Yes... depending on the SOURCE of the files
MP4 is a wrapper, what is inside YOUR wrapper - Exactly what is INSIDE the video you are editing?
Codec & Format information, with 2 links inside for you to read 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
https://forums.adobe.com/thread/1070933 for screen shot instructions
Free programs to get file information for PC/Mac http://mediaarea.net/en/MediaInfo/Download
sarah jean 16
Do you have the latest version of QuickTime installed on your computer with Premiere Elements 13? And, what computer operating system is your Premiere Elements 13 running on?
Do you actually have Premiere Elements 13 installed on your computer at the present time and are having a problem importing a file with a .mp4 file extension?
If so, is the problem importing the .mp4 into the Premiere Elements 13 Editor or into the Elements Organizer 13 that comes with Premiere Elements 13 Editor?
With this type of question, it is important to know the properties of the file involved....video and audio compression, frame size, frame rate, interlaced or progressive, as well as the file extension (.mp4 in this case). A quick way at getting at this information is by knowing and posting the brand/model/settings for the camera that recorded the video. If that plan works, then no properties read out programs to download and install.
We will be watching for further details.