From: nobuyoshi nakada <nobuyoshi.nakada@...>
Date: 2006-01-18T14:03:36+09:00
Subject: Re: Looping through files using exec

Hi,

At Wed, 18 Jan 2006 13:09:23 +0900,
Jason Cameron wrote in [ruby-talk:176073]:
> I'm trying to do a mass encode of a large directory of media files but 
> I'm not having much luck.  I tried to use bash but it doesn't like 
> filenames with spaces so now I'm trying to do it with ruby but using the 
> exec command it executes the first line then finishes.  Here's what I've 
> done in the IRB.

exec replaces current process with invoked command, use system
instead.


> Dir["*.avi"].each {|x| exec ("mencoder \"" + x + "\" -vf scale=320:240 
> -ovc lavc -lavcopts vcodec=mpeg4:vbitrate=150 -oac mp3lame -lameopts 
> vbr=3:br=64 -o \"Done\\" + x + "\"") }

And also bash should work if you quote names properly:

  opts="-vf scale=320:240 -ovc lavc -lavcopts vcodec=mpeg4:vbitrate=150 -oac mp3lame -lameopts vbr=3:br=64"
  for x in *.avi; do
    mencoder "$x" $opts -o "Done \"$x\""
  done

-- 
Nobu Nakada