From 3f2f4db5f6cd711dc96ef7c22a715c7b1d0eb9b1 Mon Sep 17 00:00:00 2001 From: Ben Hutchings Date: Mon, 6 Mar 2006 19:51:09 +0000 Subject: [PATCH] Added various notes and updated copyright date. --- README | 39 +++++++++++++++++++++++++++++---------- 1 file changed, 29 insertions(+), 10 deletions(-) diff --git a/README b/README index 3cd0e12..5b1c255 100644 --- a/README +++ b/README @@ -15,7 +15,7 @@ WebDVD depends on the following software: - dvdauthor - expat 1.x - Gtkmm 2.0 -- mjpegtools +- mjpegtools 1.6.x (1.8 makes an incompatible change in usage of ppmtoy4m) - Mozilla 1.7.x (later versions may work but are untested) - netpbm - Xvfb (from XFree86 or X.org) @@ -53,7 +53,20 @@ VOB-lists A VOB-list file is an XML file with the document element and containing elements as described in the dvdauthor manual page. The file names in a VOB-list file are resolved relative to the -directory containing the list file. +directory containing the list file. For example: + + + + + + +This will result in a title with the following chapters: + + 1: main.vob 0:00- 4:55 + 2: main.vob 4:55-12:13 + 3: main.vob 12:13-17:45 + 4: main.vob 17:45- end + 5: credits.vob Video standards @@ -93,10 +106,13 @@ Limitations Each page must fit within the frame - DVD players do not support scrolling menus and WebDVD currently is not able to split them into -multiple menus. Note also that the video frame is somewhat larger -than the visible area of a normal TV. For this reason WebDVD applies -a stylesheet to all pages that adds 60 pixels of padding on all sides -of the body. +multiple menus. The standard frame size for PAL and SECAM is 720x576 +pixels; for NTSC it is 720x480 pixels. The exact visible area varies +between TVs so the background should cover all or very nearly all the +frame whereas the important content such as text must not be placed +near the edge. For this reason WebDVD applies a stylesheet to all +pages that adds 60 pixels of padding on all sides of the body; this +doesn't apply to the background. Prior to Mozilla version 1.8, which I have not yet tested, Mozilla may signal that a page is completely loaded before any background images @@ -128,15 +144,18 @@ reduce link highlighting to 1 transparent and 3 opaque colours using Floyd-Steinberg dithering, which is certainly good enough for anti-aliased text but may not be so good for complex highlighting. -There is a limit of 99 "titlesets" (groups of video sequences) on a -DVD. Currently WebDVD does not attempt to group video sequences -together, so there is a limit of 99 video sequences altogether. +There is a limit of 99 "titles" on a DVD. If you need to include more +than this number of video sequences, you could arrange them as +chapters of a title, so long as they use the same codecs, resolution, +aspect ratio and sample rate. However, each chapter will run into the +next. If this is a real problem, let me know, and I may be able to +provide a better solution in a later version of WebDVD. Author and copyright -------------------- WebDVD was written by Ben Hutchings . -Copyright 2005 Ben Hutchings. +Copyright 2005-2006 Ben Hutchings. This software is based in part on the work of the Independent JPEG Group. Copyright 1991-1998 Thomas G. Lane. (This applies to the file jquant2.c.) -- 2.39.5