Convert vob to pvf

What is the difference between .vob and .pvf?

Description: A VOB file is a movie data file from a DVD disc, typically stored in the VIDEO_TS folder at the root of the DVD. It contains a majority of the data stored on the disc which includes video, audio, subtitles, DVD menus and other navigation contents. VOB files are usually formatted as MPEG-2 system streams and can be opened by various video playback programs.; The Portable Voice Format (PVF) is a digital audio file format primarily used for storing voice recordings. PVF files are designed to encapsulate voice data at various bit rates, making them suitable for applications where voice clarity and file size are critical, such as voicemail systems, interactive voice response systems, and other telephony applications. Unlike more common audio formats that aim for high fidelity and music playback, PVF focuses on the efficient encoding of speech, optimizing for intelligibility and compact file size.