[Fermin Branger]"Have you changed the CODEC setting in Project Settings yet? "
Or if they do not show up in the Batch Reacquire window at all, click on the "!" button in the middle row. Most likely your clips will show up with a "standard mismatch" warning, which means that e.g. your clips are 16:9 and your hardware is currently set to 4:3, or that your clips are HD and your hardware is set to SD. Correct your hardware settings and your clips should show up.