[MPlayer-users] Scripting and cropdetect

[JiHO]

Hi all,

I previously mentionned on this list (a long time ago... thread: 
"Encoding problems / tips needed") that I wanted to scrip the DVD 
encoding process.
At this stage I am trying to automate the crop detection procedure (I 
know this is controversial and has been discutted previously, 
nevertheless I want to automate this). My problem is with getting the 
result of -vf cropdetect. Indeed let us put the interesting lines in a file:
   mplayer dvd://1 -vo null -nosound -vf cropdetect -ss 300 -frames 4 
2>&1 | grep "crop area" > file

then if I do:
   cat file
I obtain:
crop area: X: 9..716  Y: 75..501  (-vf crop=706:426:10:76)
crop area: X: 9..716  Y: 75..501  (-vf crop=706:426:10:76)
which seems interesting

but if I do:
   less file
I obtain:
V:   0,0    1   0%  0%  0,0% 0 0 0%^MV:   0,1    2   0%  0%  0,0% 0 0 
0%^MV:   0
,2    3   0%  0%  0,0% 0 0 0%^Mcrop area: X: 9..716  Y: 75..501  (-vf 
crop=706:4
26:10:76)
V:   0,2    4   0%  0%  0,0% 0 0 0%^Mcrop area: X: 9..716  Y: 75..501 
(-vf crop
=706:426:10:76)

question 1/ why this difference?

then if I try to extract the information with awk:
cat file | awk '/crop area/ {print $8}'
I get
0
0
which corresponds to the 8th position in the output of "less file"...
The result is the same if I use variables and not files to store 
mplayer's ouput.

question 2/ I'm lost!!! help!!! can some people who have this procedure 
automated help me please?

thanks for any help.
-- 
JiHO
---
   Windows, c'est un peu comme le beaujolais nouveau :
à chaque nouvelle cuvée on sait que ce sera dégueulasse,
     mais on en prend quand même, par masochisme.
---
http://www.irisson.fr.st