[FFmpeg-user] Convert all Files at Once to Uncompressed .avi

[SAFI ALAMRI]

Please help me to  process each using one line of ffmpeg code to convert
all files at once to uncompressed .avi files that are at a pixel dimension
of 704x480.  This codes is working nice, but I faced that. When I type (y).
the output file is remove the past file (input _double_high) and create a
new one with the same name. The code doesn't convert all of them. I hope to
convert all of them at the same time. Could you help editing this code:

forfiles /p 264s /m *.264 /c "cmd /c ffmpeg -f h264 -i @file -vf
scale=704*480 input_double_high.avi"

Thanks