I am trying to capture still images from stored AVI files with PE7 then saving them so I can process them with Lightroom. I have been told that I need to save them as a JPEG file but i cant seem to change the file extension when saving. I can change the file location but not the extension. I have the trial versions of Premier and Lightroom to see if they can do what I want
To save a frame from a video as a JPEG, click on the Freeze Frame (camera) icon on the Monitor panel and select the option to save the file. Then, when the browser opens, click on Settings, where you'll find the option to save it as any number of still image formats, including JPEG.
If you are going to work on the image file, whether in LightRoom, or PS, I'd suggest doing the Save (per Steve's directions), as either a BMP, or TIFF, as JPEG will introduce some compression. PE will easily Import the output (I'd use either PSD or TIFF from your image processing program). I think that you'll like the results better.