Differences between current version and predecessor to the previous major change of dvdauthor.

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Newer page: version 12 Last edited on Sunday, January 10, 2010 10:53:18 am by LawrenceDoliveiro
Older page: version 11 Last edited on Sunday, January 10, 2010 10:44:44 am by LawrenceDoliveiro Revert
@@ -30,13 +30,13 @@
 * The locations and dimensions of buttons are given to <tt>spumux</tt>. <tt>dvdauthor</tt> gets this information from the MPEG files generated by <tt>spumux</tt>. Also, buttons are referred to by user-specified names in both <tt>spumux</tt> and <tt>dvdauthor</tt>, even though DVD-Video doesn't support button names. 
 * <tt>spumux</tt> allows the specification of multiple graphic files, each potentially containing a different set of colours, even though DVD-Video subpictures only allow a maximum of 4 colours to be displayed at once from a maximum palette of 16 colours. <tt>spumux</tt> embeds information about the colours actually used, and <tt>dvdauthor</tt> collects this to correctly encode the generated subpicture pixels and build the complete palette. 
-Note a limitation : even though the [DVD-Video spec|DVDVideoTerminology] allows menus to have up to 4 colours in each of the states of normal, highlighted and selected, <tt>spumux</tt> requires the separate images to have a [total of 4 colours when combined |]. 
+Note a subtle point : menus can have 4 different colours, and the colours can be different between the different states of normal, highlighted and selected. But there is only one subpicture image shared between these three states, and having 2 bits per pixel, it is restricted to 4 different pixel values. Thus, even though you specify the appearance of the states with separate image files , <tt>spumux</tt> [combines them into one |] and will flag an error if the result cannot be represented within 2 bits per pixel
 <tt>dvdunauthor</tt> and <tt>spuunmux</tt> are very useful for trying to understand the structure of existing DVD-Video titles. Note, however, that <tt>dvdunauthor</tt> puts some additional tags into the XML files it creates that the current version (0.6.14) of <tt>dvdauthor</tt> doesn't understand. 
 Additional useful information about DVDAuthor has been collected at the [DVDAuthor Wiki |]. 
 ['Q' DVD-Author |] is a [GUI]-based tool to ease the job of [DVD] authoring. It can generate the [XML] files and command sequences necessary to drive the various CommandLine utilities in the <tt>dvdauthor</tt> suite. 
 <tt>qdvdauthor</tt> and the <tt>dvdauthor</tt> documentation examples make heavy use of the [MJPEG Tools |] package for generation of [MPEG] files and the like. However, all these operations can be performed just as readily with [FFmpeg].