DVDSTEPBYSTEP.COM  
Thursday Jul 24, 2014

DVD STUDIO PRO

FAQS

The Lay Of The Land

Fast Track From Final Cut Pro to DVD SP

Quick Menu From Photoshop to DVD SP

Using VTS Views

Setting Build Folder

Quick Compressor Overview

Layered Menus

Transitions In Menus

Rotating Drop Zones

Quick Mapping (early verions)

More Mapping Examples

Using Motion to Create
Animated Backgrounds (FADE IN )

Using DVD SP Assets From Templates

Auto Assigning Buttons/
More Button Creation-Mapping

Semi/Pseudo Animated Rollovers Sort Of

Basic Return To Menu

Track Markers Jumps

Stories Details

Scriptless Play All/Scene Selection

Stories & Jumps

Random Return To Menus

Make A "Secret" Passcode

Using Scripts For Preferences (Audio Selection)

Random Fun (Making Random Jumps to Material)

Bit Shift Bingo

DVDSTEPBYSTEP.COM / VBR/CBR

Broad stroke here

CBR allocates the same rate across all frames, VBR allocates more bits to the frames where they need them and less where they do not. 2 Pass puts the bits where they are needed also in the areas of the frame.

Example - Picture a Red Circle on a Black background, not moving, for 20 seconds of a clip. Then the next 20 seconds is a tree blowing in the wind in front of a wall (Yeah kind of strange movie, isn't it?)

CBR (lets say setting of 5) would allocate 5 to every frame, the Circle and the trees, which really does not make alot of sense since the Circle is not moving and stays the same across all 20 seconds and the trees are moving.

If the Circle for the most part would look the same at 3, using VBR will take more bits from the Circle and allocate it to the tree section. (Remember the Compressor in VBR is looking for an average target rate.)

1 Pass VBR will take the bits not needed for the Circle and move them to the tree clip, spread evenly acrosss the frame. Which again has an issue - the wall is not moving, the trunk of the tree is not moving. Two Pass will take more of the bits away from the stationary part of the frame (the wall and trunk) and move more of them to where the leaves are moving.

Anyway also note that there is a cap on how much data is DVD Spec, audio and video is 10.08 Mbps (9.8 for video), I usually budget for less though, sometimes higher rates on burned DVD-Rs can cause stuttering//glitching, and also discs full to the brim also have issues on some players. I usually aim for the least rate that looks the best.

 

All material ©2006 Drew13 and the respective owners of materials