The introduction of WMV 9 marked the first time that interlaced video, frame interpolation, and non-square pixels were natively supported by the Windows Media Video format.
ການນໍາສະເຫນີຂອງ WMV 9 ຫມາຍເປັນຄັ້ງທໍາອິດທີ່ interlaced ວິດີໂອ, ພາແກ້ໄຂ, ແລະບໍ່ແມ່ນຕາລາງ pixels ໄດ້ສະຫນັບສະຫນຸນ natively ໂດຍຮູບແບບ Windows Media Video.