Custom Search
|
|
Aviod Simple Mistakes When Mastering For Dvd
A few years ago replicators would only accept a DLT as a master for DVD replication, testing the functionality of the DVD had to be done only with the authoring program that created it, or by burning a DVD-R on a very expensive DVD burner and good only for testing. Now every replicator will accept a DVD-R as a master, weather is one layer or two layers, therefore checking the functionality of the disc is done using the actual master used for replication. The master is going to be copied exactly as it is presented to the replication facility, a bit per bit method is used, in other words the replicated DVDs will be a mirror copy of your master. Testing the disc, especially for link functionality is very important, the replication house will not test your disc for full functionality, or video and audio quality. The program used in the glass mastering and replication process is checking for the bit per bit loss (or test the copies against the master), and for compliance with the DVD specifications. Your DVD-R master may play well in a given DVD player, but it may not pass the compatibility and compliance test. The bad part here is that not all duplicators will tell you what the problem is (unless you insist), they’ll let you know your master did not pass and you’ll have to go back to the drawing table and figure it out yourself. One of the most common delays is caused by audio file non compliance. When making NTSC DVDs do not use PCM audio, convert your audio files to AC3 before importing into the authoring program or make sure your authoring software is converting PCM to AC3 automatically. PCM is used in PAL DVDs mastering and is accepted by the standard for PAL DVDs only. When making connections between various links in your menus, always use a direct command or destination, especially for the “back” button. Try not to use “go to the last menu” command when giving a command for the previous menu. This command may be misinterpreted by some DVD players and instead of going to the menu you think it should go, it executes a different command. If you have to make a DVD which contains ROM data besides the video program, never put that data in the same folder with the video files in the “VIDEO_TS” folder. Make a separate folder for that and name it accordingly “Data title”. DVD players will reject a disc that has “foreign” data in the “VIDEO_TS” folder and treat the disc as non-functional. Another important part in the mastering process is the media brand used for mastering, good quality brand names are and Verbatim, Mitsui and Taiyo Yuden. Saving a few bucks with cheaper brands is not worth. Testing the master on several different players will assure playability by various brands. Don't test the disc in the system used to burn it on. After completion of the master, it's important that you clearly mark it with a soft marker that will not affect the surface of the disc. Following these very basic steps, you should not have a problem with getting your project completed in time. You can always ask the replication house for direction; helping you will doing the master correctly will help them later in the manufacturing process. Article Directory: http://www.articledashboard.com Danubian has been working in the DVD duplication industry for the last 10 years and is currently the technical manager for Video Translation Systems. |
|