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What is the VEG file format?
VEG is a project file format associated with VEGAS Pro, a professional non-linear video editor originally developed by Sonic Foundry, then Sony, then MAGIX, and now by Boris FX. VEGAS Pro allows users to create and edit videos by adding audio and visual effects, transitions, and text overlays. VEG files store all project resources and settings - timeline tracks, edit decisions, and effect chains - and can be used to transfer settings between projects. The finished video is produced by rendering the project to a deliverable format such as MP4 or MOV.
VEG files can be exported to many popular video formats, while projects can also be saved to formats supported by competing tools.
VEGAS Pro is considered one of the most capable and approachable professional video editing applications, offering a wide array of plugins and editing tools plus broad support for formats used by professional audio-video devices. The application was developed by SONY until 2016, when it was acquired by MAGIX; Boris FX subsequently acquired it and continues to develop it actively.
A .veg project file does not embed the video footage itself - it only references source clips by file path, storing all edit decisions against those references. Moving a .veg without its media breaks all the links. VEGAS Pro is Windows-only, and older .veg files can be opened in newer versions, but the reverse is generally not supported.
Security & safety
RISK: LOWA .veg is a passive project file (edit decisions and media paths) with no executable code, so it is low risk to open. The practical caution is data loss, not malware: keep the .veg together with its source media, and rely on VEGAS auto-backups (.veg.bak / autosave) since a project saved in a newer VEGAS version may not reopen in an older one.
Format details
in a nutshellFULL NAMEVEGAS Pro Video Projectaka Vegas project file, Sony Vegas project
DEVELOPERBoris FX (current); previously MAGIX, Sony, and Sonic Foundrysince 1999 (Sonic Foundry Vegas)
CATEGORYVideo Files
MIME TYPEapplication/octet-stream
TYPEProprietary non-linear video/audio editing project (binary)
Programs that open VEG files
Windows2 apps
Vegas Movie Studio
Paid The consumer VEGAS editor can open many .veg projects, though Pro-only features may be missing. Open via File > Open. 
Vegas Pro
Paid File > Open the .veg in VEGAS Pro (the same or a newer version than the one that saved it). Keep the source media in place so links resolve. Technical details
deep spec| Format type | Proprietary binary non-linear editing project container; no public format specification or stable magic signature |
| Encoding | Binary, little-endian |
| Media storage | None - the file contains only edit decisions and references to external source media by file path; moving the project without its media breaks all links |
| Project contents | Timeline tracks, clip references with in/out points, transitions, audio and video effects chains, envelope automation curves, and render output settings |
| Typical file size | Tens of KB to a few MB; scales with project complexity, not source media duration |
| Auto-backup | VEGAS Pro writes a companion .veg.bak auto-save alongside the project file as a safeguard against data loss |
| Version compatibility | Forward-compatible - newer VEGAS Pro versions open older .veg files; opening a newer .veg in a significantly older version is generally not supported |
| Platform | Windows only; no macOS or Linux version of VEGAS Pro exists |
| MIME type | application/octet-stream (no specific registered MIME type) |
| Render output | Must be exported (rendered) to a deliverable video format - MP4, MOV, AVI, MXF, etc. - to produce a playable file |
| Ownership history | Sonic Foundry → Sony (2003) → MAGIX (2016) → Boris FX (2023) |
| Plugin support | Supports VST and VST3 audio plugins and OFX video effects plugins on the timeline |
| Related project formats | .vf (older Vegas project variant), .sfvp0 (Vegas auto-recovery file), .prproj (Adobe Premiere Pro equivalent) |
| File identification | No published stable magic signature; identified by extension and by successfully opening in VEGAS Pro |
| Released | 1999 (Sonic Foundry Vegas) |
| Latest version | Vegas Pro 2026 (released September 9, 2025; Boris FX moved to year-based naming) |
| Specification | www.vegascreativesoftware.com |
VEG conversions
Possible
.VEG .MP4GUIDE
Yes - open the project in VEGAS Pro and use Render As to export an MP4.
How to convert
.VEG .AAFGUIDE
Yes, VEGAS Pro can export a .veg project to AAF directly from the application - it is the only practical…
How to convert
.VEG .AVIGUIDE
Yes, you can get an AVI from a .veg project - open it in VEGAS Pro, use Render As, and select the AVI…
How to convert
.VEG .MP3GUIDE
Yes, you can get an MP3 from a VEG project -- open it in VEGAS Pro, then use Render As to export only the…
How to convert
.VEG .MOVGUIDE
Yes, you can get a MOV from a VEG project - open it in VEGAS Pro and use Render As to export MOV. There is no…
How to convert
.VEG .WMVGUIDE
You can produce a WMV from a VEGAS Pro project by opening the .veg in VEGAS Pro and rendering it to Windows…
How to convert
Not possible
Community Q&A
asked by usersFrequently asked questions
What is a .veg file?
A VEGAS Pro project file (the editor once called Sony Vegas, now owned by Boris FX). It stores your timeline, edits and effects plus links to your source clips - not the video itself - so it opens only in VEGAS Pro.
How do I open a .veg file?
Open it in VEGAS Pro (or VEGAS Movie Studio) on Windows, using the same or a newer version than the one that saved it. Keep the original media in place so the project can relink the clips.
Can I open a .veg without VEGAS Pro?
Not really - it's a proprietary project format with no free third-party viewer. You need VEGAS Pro/Movie Studio. If you only need the final video, ask whoever made it to render an MP4.
How do I turn a .veg into an MP4?
Open the project in VEGAS Pro and use Render As > MP4 (H.264/HEVC). You can't convert a .veg to MP4 without VEGAS and the source media, because the .veg only contains editing instructions.
Why won't my .veg open / it says wrong version?
A project saved in a newer VEGAS version generally won't open in an older one. Open it in the same or a newer VEGAS, or ask the sender to save/export a compatible version.
VEGAS asks to relink media when I open my .veg - why?
Because the .veg only stores file paths to your clips, not the clips themselves. If the media moved or was renamed, point VEGAS to the new location to relink it.
References
1Wikipedia - Vegas Pro (history and ownership)en.wikipedia.org
2VEGAS Creative Software - VEGAS Prowww.vegascreativesoftware.com
