How to run bat with parameters?

Question

Delphi

Hello, tell me how to run bat with parameters
I try:

ShellExecute(Handle, 'open','ff-prompt.bat', PChar('ffmpeg -i "c:\fb.avi" -f mjpeg -ss 00:00:01 -vframes 1 "1.jpg" 2>&1'), nil, SW_SHOWNORMAL);

but does nothing

Answer 1

"ffmpeg -i \"c:\fb.avi\" -f mjpeg -ss 00:00:01 -vframes 1 \"1.jpg\" 2^>&1'"