TECHNICAL CONDITIONS FOR THE PRODUCTION OF CD & DVD
CD 120 and 80 mm (CD 47.2441" and 31.4961")
The reflecting layer reflecting the laser beam can be in Silver or Gold.
Inner transparent part
The inner part of CD is transparent (clear) without the reflecting layer. The purpose of the transparent part is to cover the unevenness of varnishing, which may occur at the centre of CD (when it is printed on that area). If the reflecting layer covers the whole surface of the CD, the unevenness of the printing/varnishing can be visible and can cause disturbing visual effects.
Maximal diameter of the transparent part:
ø 36 mm – standard
ø 26 mm – optional
ø 19 mm – optional
Please, only select the non-standard dimension of the inner transparent part if it is absolutely necessary in preserving a design that needs to be printed across the whole disc surface. The whole reflecting layer must be covered by printing!
Maximum playing time and data capacity depending on the final recording radius
The relation between the playing time and data capacity is: 1s = 153600 Byte
“Fan CDs” – are CD’s that have the metallization only to a specific (smaller) diameter than a normal CD. This is used to create a final product with clear edges, often used in correlation with a non-circular design that covers the metallic area and some of the transparent border. The table above can help determine how much of the CD must be metallized to contain the amount of data/audio that you plan to include on the disc.
In case of production of the shaped discs it is necessary to add 2 mm to the above mentioned radii, to allow for a border around the cut edge protecting the data on the disc.
Capacity of the particular DVD types
The reflecting layer reflecting the laser beam can be Silver only. The reflecting layer is defined by the inside diameter of 36mm and by the outside diameter of 118mm.
How to prepare a suitable DVD master
All "DVD masters“ should be provided in a format ready to replicate. The format, and all the data should be directly usable for the replication process without carrying out any changes or adjustments. Our studio will only check the components of the supplied master, and that it is suitable for replication. Our studio will only carry out adjustment to the master if they are necessary in allowing it to meet the standards and recommendations for the DVD format ordered. Please ONLY send COPIES of your original masters, not your ONLY copy. We recommend sending 2 identical copies clearly identified as “master" and "backup copy". We will use the "backup copy" in order to minimize the risk of delays that could occur in case your “master” fails, and the material would otherwise need to be sent again.
Recommendation for preparing of complete DVD master
Location of the files on DVD-ROM discs or hybrid DVDs
Place the frequently used and short files (index files, database files, program files, …) (if the burning software so allows) at the beginning of DVD, where the access time is shorter. Place the long files, such as audio and video clips, at the end of the DVD. When reading these files, the access time is not decisive, but the transfer rate, which is higher at the edge of the disc in most of advanced mechanisms.
Check of content of DVD-ROM discs or hybrid DVDs
Check the content of prepared master with an antivirus program, with an updated virus database. Furthermore, compare the bit conformity as well as the number and sizes of files and directories of the resulting master with the original source data.
Check of functionality in computers
Burn the prepared master onto DVD disc and test the functionality on MULTIPLE computers, operating systems, DVD Players, etc. It is MOST important to check them on systems that are different from those computers and operating systems which the applications/content was developed. If the disc you burn does not work, the DVD’s we’re making will not work – we are replicating your master, not altering it, or improving it’s functionality in any way.
Check of functionality in standalone DVD players
We recommend test viewing of the complete DVD-Video disc in standalone DVD player (not only in the computer) prior to sending it to the production and checking the correct behaviour of the menu navigation, if contained in the disc.
Check of data integrity Check the data integrity by copying all the files from the prepared master to another medium (a hard disc for example).
Input sources for a DVD master
Pressed or burnt optical disc:
Fully functional pressed or burnt disc in the required DVD format. We do not accept shaped DVDs, business cards DVDs, DVD discs recorded in standalone DVD recorders, or DVDs with CSS protection or only partially removed CSS protection.
Methods of recording on DVD-R(W), DVD+R(W):
• singlesession (DAO – disc At Once) – RECOMMENDED
• multisession (SAO – Session At Once) – NOT recommended
DDP (Disc Description Protocol)format:
This is the worldwide standard for handing over the source data for production of optical discs; supported by all manufacturers of CD and DVDs, as well as by mastering studios and manufacturers of professional workstations for processing audio files and authoring DVDs. We recommend version 2.00, but we also accept version 2.10.
Please note: A DVD-ROM with DDP files is the most suitable way of suppling source materials for production of titles with CSS protection.