EXRSTDATTR(1) User Commands EXRSTDATTR(1) NAME exrstdattr - set exr image metadata SYNOPSIS exrstdattr [commands] infile outfile DESCRIPTION Read OpenEXR image file infile, set the values of one or more attributes in the headers of the file, and save the result in outfile. Infile and out- file must not refer to the same file (the program cannot edit an image file "in place"). Command for selecting headers: -part i If i is greater than or equal to zero, and less than the number of parts in the input file, then the header for part i becomes "cur- rent." If i is "any" or -1, then all headers become current. Subse- quent attribute setting commands affect only the current header or headers. All headers are current before the first -part command. For example, the command sequence -focus 3 -part 2 -aperture 8 -expTime 0.01 -part any -owner luke sets the focus and owner attributes in all headers, as well as the aperture and expTime attributes in the header of part 2. Commands for setting attribute values: -chromaticities f f f f f f f f CIE xy chromaticities for the red, green and blue primaries, and for the white point (8 floats) -whiteLuminance f white luminance, in candelas per square meter (float, >= 0.0) -adoptedNeutral f f CIE xy coordinates that should be considered "neutral" during color rendering. Pixels in the image file whose xy coordinates match the adoptedNeutral value should be mapped to neutral values on the dis- play. (2 floats) -renderingTransform s name of the CTL rendering transform for this image (string). This attribute is deprecated. -lookModTransform s name of the CTL look modification transform for this image (string). This attribute is deprecated. -xDensity f horizontal output density, in pixels per inch (float, >= 0.0) -owner s name of the owner of the image (string) -comments s additional information about the image (string) -capDate s date when the image was created or captured, in local time (string, formatted as YYYY:MM:DD hh:mm:ss) -utcOffset f offset of local time at capDate from UTC, in seconds (float, UTC == local time + x) -longitude f -latitude f -altitude f location where the image was recorded, in degrees east of Greenwich and north of the equator, and in meters above sea level (float) -focus f the camera's focus distance, in meters (float, > 0, or "infinity") -expTime f exposure time, in seconds (float, >= 0) -aperture f lens apterture, in f-stops (float, >= 0) -isoSpeed f effective speed of the film or image sensor that was used to record the image (float, >= 0) -envmap s indicates that the image is an environment map (string, LATLONG or CUBE) -framesPerSecond i i playback frame rate expressed as a ratio of two integers, n and d (the frame rate is n/d frames per second) -keyCode i i i i i i i key code that uniquely identifies a motion picture film frame using 7 integers: * film manufacturer code (0 - 99) * film type code (0 - 99) * prefix to identify film roll (0 - 999999) * count, increments once every perfsPerCount perforations (0 - 9999) * offset of frame, in perforations from zero-frame reference mark (0 - 119) * number of perforations per frame (1 - 15) * number of perforations per count (20 - 120) -timeCode i i SMPTE time and control code, specified as a pair of 8-digit base-16 integers. The first number contains the time address and flags (drop frame, color frame, field/phase, bgf0, bgf1, bgf2). The sec- ond number contains the user data and control codes. -wrapmodes s if the image is used as a texture map, specifies how the image should be extrapolated outside the zero-to-one texture coordinate range (string, e.g. "clamp" or "periodic,clamp") -pixelAspectRatio f width divided by height of a pixel (float, >= 0) -screenWindowWidth f width of the screen window (float, >= 0) -screenWindowCenter f f center of the screen window (2 floats) -string s s custom string attribute (2 strings, attribute name and value) -float s f custom float attribute (string + float, attribute name and value) -int s i custom integer attribute (string + integer, attribute name and value) Other options: -erase s remove attribute with given name -h, --help print this message --version print version information REPORTING BUGS Report bugs via https://github.com/AcademySoftwareFoundation/openexr/issues or email security@openexr.com COPYRIGHT Copyright (C) Contributors to the OpenEXR Project License BSD-3-Clause OpenEXR 3.4.15 https://openexr.com August 2026 EXRSTDATTR(1)
NAME | SYNOPSIS | DESCRIPTION | REPORTING BUGS | COPYRIGHT
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