1st, More information needed for someone to help... please click below and provide the requested information
-Premiere Elements FAQ http://forums.adobe.com/thread/1042180
2nd, exactly what are you editing?
Codec & Format information, with 2 links inside to read
-read both links in reply #1 http://forums.adobe.com/thread/1270588
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 screen shot instructions
3rd, The Tutorial Links Page http://forums.adobe.com/thread/1275830 may also help
Premiere Elements FAQ List (2 pages of FAQ as of September 2013) http://forums.adobe.com/community/premiere_elements/premiere_elements_faq?view=all
Premiere Elements TIPS List (6 pages of Tips as of September 2013) http://forums.adobe.com/community/premiere_elements/premiere_elements_tips?view=all
Let us start with...on what computer operating system are you running Premiere Elements 12? For now I will assume Windows 7, 8, o4 8.1 64 bit.
What are the properties of what you are importing into the project? And how are you importing your source into the project...Add Media/Files and Folders/Project Assets or other? Once you get your file into Project Assets, what is shown there underneath the thumbnail of the file for duration...39 seconds or 15 seconds? When you get the 15 seconds to the Expert workspace Timeline, is the file represented on both Video 1 and Audio 1?
Based on the properties of the source, what did you or the project set as the project preset (See Edit Menu/Project Settings/General (gray and non grayed out information there).
Focus on the properties of the source, such as, video and audio compression, frame size, frame rate, interlaced or progressive, file extension, pixel aspect ratio etc. The properties of the source should match the project preset details.
Let us start here and then decide what next.
I want to thank you for your fast response, I just signed up for forum today
and was not expecting it. I checked all links provided and printed for future
use. My file was from a camcorder vhs tape my mother shot 20 years ago.
She wanted it transfered to disc. I used Diamond capture device to put on computer. After reading links and trying to understand them, I tried converting
the file which was AVI to MPEG with Format Factory. I Dragged the MPEG into
Premiere and the entire file showed up in timeline. File went from AVI 17GB to MPEG 150 MB. I t worked for me. Thank you again for letting me know there is
help for an uninformed beginner.