File stacking

XBMC's file stacking feature handles your multi-part videos in a clean, intuitive manner. File stacking combines your multi-part files into a single item in the file list or library. Playback of stacks is completely transparent to you as the user, all parts are automatically queued for playback in order. Stacking is a view option available in videos file mode window. It is always applied when scanning movies into the library.

File stacking only works for movies and does not work yet for TV shows.

How does file stacking work?
The stacking function is presented with a list of file items from a directory listing.
 * 1) Sort the file list alphabetically.
 * 2) PART1, PART2, ..., PART9 directories are collapsed if they contain only one video file.
 * 3) Each filename is tokenized into Title, Volume, Ignore and Extension parts.
 * 4) For each consecutive filename where all tokens except Volume match, the file's index in the file list is stored in a vector.
 * 5) Once the above condition fails...
 * 6) The stack path is generated (eg. "stack://movie-part1.mkv, movie-part2.mkv")
 * 7) The stack name is created from the Title Ignore and Extension tokens (eg. movie.mkv)
 * 8) The path and label of the first file item are replaced by the stack path and stack name, respectively.
 * 9) The remaining file items in the stack are removed from the file list.
 * 10) This continues until the file list is exhausted.

Stacking name extensions
The following are default stacking extensions that can be added to file names

# can be 1 through 9 or A through D. No spaces between the "part" and number.
 * part#
 * cd#
 * dvd#
 * pt#
 * disk#
 * disc#

You can also use: where # can be A through D.
 * moviename#.ext

Limits

 * Stacking is currently only applied to movies.
 * Stacking is currently only applied to filenames, not the full path.
 * The default expressions will NOT stack files which use only a number as the volume token (eg movie1.avi, movie2.avi). This is intentional due to false positives which can occur with sequels in a flat directory layout. Some solutions to this problem (in order of best to worst) follow...
 * Use a dir-per-movie directory layout, see the append example of the moviestacking advanced setting.
 * Rename offending files to match one of the more specific volume tokens (ie. cd1, part1, etc).
 * Create special-case regular expressions for those files that fail to stack (see ).

Fine tuning
File stacking can be tuned by the user to match obscure cases using the moviestacking advancedsettings.xml setting: