M4V to WVE Converter

Turn M4V Apple video audio into Psion WVE format online

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Retro PDA Format

Bridge Apple M4V video with vintage Psion handhelds. WVE is the only way to get audio content playing on SIBO-based pocket computers.

Online Conversion

No Psion development tools or Apple software required. Our servers extract M4V audio and encode WVE — upload and download from anywhere.

Modern to Classic

Take audio from modern Apple M4V video and deliver it in WVE — a format that vintage Psion hardware plays without any modification.

How to convert M4V to WVE

1

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

2

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

3

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

About formats

M4V is a video container format developed by Apple Inc. and introduced alongside the iTunes Video Store in October 2005. Technically, M4V is nearly identical to the standard MP4 format (MPEG-4 Part 14), with the primary distinction being optional FairPlay DRM protection applied to purchased content from the iTunes Store. Unprotected M4V files are fully compatible with any player that handles MP4, as the underlying container structure and codec support are the same. The format typically contains H.264 video and AAC audio, supporting resolutions up to 4K and features like chapter markers, subtitle tracks, and metadata tags for title, artwork, and ratings. Apple chose the M4V extension to distinguish iTunes content from generic MP4 files, primarily so that DRM-protected purchases would be recognized by the Apple ecosystem of devices and software. M4V files play natively on macOS, iOS, iPadOS, and Apple TV, and unprotected versions work seamlessly in most major media players across all platforms. The format gained significant traction as the iTunes Store became a dominant platform for purchasing and renting digital movies and TV shows. Compatibility with the broader MP4 ecosystem means that video and audio streams within DRM-free M4V files can be processed by virtually any modern editing or transcoding tool without conversion.
Developer: Apple Inc.
Initial release: October 2005
WVE is the audio format native to the Psion Series 3 family of personal digital assistants, released by British company Psion PLC beginning in September 1991. These clamshell PDAs included a built-in voice recorder, and all dictation functionality relied on WVE files to store captured sound. Each file begins with the ASCII signature "ALawSoundFile**" followed by a minimal header, then raw A-law encoded audio sampled at 8 kHz — a rate inherited from digital telephony standards. At 8000 bytes per second, a one-minute recording occupies just 480 KB, which was essential given that Psion devices stored data on SRAM cards typically ranging from 128 KB to 2 MB. The A-law encoding provides reasonable speech clarity within these tight storage constraints, prioritizing intelligibility over high-fidelity reproduction. WVE files can be converted to WAV or other modern formats using SoX, Awave Studio, or specialized Psion file utilities. While the format is firmly a product of early-1990s handheld computing, it holds historical significance as one of the first audio recording formats designed for pocket-sized consumer devices. Collectors and researchers studying mobile computing history occasionally encounter WVE files when recovering data from legacy SRAM media.
Developer: Psion PLC
Initial release: 1991

Frequently Asked Questions

Why convert M4V to WVE?

WVE is the native audio format for Psion SIBO PDAs. Converting M4V audio lets you play Apple video soundtracks on vintage Psion devices.

Which Psion models support WVE?

Psion Series 3, 3a, 3c, and Siena models play WVE natively. These pocket computers from the 1990s use WVE as their audio standard.

How does A-law encoding sound?

A-law provides telephony-grade audio quality. Speech from M4V videos sounds clear on Psion speakers, though music loses fidelity.

Do iTunes M4V files convert?

Only unprotected M4V files can be processed. DRM-protected iTunes content is not supported for conversion to WVE or any format.

Is WVE still relevant?

WVE serves retro computing enthusiasts and archivists maintaining classic Psion hardware. It remains the way to get audio on SIBO PDAs.