[stickboy]

From the command prompt, you can do something like:

for %x in (*.rm) do (
echo.DirectShowSource^("%x",25^)
echo.BilinearResize^(352,288^)
) > "%~nx.avs"

If your scripts need to be any more advanced than that, then you should put that stuff into a common .avs file:

function DoIt(string filename)
{
    DirectShowSource(filename, 25)
    BilinearResize(352, 288)
    # ... other AviSynth processing commands...
    return last
}

and then in the auto-generated .avs files:

for %x in (*.rm) do (
echo.Import^("common.avs"^)
echo.DoIt^("%x"^)
) > "%~nx.avs"