VRO is a digital audiovisual file format for streaming DVD recordings. When generated, this file usually comes with an IFO file for providing the location information of the VRO file. Generally, VRO is like a collection of VOB files. However, fragmented VROs are not widely supported.
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OGG is a free audio container format developed by Xiph.Org Foundation. Its unrestricted design offers efficient manipulation and streaming of high-quality digital multimedia. It multiplexes multiple streams for video, audio, text, and metadata. OGG has a filename extension of .ogg, although it can also come in .ogv, .oga, .ogm, .opus, and .spx.
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