"OVA" redirects here. For other uses, see Ova.
Original video animation (オリジナル・ビデオ・アニメーション, Orijinaru bideo animēshon?), abbreviated OVA (オーブイエー or オーヴィーエー, ōbuiē or ōvīē?) (and sometimes as OAV), is a term originating from Japanese animation (anime) for animated films and series which are made specially to be released on home video formats. The majority are released direct-to-video, without prior showings on TV or in theatres, however, there may be very rare occasions where, for example, the first part of an OVA series is broadcast for promotional purposes. OVA titles were originally made available on VHS, later becoming more popular on LaserDisc and eventually DVD.
They're the same thing.