VOB to PRC Converter

Extract audio from DVD and save as Psion PRC format

Drop files here. 1 GB maximum file size or Sign Up
to
Facebook Amazon Microsoft Tesla Nestle Walmart L'Oreal

Psion Device Format

PRC serves legacy Psion applications — converting VOB audio to PRC provides content for these specialized handheld systems.

Quick Extraction

Audio-only processing is lightweight — VOB to PRC conversion completes rapidly on our cloud servers.

Secure Conversion

Your VOB uploads are deleted after processing. PRC outputs are automatically removed within 24 hours.

How to convert VOB to PRC

1

Select files from Computer, Google Drive, Dropbox, URL or by dragging it on the page.

2

Choose prc or any other format you need as a result (more than 200 formats supported)

3

Let the file convert and you can download your prc file right afterwards

About formats

VOB (Video Object) is the primary container format used on DVD-Video discs, defined as part of the DVD specification developed by the DVD Forum. The format first appeared with the DVD standard finalized in September 1996 and has since been used on billions of DVD discs produced worldwide. VOB files are based on the MPEG-2 program stream format, containing multiplexed MPEG-2 video alongside audio in AC-3 (Dolby Digital), DTS, MPEG-1 Layer II, or LPCM formats. Beyond audio and video, VOB files also carry DVD subtitle streams as bitmap overlays, navigation data for menu interaction, and chapter point information. The files reside in the VIDEO_TS directory on a DVD disc, with naming conventions (VTS_01_1.VOB, etc.) reflecting the title and part structure of the content. Individual VOB files are limited to approximately 1 GB to accommodate the UDF file system requirements, with longer content spanning multiple files seamlessly. The format supports both NTSC (720x480) and PAL (720x576) video resolutions at bit rates up to 9.8 Mbps for combined audio and video. Integration of video, multi-track audio, subtitles, and navigation into a single program stream made VOB a complete solution for consumer movie delivery. While streaming and newer disc formats have supplanted DVD for new content, VOB remains hugely relevant for accessing the vast library of existing DVD content.
Developer: DVD Forum
Initial release: September 1996
PRC is an audio file format associated with Psion) handheld organizers, particularly the Series 3 and Series 5 lines from the 1990s. These pocket computers included built-in microphones and basic voice recording capabilities, storing captured audio in the PRC container. The encoding is typically ADPCM-based (Adaptive Differential Pulse-Code Modulation), balancing file size against audio intelligibility given the severe storage constraints of early PDAs — the original Psion Series 3 had just 256 KB of RAM doubling as storage. PRC audio is generally mono at low sample rates (often 8 kHz), optimized for speech rather than music. One advantage was tight integration with the EPOC operating system (later evolving into Symbian), letting users embed voice notes directly in agenda entries and database records. The compact file sizes — a minute of speech consumed only a few kilobytes — made it feasible to store dozens of memos on devices with minimal memory. While PRC audio is a legacy format today, conversion tools exist for extracting recordings from archived Psion devices, which remain collectible among retro computing enthusiasts.
Developer: Psion PLC
Initial release: 1993

Frequently Asked Questions

Why convert VOB to PRC?

PRC (Psion Record) is needed for Psion PDA applications and specific embedded systems that use this proprietary audio format.

What opens PRC files?

Psion devices, specialized emulators, and audio tools supporting the Psion ecosystem handle PRC audio playback.

Is PRC widely supported?

PRC is a niche format tied to Psion hardware. For general use, MP3 or WAV are better choices — PRC serves specific legacy needs.

Does PRC support high quality?

PRC is designed for compact voice recordings on handheld devices. Quality is adequate for speech but limited for music.

Can I convert multiple files?

Upload several VOB files and extract each audio track to PRC in parallel — download individually when processing finishes.