A TID file is a so-called thumbnail index that belongs to the AVCHD standard. The file of an AVCHD video which is always named thumb.Tid can be found under 'AVCHDAVCHDTN' and contains the index for the thumbnails. The actual thumbnails are located in the Thumb.Tdt, which is located in the same folder.
These files are mainly used by the camcorders themselves to quickly preview in play or edit mode. Video editing programs can not load these files themselves.
AVCHD (Advanced Video Coding High Definition) is a standard for file-based recording and playback of high-definition video. Developed by Sony and Panasonic, it is mainly used in camcorders for the consumer market.
Most often resolving problems with opening TID files is very simple. Just install an appropriate program that supports such files. All of the listed programs support TID files, but may vary in offered function and purpose. Some programs may be capable only of viewing contents of TID 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 TID 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 Tru-Designer applications is not on the list, select "Browse" option in order to manually locate the directory where Tru-Designer has been installed.
Sometimes problems with opening TID files may not lie with the application itself, but can arise due to other causes, such as: