I'm using Ubuntu 10.10 and reportet this bug on launchpad first, you'll find that original bugreport here: https://bugs.launchpad.net/ubuntu/+source/gstreamer0.10/+bug/676637

When I import a DV AVI file (an amorphic widescreen video) in PiTiVi v0.13.5 the aspect ratio of the video isn't correct (and I can't correct it). I suppose it has something to do with the PAR (pixel aspect ratio) which isn't detected. The PiTiVi-developers told me on the #pitivi-channel on freenode that this is a GStreamer-bug. I have the same problem if I try to open the file with Totem using GStreamer.

I don't have the problem with Kino (http://kinodv.org/), so it seems like my files can't be the cause of the problem.

I add two screenshots: one of pitivi and the other of kino, both showing the same scene of the same DV AVI file. In both cases I didn't do anything else but to import the file and set the timeline to a certain time.

In contrast to PiTiVi (GStreamer) Kino seems to recognize the pixel aspect ratio of the video.