According to this article, NEF files are photo files. Not video files. Have you tried opening them in Photoshop?
NEF files are not one of the photo file formats that Premiere Elements supports.
Does your camera not shoot in more traditional JPG or even RAW formats?
thank You for the quick answer
But its not the point, that i can jpegs into Adobe PRE. But NEF in PRE11 works. I think that the P7800 from Nikon is very new and thats the reason that it can it not read . Maybe later.
I don't know what to tell you. NEFs are not a supported file in Premiere Elements.
You can import NEF raw files into Premiere Elements project IF the version of Camera Raw on your computer supports the camera that you are using. And, the other side of the story is that a given version of Premiere Elements must be supported by the Camera Raw version.
Even if we are talking about Premiere Elements 12 with the latest supported version of Camera Raw plug-in (8.2), your Nikon P7800 camera is not on the list of supported cameras either as Nikon P7800 or Nikon Coolpix P7800.
I would suggest that you watch for future Camera Raw Updates which might include support for your particular camera (See Premiere Elements, Help Menu/Updates).
I downloaded some sample Nikon P7800 raw images from the Internet. The file extension is not .nef but rather .nrw. Please confirm whether your raw images from the Nikon P7800 are .nef or .nrw.
Have you seen the following
In addition, I have found that Premiere Elements 12 (Camera Raw 8.2 installed) will not accept the P7800 .nrw file nor will the DNG Converter 8.2 process this P7800 .nrw file. On the other hand, I have found that Premiere Elements 12 (Camera Raw 8.2 installed) will import the P7700 .nrw file, and the DNG Converter 8.2 will process the P7700 .nrw file to .dng which can also be imported into Premiere Elements 12. Note that Nikon Coolpix P7700 is on the Camera Raw camera supported list.