Created attachment 429536 [details, diff] Patch to fix problem When ripping video dvd, two issues were uncovered. One was due to transcode seg faulting (separate bug submitted with patch), and then when that was resolved, k3b would fail with "Error opening AVI file". This is a known issue: https://bugs.kde.org/show_bug.cgi?id=350403 Patch to gentoo ebuild attached.
This issue still exists in app-cdr/k3b-2.0.3-r3. Manually running the transcode command at the end of the "debugging output" window succeeds after removing the quotes around the output file name (-o) and removing all blanks and shell metacharacters from the file name (if using xvid as video codec - mpeg4 does not work because transcode does not support the "new" avcodec_encode_video2 API in libavcodec, see also https://bugs.launchpad.net/ubuntu/+source/transcode/+bug/1477272) The patch reproduced in attachment #429536 [details, diff] from the kde bugtracker is from 2015-10-26, almost a year ...
Please try out 2.0.3-r4 which contains the fix.
Tested with 2.0.3-r5, and the problem does not occur anymore. Good work, thanks for the fix! Considering that we have been waiting for this for 1.5 years, providing patch, links and everything (well, not me), you might as well have waited for our feedback before closing the issue. We do exist, you know.