problems are not interrelated.

                   

                  I really appreciate your help. Thanks a lot.

                  • 6. Re: Exports only left channel
                    the_wine_snob Community Member

                    I've also tried to delete all the clips in the timeline for the problematic .prel file, imported new media and placed them in the timeline. This again gives only sound through the left channel after exporting.

                    If the Audio Track Keyframes have been added, they are on the Track, and not the Clips themselves. If you replace the Clips, the Keyframes will still be there, and affect the replacement Clips.

                     

                    Good luck,

                     

                    Hunt

                    • 7. Re: Exports only left channel
                      the_wine_snob Community Member

                      Bill, I haven't been able to find out if it has keyframes. It sounds quite possible that this is what I've done without knowing it, but on the other hand, it's strange that it changes this many times during a couple of minutes. And after investigating I found that not all the videos have this behaviour, but all of them gives only the sound through the left channel after exporting. So probably the two problems are not interrelated.

                      Peter,

                       

                      It could be my confusion too. I might be thinking of PrPro, where the Audio Track Keyframes can be toggled, and not PrE. Sorry.

                       

                      If you were to Delete your Audio Clips, and then drag them from the Project Panel to a different, empty Audio Track, will you loose much of your editing?

                       

                      Good luck,

                       

                      Hunt

                      • 8. Re: Exports only left channel
                        Steve Grisetti CommunityMVP

                        Are you sure about that, Bill? In my experience, audio keyframes in Premiere Elements are on the audio clips themselves. Not locked to the tracks.

                        • 9. Re: Exports only left channel
                          petergirimalling Community Member

                          Steve, where do I check if the video project is set up for 5.1 audio or other audio settings? Under project settings I can only see Sample rate and display format.

                          • 10. Re: Exports only left channel
                            the_wine_snob Community Member

                            Steve,

                             

                            I think that you are correct, and that I am wrong. I confused things between PrE and PrPro. I just went poking around, and found my error, which Peter had already pointed out.

                             

                            Thank you,

                             

                            Hunt

                            • 11. Re: Exports only left channel
                              petergirimalling Community Member

                              If I take one of the "faulty" files, delete everything and import a clip to timeline, if I place it in track 1, 2 or 3, it exports only the left channel sound. Also the sound- and narration tracks only come through the left channel after exporting.

                               

                              However, if I make a new track 4 and place the clip there, the sound comes through both the channels when exporting!

                               

                              So it's something with certain tracks (the tracks that were there all the time). While new tracks work well.  So it cannot be project settings, after all, but something that I have done to these specific tracks.

                              • 12. Re: Exports only left channel
                                petergirimalling Community Member

                                I think I've found a work-around: I can simply move the clips in track 2 and 3 (these are the ones I use) to track 4-5 and then delete unused tracks, then I'm back to the situtaion before, but now it'll export to both channels.

                                 

                                Weird... Almost sounds like a bug in PrE. What else could cause such a strange behaviour?

                                 

                                BR Peter.

                                • 13. Re: Exports only left channel
                                  the_wine_snob Community Member

                                  Peter,

                                   

                                  Great news.

                                   

                                  I have been pondering your problem, and the Keyframes issue. As I discovered, the Audio Track Keyframes (assigned from the Audio Mixer for automation) are not the same in PrE. However, it seems that there are some indirect similarities, where Keyframes, even if applied to Audio Clips (PrE), they behave a bit like the Track Keyframes in PrPro.

                                   

                                  Glad that you have found a workaround. I need to do more exploration, to find out the relationship between the Clip automation Keyframes in PrE and the Track Keyframes in PrPro. You have given me some "homework" to persue. Thank you.

                                   

                                  Good luck, and thank you for your patience,

                                   

                                  Hunt

                                  • 14. Re: Exports only left channel
                                    Steve Grisetti CommunityMVP

                                    If changing the audio to upper tracks solves your problems it's almost definitely related to a mismatch in your project settings between stereo and 5.1 audio, as I'd suspected earlier.

                                     

                                    I'm glad you found a workaround. But matching project specs and video specs would be a simpler solution for future projects.

                                    • 15. Re: Exports only left channel
                                      petergirimalling Community Member

                                      Yes Steve, I fully agree that it would be the correct (and easy) way to go, to get it right first time. But could you lead me in a direction, where are these audio settings set up? I might even Br able to revert them for the existing files rather than moving tracks around?

                                       

                                      Peter

                                      ---

                                       

                                      If changing the audio to upper tracks solves your problems it's almost definitely related to a mismatch in your project settings between stereo and 5.1 audio, as I'd suspected earlier.

                                       

                                      • 16. Re: Exports only left channel
                                        the_wine_snob Community Member

                                        When choosing a Project Preset, at New Project, there are many choices. Some, like AVCHD, do have the option for 5.1 SS Audio. Now, this is very helpful when working with 5.1 SS material, BUT PrE cannot Export/Share TO 5.1 SS. The Audio is mixed-down to stereo.

                                         

                                        Still, when one has 5.1 SS Source Files, working IN a Project with 5.1 SS is a benefit.

                                         

                                        PrE must match the Audio Track Type to the channel-count of the Source Files, just as PrPro does, but if one has Clips that do not match the channel-count of any Audio Track (say mono/1-channel), PrE will create one.

                                         

                                        Good luck,

                                         

                                        Hunt

                                        • 17. Re: Exports only left channel
                                          petergirimalling Community Member

                                          In followup to yesterday's conversation on my missing right channel sound I just discovered in connection with my workaround that new tracks that I insert also - by default - have the balance all the way to the left. For these tracks I can put it back to middle, and then it is exported correctly.

                                           

                                          Also, it is simply impossible to set keyframes in this file. If I try to consecutively change the balance throughout a clip, I can hear in the headphones that it shifts from left to right as I change the balance. But it doesn't record it, and no keyframes are put into the track. When I replay it, the balance keeps constant the position it is in the track properties window. Actually, this behaviour also goes for the new tracks I made.

                                           

                                          Just I wondered if the might bring you closer to a possible cause of the behaviour I am experiencing. Can I somehow have disable the ability to set keyframes?

                                           

                                          /Peter.

                                          • 18. Re: Exports only left channel
                                            hd191002

                                            Hi Everyone,

                                             

                                            I had exactly the same problem today in one of my PrE 10 project. I had a similar project before with exctly the same project settings - where these issues did not occur. What helped here, was to create new tracks and move my existing audio tracks from the old to the new tracks.

                                             

                                            This seems to be a very strange bug.

                                             

                                            Thanks to Bill Hunt and particularly to petergirimall for sharing this and providing the workaround solution!