Question

This script is run from within a directory of OGG files.

cd c:\dirWithOGG
for %%f in (*.ogg) do (
sox %%f %%f pad 0 "soxi -D %%f"
sox %%f %%f repeat 10
)

First time I’ve had to create a batch script, I thought it’s going to easy.

soxi -D %%f

On it’s own, the above returns a decimal value. For some reason, it’s doesn’t execute from within the script. sox and soxi are in a location added to PATH.

Any help appreciated, thanks.

Answer 1

If you want to use the output of soxi -D %%f as a command line parameter for sox, here’s how you can do that:

FOR %%f IN (*.ogg) DO CALL :runsox "%%f"
GOTO :EOF

:runsox
soxi -D %1>tmpfile
SET /P decvalue=<tmpfile
sox %1 %1 pad 0 %decvalue%
sox %1 %1 repeat 10

As you can see, the commands inside the loop have been moved to a subroutine that the loop is calling now. Other than that, the output of soxi is redirected to a file, which then is read into a variable, which in turn is used to pass the value to sox.

It’s actually because of the variable that I had to move the commands outside the loop. It would work incorrectly inside the loop unless delayed expansion was enabled and a different syntax was used to address the variable. I preferred it implemented as above, though.