- Openexruser Openexr Viewer For Mac Windows 10
- Openexruser Openexr Viewer For Macbook Pro
- Openexruser Openexr Viewer For Mac Os
When and if users will want to view their EXR images on a Mac, they will need to find and use an image viewer application that features support for this particular graphics format. 4,096 HITS filed under: view, EXR, image, viewer, High dynamic-range, picture, HDR. OpenEXR is widely used in host application software where accuracy is critical, such as photorealistic rendering, texture access, image compositing, deep compositing, and DI. OpenEXR is a project of the Academy Software Foundation. The format and library were originally developed by Industrial Light & Magic and first released in. The OpenEXR Image file type, file format description, and Mac, Windows, and Android programs listed on this page have been individually researched and verified by the FileInfo team. We strive for 100% accuracy and only publish information about file formats that we have tested and validated.
This page contains information about V-Ray's standalone VRImg to OpenEXR converter.
- OpenEXR is the visual effects industry-standard floating point file format and the best format to use when working with 32-bit HDR imagery.Access all the capabilities of OpenEXR from within Adobe Photoshop, After Effects, and Premiere Pro using ProEXR.
- The OpenEXR format is a high dynamic range image file format, similar to the HDR raster image format. This format is used to store images in high quality with a great color and luminance range. The EXR format is used and supported by many photo editing programs and other graphic editing applications.
Page Contents × |
Overview
The VRImg to OpenEXR converter is both a command-line utility and a simple GUI application that can be used to convert .vrimg image files to .exr files in OpenEXR format. The .vrimg file format is a special format used by an application's V-Ray Frame Buffer to store the rendered image incrementally while rendering, in full floating-point format, with all available render elements. The V-Ray Image to EXR Converter converts .vrimg files to EXR format so the render elements may be loaded into compositing software, where they can be used for compositing or fine-tuning at the render element level.
Installation
By default, the installation of V-Ray includes the vrimg2exr executable in the bin or tools folder found under [Program Files]Chaos GroupV-Ray[host app.]. A shortcut to the converter is also installed in the Start Menu under AllPrograms> Chaos Group > V-Ray for [Host app.] > Tools > VRImg to OpenEXR converter.
GUI Usage
Openexruser Openexr Viewer For Mac Windows 10
Running vrimg2exr without any parameters, or from the Start menu, will open the GUI version of the tool as seen above. The GUI allows you to convert one or a number of .vrimg files to OpenEXR files. You can also get information about the data stored in a .vrimg file.
Pixel type – Specifies whether the data in the .exr file is saved as 16-bit or 32-bit floating point numbers.
Compression type – Sets the compression type, choosing between the several available methods. If not specified, the ZIP method is used.
- None
- RLE - run length encoding
- ZIPS - one scanline at a time
- ZIP - in blocks of 16 scanlines
- PIZ - piz-bazed wavelet compression
- PXR24 - lossy 24-bit float compression
- B44 - lossy 4x4 pixel compression, fixed rate
- B44A - lossy 4x4 pixel compression
- DWAA - lossy DCT based, blocks of 32 scanlines
- DWAB - lossy DCT based, blocs of 256 scanlines
DWA compression level – A floating-point value that controls the compression level when using the lossy DWA compression methods.
Buffer size (in MB) – Sets the maximum allocated buffer size. By default, this value is set to 500 MB. If the image does not fit into the max buffer size, it is converted in several passes.
Data window – Tries to find the valid data window from the .vrimg file. This requires that the file can be read in one pass. The non-zero pixels in the alpha channel are used to determine the data window.
Available channels – Specifies which channels of the .vrimg file are written into the .exr file. Provides a list of all available channels found in the .vrimg file(s) once an input file or directory is selected.
Openexruser Openexr Viewer For Macbook Pro
Channels in separate files – When this option is enabled, each channel is written into a separate .exr file.
Multipart output – When this option is enabled, each channel is written into a separate OpenEXR2 'part'.
Input file mode – Selects the input file mode.
- Single input file – Only a single file is converted.
- Multiple input files – Multiple files are converted at once.
Input file – Specifies the .vrimg file when Single input file is selected as the Input file mode.
Running vrimg2exr without any parameters, or from the Start menu, will open the GUI version of the tool as seen above. The GUI allows you to convert one or a number of .vrimg files to OpenEXR files. You can also get information about the data stored in a .vrimg file.
Pixel type – Specifies whether the data in the .exr file is saved as 16-bit or 32-bit floating point numbers.
Compression type – Sets the compression type, choosing between the several available methods. If not specified, the ZIP method is used.
- None
- RLE - run length encoding
- ZIPS - one scanline at a time
- ZIP - in blocks of 16 scanlines
- PIZ - piz-bazed wavelet compression
- PXR24 - lossy 24-bit float compression
- B44 - lossy 4x4 pixel compression, fixed rate
- B44A - lossy 4x4 pixel compression
- DWAA - lossy DCT based, blocks of 32 scanlines
- DWAB - lossy DCT based, blocs of 256 scanlines
DWA compression level – A floating-point value that controls the compression level when using the lossy DWA compression methods.
Buffer size (in MB) – Sets the maximum allocated buffer size. By default, this value is set to 500 MB. If the image does not fit into the max buffer size, it is converted in several passes.
Data window – Tries to find the valid data window from the .vrimg file. This requires that the file can be read in one pass. The non-zero pixels in the alpha channel are used to determine the data window.
Available channels – Specifies which channels of the .vrimg file are written into the .exr file. Provides a list of all available channels found in the .vrimg file(s) once an input file or directory is selected.
Openexruser Openexr Viewer For Macbook Pro
Channels in separate files – When this option is enabled, each channel is written into a separate .exr file.
Multipart output – When this option is enabled, each channel is written into a separate OpenEXR2 'part'.
Input file mode – Selects the input file mode.
- Single input file – Only a single file is converted.
- Multiple input files – Multiple files are converted at once.
Input file – Specifies the .vrimg file when Single input file is selected as the Input file mode.
Input directory – Specifies the input files' directory when Multiple input files is selected as the Input file mode.
Output directory – Specifies the output directory for the .exr files when Multiple input files is selected as the Input file mode.
Filename – Specifies a search pattern for the input file names. Wildcards (*) can be used to define the pattern.
Subdirectories – When this option is enabled, all .vrimg files contained in subdirectories of the specified input directory are also converted.
Info – Provides information about the .vrimg file(s) once an input file or directory is selected.
Convert – Starts the conversion.
Command Line Usage
There are two methods for running the vrimg2exr converter from the command line. In both cases, the original .vrimg file is not deleted.
Converting a single .vrimg file to a single .exr file:
> vrimg2exr _file> [options]
In this case, the cannot contain wildcards. Note that the .exr extension is not added automatically to the output file name.
Converting multiple .vrimg files to multiple .exr files:
> vrimg2exr [options]
In this case, can contain the wild-card symbols '*' and '?'; the .vrimg files will automatically be converted to OpenEXR files with the .exr file extension.
Openexruser Openexr Viewer For Mac Os
Under Linux and OS X, parameters with wildcards must be placed within apostrophe symbols -'image_wildcard'. Otherwise the command line shell will automatically expand the wildcard into file list, which will force the program to terminate.
Options
One or more of the following options may be specified:
Option | GUI equivalent | Description |
|---|---|---|
| -info | Info button | Prints information about the .vrimg file (resolution, channels present, etc.). This is only supported for .vrimg files created with V-Ray versions 1.48.xx and higher. |
| -half | Pixel type drop-down | Stores the floating-point data in the .exr file as 16-bit floating point numbers. If this option is not specified, the data is stored as 32-bit floating point numbers. |
| -sRGB | - | Converts the RGB data from the .vrimg file to the sRGB color space before writing it to the .exr file. Without this option, no color conversion is performed. |
| -gamma | - | Applies the specified gamma value to the RGB colors before writing the .exr file. If this option is not specified, the data is stored in linear space. |
| -channel | Available channels drop-down | Only reads the specified channel from the .vrimg file and writes it as the RGB channel in the output file. No other channels are written to the .exr file. This option can be used to extract the different channels in the .vrimg file to separate image files. Use the -info option for a list of available channels in the file. |
| -compression | Compression type drop-down | Sets the compression type for the resulting .exr file. If not specified, ZIP compression is used. Currently supported values for are: none, zips, zip, piz, pxr24 |
| -bufsize | Buffer size spinner | The maximum buffer size per channel (in megabytes) that will be used for the conversion. If the image does not fit into that buffer size, the converter will process it in several passes. Larger buffer size means faster conversion, but, obviously, requires more memory. The default is 10 MB per channel, but a larger value, f.e. 100 or more is recommended for large files. A value of 0 removes the limit for the buffer. In that case it will try to load the image in one pass which may result in utilizing all available memory. |
| -dataWindow | Data window checkbox | Attempts to find a rectange in the image that stores non-zero data (based on the alpha channel) and only stores this data window in the OpenEXR file. |
| -separateFiles | Channels in separate files checkbox | Each render channel is written to its own OpenEXR file. If not specified, a single multichannel OpenEXR file is produced. |
| -multiPart | Multipart output | Each render channel is written to a separate 'part' inside a single OpenEXR file. This allows applications to load each render element separately which may speed up the work when there are many render channels. |
| -longChanNames | - | Enable channel names with more than 31 characters. The resulting OpenEXR file might not be compatible with applications using a version of the OpenEXR library older than version 1.7 |
| -help | - | Print all possible command-line parameters. |
