Variable in shell script

Hi all!

I'm a beginner, and would like to create a shell script, which will get the length of an avi file, then halves it for cutting with mencoder... here is what i have now:

#!/bin/bash
for file in /home/mysite/mydomain/myfiles/*.avi
do
moviedata= mplayer -vo dummy -ao dummy -identify $file 2>/dev/null | perl -nle '/ID_LENGTH=([0-9\.]+)/ && ($t +=$1) && printf "%02d:%02d:%02d",$t/2/3600,$t/2/60%60,$t/2%60' | tail -n 1

mencoder -endpos "$moviedata" -oac copy -ovc copy "$file" -o "$file.splitted.avi"
done

Code (markup):

It is really close to working... if you echo $moviedata, you get the half time in a formatted way, for example: 00:32:22.
If i insert it into mencoder, it says "Error parsing option on the command line: -endpos"

After that, i echoed the mencoder converter line, and i saw, that the $moviedata variable moved into the beginning of the line:

Here is the echoed line:
[B]00:51:19[/B]mencoder -endpos  -oac copy -ovc copy /home/mysite/mydomain/myfiles/1.avi -o /home/mysite/mydomain/myfiles/1.avi.splitted.avi

It should be like this:
mencoder [B]-endpos  00:51:19[/B] -oac copy -ovc copy /home/mysite/mydomain/myfiles/1.avi -o /home/mysite/mydomain/myfiles/1.avi.splitted.avi

Code (markup):

I hope someone can help me to make this script working.

 

try backticks

`mencoder -endpos "$moviedata" -oac copy -ovc copy "$file" -o "$file.splitted.avi"`
`mencoder -endpos "${moviedata}" -oac copy -ovc copy "${file}" -o "${file.splitted.avi}"`

If you want parse literal quote, I think you need to escape it.

which ever works

btw there is an easier way to get duration, using ffmpeg

ffmpeg -i ${file} 2>&1 | grep "Duration" | cut -d ' ' -f 4 | sed s/,//

 

`mencoder -endpos "$moviedata" -oac copy -ovc copy "$file" -o "$file.splitted.avi"`
`mencoder -endpos "${moviedata}" -oac copy -ovc copy "${file}" -o "${file.splitted.avi}"`

Code (markup):

Hi, i tried both ways, but itdoesn't work, somehow it still ignores the data. ( $file and $file.splitted avi is accepted, only the $moviedata isn't, kinda weird, i'm sure there is something wrong with serving the variable, not the mencoder command itself)

ffmpeg -i ${file} 2>&1 | grep "Duration" | cut -d ' ' -f 4 | sed s/,// 

Code (markup):

Well, the problem with this is that i'm just a beginner... i only want to cut movies to half, so i need to divide the whole lenght of the movie with 2, but i can't do this here because the lack of knowledge . If you can give me an example where i will get the half time of the movie in this format: 01:20:11 (h:m:s) i would be really glad.

I really don't know why the first command which i found is not working, i think it is something with serving the moviedata variable, something is wrong with the way i get it, i think.