The framefile can be whatever yoyu want to call it, one for each MPEG set, usually in the Daphne framefiles folder.
They are generally included with the MPEGS. You specify the name of the framefile either in the Daphen Loader config screens or in your command line if you prefer.
The most common framefile will be in this format
<line 1 - specify the path to your MPEG file>
c:\daphne\mpeg\lair
<line 2 - specify the frame number and corresponding MPEG file name>
1 Lair.m2v
As I say that is the most common and applies generally when you only have one m2v file. Some MPEG sets are broken into several M2V's so you need a framenumber for each file.
Google around, you will find the usual framefiles quite easily. Or if you only have one M2V as above, make them yourself.