The first thing you should do is check this FAQ (especicially the parts regarding seeking):
https://answers.launchpad.net/openshot/+faq/983
What version of MLT is on your system? There was a memory leak that is fixed in v0.8.2, if you're not using that try upgrading to that version.
Are all your avi files from the same source? Does the same thing happen with all of them?
The first thing you should do is check this FAQ (especicially the parts regarding seeking):
https:/ /answers. launchpad. net/openshot/ +faq/983
What version of MLT is on your system? There was a memory leak that is fixed in v0.8.2, if you're not using that try upgrading to that version.
Are all your avi files from the same source? Does the same thing happen with all of them?