mrv2 and vmrv2 are open source professional players and review tools for VFX, animation and computer graphics for Windows, Linux and macOS. You can build them from source or download prebuilt binaries.
Binaries are available for multiple operating systems and CPU architectures. Be sure to download the correct one for your system, and check all release assets—GitHub often hides part of the list.
If you're unsure which download you need, use:
Two versions are available:
mrv2 with OpenGL backend (free and donationware) vmrv2 with Vulkan backend (free and donationware)
It has NOT been tested on Windows aarch64 (beta testers wanted).
Unlocking Features
To unlock donationware features, open:
Help->Unlock Features.
The same license works for both mrv2 and vmrv2, so you can have both installed. An internet connection is required for license activation.
Without a donation license, the following features are unavailable:
Full Annotations and Color Area Selection (Solo+)
Python (Standard+)
Editing (Edit+)
Voice and Link Annotations (Pro)
Unlimited WebRTC Remote Reviews (Pro)
The free version still includes:
Tone-mapping (OpenGL) and HDR (Vulkan)
OpenEXR layer switching
Saving Images and Movies with Audio
Limited WebRTC Remote Reviews (2 artists for 30 minutes)
Change Log
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Install: The macOS versions of mrv2 and vmrv2 are now code-signed and notarized. You should be able to install them much more easily by just dragging the icons to the Applications folder.
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UI: Added a progress indicator when unzipping .otioz files for editing.
- UI: Cancelling saving of a session upon exit now also avoids exiting the application.
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UI: Removed old Preferences->Thumbnails->Playlist Panel options.
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Edit: Editing clips is now faster (particularly from .otioz bundles).
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Edit: Fixed precision errors when Edit->Selected->Add Transition complaining clips were not contiguous. This was common with audio tracks at different Khz.
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Vulkan: Improved the start-up of the Vulkan version of mrv2.
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Vulkan: Improved the memory footprint and performance of drawing annotations on the Vulkan version of mrv2.
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Python: Added missing OpenEXR compressors to Python bindings.
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Python: Added new Python methods to control the values of the new OpenEXR compressors.
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Core/UI: Added more Missing Frame types. Currently supported:
- Error Frame - Reports an error.
- Hold Frame - Holds the last frame read.
- Scratched Frame - Holds the last frame read but draws a red cross.
- Black Frame - Replaces current frame with black.
- Skip Frame - Skips the current frame.
- Gap Frame - Adds an .otio Gap for the missing frames.
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Core: .otio files now support URI paths properly.
- Core/UI: Thumbnail cache is now independant from the main caches.
- Core: Cleaned up Timeline code.
- Core: Fixed opening of https:// movies due to incorrect handling of cacert.pem and https:// protocol. Now File->Open->URL Movie should work again.
- Core: Synced to tlRender v0.23.0, with several modifications.
- Core: Made ColorInteropID work both saving and loading.
Fixes
- Added OpentimelinIO tags to all formats, as some were missing them.
- Precision errors when Edit->Selected->Add Transition complaining clips were not contiguous. This was common with audio tracks at different Khz.
- File->Save Image on the Vulkan backend not paying attention to the HDR Export options.
- File->Save Image and File->Save Movies changing resolution when HDR Export was changed.
- Thumbnail size selection on monitors with DPI higher than 100%.
- A potential crash on the Vulkan backend on cleaning up thumbnail resources on program exit.
- YUV_444P_U12 movies are no longer attempted to decode in hardware, like SolLevante Netflix demo clip.
- Edit->Frame->Insert incorrectly leaving a wrong tail clip's range.
- Thumbnail pictures when pixelAspectRatio was different than 1.0.
- Fixed Secondary Viewport on Vulkan backend which would stutter (mainly on Windows).
Libraries
- OpenEXR v3.5.0 - with lossy HJ2K and ZSTD compressors.
- OpenJPH v0.32.0
- ZSTD v0.17.0
- libvpx v1.17.0
