Bashscripts.org

Sorry if this is simple but I'm learning still so please keep the flaming to a minimum that would be brill.

What I'm trying to do is batch convert files with ffmpeg so far i know that the while loop is working (as i have tested it with echo(S) and i used the same algorithm to Mass install / uninstall software with the apt-get command) but whenever i try and interact with ffmpeg it crashes out of the loop after doing one conversion. I have a feeling it is that ffmpeg is still working on something when it goes through the loop again, i have tried adding a wait and a sleep to no avail.

any help would be gratefully received,
thanks again

code:

`ls *.MPG >>TMP`
CNT=1
FILENAME="TMP"
while read APP
do
echo "File $APP converted to vid$CNT"
ffmpeg -i $APP VID$CNT.WMV
wait
echo "Done $CNT"
CNT=$(( CNT + 1 ))
done < $FILENAME
rm TMP
exit

PS: This is just a snippet of the code;

A tiny bit of flaming first: please use [ code ] tags when pasting your code. It makes it so much easier to read...
The code below is not tested, I just typed it in here... I hope it works better for you.

Flame away my man all you like you have Fixed it! never thought of using a for loop!

Worked a charm! Could I ask where was I going wrong? I couldn't figure out no errors and it worked when I was echo's ?

PS. Love the terror from MTG!

Did some file names contain spaces?

No the 2 test I/P files where ;
M2U00617.MPG
M2U00618.MPG

thanks

ffmpeg reads from stdin so the loop doesn't get fed. Adding < /dev/null to the ffmpeg command would have fixed this problem.

There's a full explanation at http://mywiki.wooledge.org/BashFAQ/089