Im trying to rip a movie using dvd::rip and am getting a couple errors after it finishes. this is what they say.

ive never used this program before, but i thought i changed all the settings to what they needed to be. It looks like the problem has something to do with grabbing a preview frame in the Clip & Zoom tab. if you guys know whats happening or if its even important please let me know.

You need to get a screen capture, and choose your image quality(like NTSC high/med/low/anastropic/etc) before you convert. You didn't do that.

I need to do that before i Rip or before i Transcode/Convert? I hadnt even gotten to the converting part yet. it happened right after i ripped it. its giving me the same error when i click the Grab Frame button before i rip as well. i think dvd::rip uses ImageMagick to do those screen caps, and i know i installed that module when i built dvd::rip.

The same error occured after update. Look for the commands in DVD::RIP Logging Tab. Here is something like this:

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Tue May 10 10:14:14 2005 Starting job (1): Grabbing preview - title #1, frame #2574
Tue May 10 10:14:14 2005 Executing command: mkdir -m 0775 /tmp/dvdrip8877.ppm; cd /tmp/dvdrip8877.ppm; dr_exec transcode -H 10 -z -k -o snapshot -y ppm,null -x vob,null -i /mnt/sda3/temp/test/vob/001-C001 -c 13-14 -L 29508 && dr_exec convert -size 720x576 /tmp/dvdrip8877.ppm/snapshot*.ppm /mnt/sda3/temp/test/tmp/test-001-preview-orig.jpg && dr_exec convert -size 720x576 /tmp/dvdrip8877.ppm/snapshot*.ppm gray:/mnt/sda3/temp/test/tmp/test-001-preview-orig.raw && rm -r /tmp/dvdrip8877.ppm && echo DVDRIP_SUCCESS
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The commands are chained with "&&". Next command will execute only if previous exits without errors.
Check each command in a terminal (without dr_exec).

In my case transcode aborted with error in glibc

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[transcode] encoded 1 frames (0 dropped, 0 cloned), clip length 0.04 s
*** glibc detected *** double free or corruption (out): 0xb73e3008 ***
Abgebrochen [Abort]
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I found in transcode forum following:

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From: Rick Harris <rickharris <at> mightylegends.zapto.org>
Subject: Lanczos3 dies with newer glibc
Newsgroups: gmane.comp.video.transcode.user
Date: 2005-04-22 07:12:23 GMT (2 weeks, 4 days, 1 hour and 58 minutes ago)
[...]
As far as I can see, the problem lies directly with the way
>=glibc-2.3.4-20041102 interacts with transcode's zoom.c/.h code.

Turning off this glibc error check with 'export MALLOC_CHECK_=0' &
re-running transcode results in the error disappearing, but transcode is
still 'Killed'.
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Unfortuneatly only the errormessage disappears. The transcode command still exit with the error.
Solution:
Update transcode. In my case transcode 0.6.14 work without errors.
If you don´t want inverted and fliped images update also dvd::rip to newest version, because the transcode commands changed a little bit.
dvd::rip 0.52.3
glibc 2.3.5 (properly a litle bit older version works too. Not tested)
transcode 0.6.14
How to update depends on the distro you use.

Hope this helps...