.264 file format is based on H.264 video codec standard. This format is able to store high quality video data at much lower bitrate.
This file format is also considered to be successor of many modern video file formats including DIVX, XVID and MPEG-4. .264 file is able to provide with the same video quality like that of MPEG-4 at much lower file size. Sometimes MPEG-4 part 10 is also referred to as .264 file format. .264 file format is also used for video recording and compression. It is a block oriented and motion compensating video compression format which is developed by ITU-T VCEG.
In addition to the problem described above, i.e. the lack of the appropriate application to support the .264 file, there may be several reasons that cause problems with opening and operation of the data format:
A quite common problem is the lack of application in the appropriate version. Even if you have an application, with the help of which you should open the .264 file, you may have a problem with it because of its version. Perhaps in previous versions the application has not yet supported the .264 file, so download the update and check again.
If you have already installed the appropriate application, and it is the correct version, the file may not open correctly, because the operating system does not have information that this program supports the file. So you need to "show" which program the computer should use. To do this:
It also happens that the file you want to open is corrupt and therefore there is no such possibility. In this situation, you should find its different version, or ask a person from whom you got, to send it again.