Differences between version 25 and predecessor to the previous major change of DVDVideo.
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| Newer page: | version 25 | Last edited on Monday, July 13, 2009 3:14:28 pm | by LawrenceDoliveiro | Revert |
| Older page: | version 23 | Last edited on Saturday, January 31, 2009 1:30:35 pm | by LawrenceDoliveiro | Revert |
@@ -3,9 +3,9 @@
!Directory and File Structure
At the top level of a DVD-Video disc, there are two directories: "AUDIO_TS" and "VIDEO_TS", where the "TS" stands for "titleset". A title set is a set of titles, where a "title" might be the entire movie, or an extra like a documentary about the making of the movie, or an episode of a TV series. The AUDIO_TS directory is only used on DVD-Audio discs, which are quite rare, nevertheless the DVD-Video spec requires it to be present, even though it is empty.
-The VIDEO_TS directory is where all the real content of a DVD-Video disc is kept. It contains files with names ending in .IFO, .BUP and .VOB. The .IFO (info) files contain overall information about the titles, including the entry into the menu structure. The .BUP files are backup copies of the .IFO files, supposed to be kept on a physically separated area of the disc to increase reliability. And the .VOB (video object) files are [MPEG] files containing the actual titles and menus--menus are also MPEG movies, not that different from titles (apart from usually being much shorter).
+The VIDEO_TS directory is where all the real content of a DVD-Video disc is kept. It contains files with names ending in .IFO, .BUP and .VOB. The .IFO (info) files contain overall information about the titles, including the entry into the menu structure. The .BUP files are backup copies of the .IFO files, supposed to be kept on a physically separated area of the disc to increase reliability. And the .VOB ([
video object|http://www.mpucoder.com/DVD/vobov.html]
) files are [MPEG] files containing the actual titles and menus--menus are also MPEG movies, not that different from titles (apart from usually being much shorter).
Each MPEG file is allowed to contain just one video stream, one navigation stream, up to eight audio streams (for soundtracks in different languages), and up to 32 "subpicture" streams. At any moment during playback, the player will be playing one video stream, one audio stream, and possibly one subpicture stream, overlaid on the video stream. And of course processing the navigation stream to decide what to do next.
While an audio stream may have different numbers of channels (e.g. 2-channel stereo, 5.1 surround) and use a couple of different codecs, the sample rate must always be 48kHz.
@@ -35,12 +35,12 @@
Here endeth the good parts. The evil parts are described in [DVDVideoEvils].
!!See Also
-* [DVD-Video Information|http://dvd.sourceforge.net/dvdinfo/] collected at ~SourceForge
-* The only info page accessible at <tt>
mpucoder.com</tt> without an account is this one on [VOB files|http://www.mpucoder.com/DVD/vobov.html].
+* Lots of info now publicly accessible at [mpucoder.com|http://www.mpucoder.com/DVD/] including data structure diagrams and articles.
+
* [DVD-Video Information|http://dvd.sourceforge.net/dvdinfo/] collected at ~SourceForge, including copies of previously-inaccessible stuff from
mpucoder.com
* Lots of links [here|http://www.le-hacker.org/dvd.html] to information, draft specs etc on MPEG, codecs, filesystems, device commands and other stuff.
* lots of info at [mpeg.org|http://www.mpeg.org/MPEG/dvd.html]
* Pioneer's [DVD Technical Guide|http://pioneer.jp/crdl/tech/index-e.html]
* [DVD Workshop|http://stream.uen.org/medsol/dvd/home.html]
* [Archived packet details|http://web.archive.org/web/20011024182535/dvdpro.com/dvd.htm]
* The [Unofficial DVD Specifications Guide|http://www.dvd-replica.com/DVD/index.php] -- commercial site, some info available for free.
