Club CDFreaks - Knowledge is Power - View Single Post - Menu button addition or modification

blutach · 12-05-2008

In any given PGC, each button can use one of the (user defined) colour schemes. But the CLUT is the same for each button in a given PGC. However, each colour scheme can be made up of different CLUT references and contrasts. It's up to you!

Adding a button in the navpacks does not make the button visible. For that, it needs the subpic pack to have, at that button location as defined in the navpacks (i.e. when you defined a new button), some sort of shape that is referenced to the 4 bits (B/P/E1/E2). Then you pick out, via the colour scheme, what colours and contrasts those bits correspond to (note the contrast for the background pixel (B) is almost always 0 = totally transparent).

The easiest way to examine this is to load a menu in DVD Sub Edit and have a look at the underlying bitmaps.

So, here's what I would do, assuming I'm using DVDRMP:

1. Prepare your menu foreground using whatever graphics prog you like (same as your #1).

2. In DVDRMP, right click in the menu PGC and select Add button. Define the button area and commands for each mode (noting that the position for WS and LB and PS will be different) and select a colour scheme (have regard to the colour scheme of the existing buttons - it will usually be 1 but DVDRMP defaults to 0) - this makes a new button in the navpacks. Save the DVD (modified files is good enough and copy them into the project folder) and exit.

3. Open the menu VOB in DVDSubEdit. Use the File → Edit subpic bitmap with external tool function to edit the subpic and add your new button shape in the correct area in terms of the 4 pixels (I simply use MS Paint unless the shape is highly complex). Save your modified BMP - remember to do this for all tracks (0x20, 0x21 etc) - and back in DVDSubEdit, save again.

Presto! You're done - no need for new authoring at all.

Regards

12-05-2008	#4 (permalink)
blutach CD Freaks Senior Member Join Date: Jun 2006 Location: Melbourne, Australia Posts: 843	Re: Menu button addition or modification - quickest method In any given PGC, each button can use one of the (user defined) colour schemes. But the CLUT is the same for each button in a given PGC. However, each colour scheme can be made up of different CLUT references and contrasts. It's up to you! Adding a button in the navpacks does not make the button visible. For that, it needs the subpic pack to have, at that button location as defined in the navpacks (i.e. when you defined a new button), some sort of shape that is referenced to the 4 bits (B/P/E1/E2). Then you pick out, via the colour scheme, what colours and contrasts those bits correspond to (note the contrast for the background pixel (B) is almost always 0 = totally transparent). The easiest way to examine this is to load a menu in DVD Sub Edit and have a look at the underlying bitmaps. So, here's what I would do, assuming I'm using DVDRMP: 1. Prepare your menu foreground using whatever graphics prog you like (same as your #1). 2. In DVDRMP, right click in the menu PGC and select Add button. Define the button area and commands for each mode (noting that the position for WS and LB and PS will be different) and select a colour scheme (have regard to the colour scheme of the existing buttons - it will usually be 1 but DVDRMP defaults to 0) - this makes a new button in the navpacks. Save the DVD (modified files is good enough and copy them into the project folder) and exit. 3. Open the menu VOB in DVDSubEdit. Use the File → Edit subpic bitmap with external tool function to edit the subpic and add your new button shape in the correct area in terms of the 4 pixels (I simply use MS Paint unless the shape is highly complex). Save your modified BMP - remember to do this for all tracks (0x20, 0x21 etc) - and back in DVDSubEdit, save again. Presto! You're done - no need for new authoring at all. Regards __________________ Les Last edited by blutach; 12-05-2008 at 15:50.