ffmpeg MKV to MPEG4 convert

@ECHO OFF
IF EXIST "%1" (
    ffmpeg -i %1 -c:a copy -c:v copy %2
    GOTO END
) ELSE (
    ECHO\
    ECHO Using https://www.ffmpeg.org/ to conver MKV to MPEG4
    ECHO   Usage: mkv2mpg "input file.mkv" output.mp4
    ECHO\
    ECHO Surround filenames with doublequotes if they contain SPACE or similar
    GOTO END
)

:END
REM Got this from Reddit https://www.reddit.com/r/VideoEditing/comments/2ws58z/best_way_to_get_mkv_files_into_sony_vegas_pro_13/ctxzm7f