The YUV extension is associated with files that contain either bitmap images or YUV-format videos. The image information in such files is in a different color space and data format than the usual RGB.
A bitmap image consists of points that must be described individually. For RGB, this information is available as values for the red, green, and blue color components. Depending on the bit depth, eg 8 or 16 bits, different colors can be displayed.
In YUV format, the image information is displayed differently. Here, the information is separated into values for the brightness (luminance) as the Y value and the color values (chrominance) that are mapped with U and V.
The YUV format has been developed for use with analog television for the PAL and SECAM standards in order to maintain compatibility with black and white devices.
Most often resolving problems with opening YUV files is very simple. Just install an appropriate program that supports such files. All of the listed programs support YUV files, but may vary in offered function and purpose. Some programs may be capable only of viewing contents of YUV files or offer file conversion options, but may not be capable of editing such files.
It is possible that although a compatible program has been installed on user’s system, it is not used by the system to open it. This may happen because no default application was associated with this type of files. To associate YUV files with given application, select "Open with" from drop-down menu (accessed by right-clicking on the file). Then select from the list the program or application you want to be used to open this type of file. If the XnView applications is not on the list, select "Browse" option in order to manually locate the directory where XnView has been installed.
Sometimes problems with opening YUV files may not lie with the application itself, but can arise due to other causes, such as: