[Libguestfs] Virtualbox vdi Input Format and man pages

Hi, I am new to v2v/libguestfs. I need to convert a 30 GB virtual machine running Windows7 64 bit (a guest on a Linux system) from Virtualbox vdi format to qcow2 (or raw/img--another debate in itself) so I can use libvirt/qemu/kvm to run it and completely migrate away from Virtualbox. The vdi machine is a mission critical production environment and I cannot afford to mess it up, etc. Will keep original vdi intact until have successfully converted and tested. I have done some research and come upon v2v which seems to be just what the doctor ordered except that, in "local" man pages of version 1.36.4 which I have installed, there is NO mention of vdi compatibility as input format. However, on these online man pages <https://linux.die.net/man/1/virt-v2v> I see a section called "Local VirtualBox guests" which seems to indicate that vdi is indeed accepted as input format. Can anyone provide feedback as to the above? v2v seems to be a tool I could use to more easily deal with this conversion/migration than just using qemu-img convert and having to then deal with the other bits and pieces such as virtio drivers, etc. Thanks for any helpful feedback and pointers.