Duplication Centre – DVD Master notes
To ensure your duplication runs perfectly, please read through these notes. If you have any questions please email technical@duplicationcentre.co.uk DVD MASTER NOTES We require your master on DVD-R or DVD+R format. For DVD Video be sure that you have authored your DVD using reputable software. DVD VIDEO MASTERING TECHNIQUES If you want your DVD to be playable in a normal DVD player you need to make sure that you have all the files and directories it is going to look for. In particular you need to have an "AUDIO_TS" and a "VIDEO_TS" directory. In order to produce a master DVD video disk that will work in a DVD player you have to make sure the files are physically in the correct order on the written disk. If you just write a disk as you would a data disk it almost certainly won’t play in a DVD player but may play on a computer. The reason for this is quite simple. When you insert a disk into a DVD player it scans the first few sectors looking for the file "VIDEO_TS.IFO". This file contains a list of sector offsets to find the title sets on the DVD. Unfortunately, alphabetically the file "VIDEO_TS.BUP" comes first and therefore most DVD writer software will burn this file first if they are writing a plain data disk. If the DVD player can't find the IFO file or finds another file first it generally gives up. A computer DVD player, on the other hand, understands the file system on the disk and can therefore find any file it wants with out having to know the offset values. It is also important that the VOB files are in the correct order as a DVD player just plays the data it finds, ignoring file boundaries, until it reaches the end. In fact a DVD player doesn't even understand files and only uses sector offsets to find data. HERE’S AN EXAMPLE OF A CORRECT VIDEO_TS FOLDER VIDEO_TS.IFO VIDEO_TS.VOB VIDEO_TS.BUP VTS_01_0.IFO VTS_01_0.VOB VTS_01_1.VOB VTS_01_2.VOB VTS_01_0.BUP VTS_02_0.IFO VTS_02_0.VOB VTS_02_1.VOB VTS_02_0.BUP