I am experiencing a very similar issue also.
On what computer operating system is your Premiere Elements 12 running? Have you updated 12 to the 12.1 Update using an opened project's Help Menu/Update?
What are the properties of your source video? What is the brand/model/settings for the camera that recorded the video? Does the camera record the
video with a variable rather than constant frame rate?
What have you (manually) or the program (automatically) set as the project preset to match the properties of the source media?
See readings for Editing Mode, Timebase, Frame Size, and Pixel Aspect Ratio under Edit Menu/Project Settings/General.
When you play back the video audio in the Edit area monitor, is there an orange line over that Timeline content?
Please review and consider, and then we can decide what next.
Problems with the same symptoms can (often do) have different causes.
Best you elaborate on "similar" specific to your specific video and computer environment.
It might be to your advantage to start your own new thread on your situation unless the replies to the originator
of the thread are helping you also. Otherwise, following multi discussions could hurt the cause rather
than help it.
We will watch for your reply until you determine what is in your best interest.
Thank you for your suggestions. My version was not updated, but I did update it now to the 12.1. Unfortunately that didn't help. The strange thing is that I've used this camera with its settings and never had an issue before (done 8 or so similar videos over the past 6 months). And this particular piece I'm working on has 6 or so clips from the same day, same setup, and all of the rest of them work fine, except for this 30 minute clip in the middle only has audio for about the first 6 minutes when it put into Elements.
There is no orange line in the Timeline.
I'm using Windows 7; The camera is a Canon HD VIXIA HFS21. I'm not quite sure how to find the answers to the other questions you are asking.
Actually I got it working now. I went back to my camcorder and re-uploaded the original file to my computer then added it again to Elements and now all of the audio is there. Not sure why, but I'm glad it is working now.
Great news. And great follow up on the situation.
If the issue returns, please let us know, and we can try to get at the why. You might want to make a note of all details of the present working
situation so that it will make it easier to go through that check list if the problem returns (hope not).
Your follow up is appreciated by all.