.UVVV file extension
To open .UVVV files on Windows, check the file’s origin: if it came from a DECE/UltraViolet workflow or a system that labels it as UltraViolet video, keep it with its accompanying assets/metadata rather than moving it alone.
To open a .uvvv file, treat it as a DECE/UltraViolet video track (MIME type video/vnd.dece.video). On most systems, you’ll need software or workflows that specifically support DECE/UltraViolet content; standard players may not recognize it by extension.
Last updated: October 13, 2026
Open on your device
Choose your operating system for a dedicated step-by-step opening guide.
How to open .UVVV files
Use these platform-specific instructions to open .UVVV files safely.
Windows
- Check the file’s origin: if it came from a DECE/UltraViolet workflow or a system that labels it as UltraViolet video, keep it with its accompanying assets/metadata rather than moving it alone.
- If double-clicking does not work, try opening it from within the application or system that produced/exported it (a DECE/UltraViolet-aware workflow is typically required), or inspect it as video/vnd.dece.video in your tooling that relies on MIME types.
Mac
- If the file was delivered as part of a DECE/UltraViolet package/workflow, open it using the same workflow/tool that provided it rather than relying on Finder/QuickTime by extension.
- If you are managing content types, treat it as video/vnd.dece.video (DECE) when setting file associations or server Content-Type mappings.
Linux
- Do not assume a standard player will recognize .uvvv by extension; keep it with any related DECE/UltraViolet assets it shipped with.
- For content serving/processing pipelines, map the extension to video/vnd.dece.video so tools that depend on MIME types handle it consistently.
iOS
- iOS apps typically rely on common video containers and extensions; if the file does not import/play, transfer it to a desktop environment that supports the original DECE/UltraViolet workflow that produced it.
Android
- If the file does not open in your gallery/player, treat it as DECE/UltraViolet content and move it to a desktop workflow that recognizes video/vnd.dece.video and the related DECE packaging/metadata.
Security notes
- .uvvv is associated with DECE video tracks and may involve encryption and controlled playback; avoid renaming it to a common extension to “force” playback, since that can confuse tools and lead to risky trial-and-error with untrusted parsers.
- Treat .uvvv files from untrusted sources cautiously: video container parsing is a frequent source of vulnerabilities in media libraries, and .uvvv may be handled by less-tested code paths due to its rarity.
- In content distribution systems, ensure .uvvv is served with the correct media type (video/vnd.dece.video) to avoid clients incorrectly sniffing/guessing formats and applying unsafe or unintended handlers.
Can't open this file?
These are the most common causes and fixes when .UVVV files fail to open.
Common reasons
- Nothing plays or the device says the file is unsupported
- Web/server delivery uses the wrong Content-Type
- File appears to be “MP4” but still won’t open
Fix steps
- Verify whether the file is part of a DECE/UltraViolet workflow/package and keep any associated files together.
- Handle the file as media type video/vnd.dece.video in your software stack (player/tooling must explicitly support this DECE type).
Recover a deleted or lost .UVVV file
If the file was deleted by mistake or the drive was formatted, data recovery software may be able to get it back. Stop writing to that drive right away, because new data can overwrite what you want to recover.
Windows software that recovers deleted or lost files from PCs and external drives such as HDDs, SSDs, USB drives and memory cards, after deletion, formatting or a crash.
Wondershare RecoveritWindows and Mac software that recovers deleted or lost files from computers and external drives such as HDDs, SSDs, USB drives and SD cards.
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OS-specific troubleshooting
What is a .UVVV file?
According to DECE device specifications, .uvvv is a Digital Copy Control (DCC) file that contains a video track and is mapped to the media type video/vnd.dece.video. DECE’s Common File Format & Media Formats spec defines details for this media type, including parameters such as codecs and whether the track is encrypted.
Background
The .uvvv extension is tied to DECE/UltraViolet, a framework used to package and manage digital video distribution. In DECE documentation, .uvvv specifically represents a video track file under the Digital Copy Control (DCC) model, and the associated official media type is video/vnd.dece.video.
In practical ecosystems, extension-to-MIME mappings used by tooling also map .uvvv to video/vnd.dece.video, which is important when serving these files from a web server or cataloging them in systems that infer type from extension.
Some software and services may describe .uvv/.uvvu/.uvvv as “Ultraviolet MP4 Video,” but the core standards cited for .uvvv focus on the DECE media type mapping and related parameters (including encryption flags and codec signaling). As a result, “it looks like a video file” does not guarantee it will play in a normal player—especially if the track is encrypted or intended for a controlled playback environment.
Common MIME types: video/vnd.dece.video
Other meanings of .UVVV
The description on this page could not be verified against an independent source and may not match your file. Known meanings of .UVVV:
Further reading
Authoritative resources for more details on the .UVVV format.
Common .UVVV issues
Nothing plays or the device says the file is unsupported
Many media players and mobile apps do not recognize .uvvv by extension, and DECE video tracks may be tied to a controlled playback environment rather than generic playback.
- Verify whether the file is part of a DECE/UltraViolet workflow/package and keep any associated files together.
- Handle the file as media type video/vnd.dece.video in your software stack (player/tooling must explicitly support this DECE type).
Web/server delivery uses the wrong Content-Type
If a server sends .uvvv as a generic type (or as a different video type), clients and downstream processors may mis-handle it. Tooling commonly maps .uvvv to video/vnd.dece.video.
- Configure your web server or application to serve .uvvv as video/vnd.dece.video.
- Confirm your pipeline recognizes the extension-to-MIME mapping used in common tooling for .uvvv.
File appears to be “MP4” but still won’t open
Some environments label UltraViolet-related files as MP4 video, but DECE specifications emphasize the DECE media type and parameters (including encryption flags). If encryption or DECE-specific signaling is present, a generic MP4 player may still fail.
- Check whether the DECE media parameters indicate encryption or a profile/codec combination your player doesn’t support.
- Use a workflow or toolchain intended for DECE/UltraViolet content rather than relying on a generic “MP4-capable” app.
FAQ
What does a .uvvv file contain?
DECE documentation defines .uvvv as a Digital Copy Control (DCC) file with a video track, mapped to the media type video/vnd.dece.video.
What is the correct MIME type for .uvvv?
video/vnd.dece.video (registered in the IANA Media Types registry and used in practical extension-to-MIME mappings).
Is .uvvv the same as a normal .mp4 file?
Some systems describe UltraViolet files as MP4 video, but the DECE specifications focus on the DECE media type and parameters (including an encryption indicator and codec/profile signaling). A generic MP4 player may not reliably handle it.
Why do I see related extensions like .uvv or .uvvu?
Some software/services group .uvv/.uvvu/.uvvv together as UltraViolet video-related files; .uvvv is specifically defined in DECE device documentation as the video-track DCC file type.
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