>I am trying to write an ISO 9660 Joliet CD with a bunch of jpeg  
>files as its content.  It appears as though any files beyond a  
>certain quantity refuse to be displayed on the DVD player that I use  
>with my home entertainment system.  That DVD player requires Joliet  
>CDs for jpeg display purposes.

It is tough using an obsolete format in a modren world. It would be 
better to use ISO 13346 (aka UDF), which supersedes ISO 9660.

Joliet is a MS extension of ISO 9660 that augments 9660's 8.3 filenames 
with a separate table of longer file names. This is then mapped into 
generated 8.3 filenames using the first 6 letters of the filename, a 
tilda, and a sequence number.

You could be running into trouble if too many of your filenames are 
similar because that would generate identical 8.3 file names. This can 
happen with JPEGs that have been automatically named. You may want to 
process your filenames to eliminate identical letters on the front end.

ISO 9660 also has a bunch of restrictions on the depth of the directory 
structure (8 levels) and the total length of the path (255 characters). 
Etc.

So there are bunches of ways to hit a limit. Many applications are 
notorious for not handling these limits gracefully. Some hang. Some write 
the disc anyway and you get a disc that is probably unreadable.

P.S. I'm writing the above from memory, so some of the numbers may be 
slightly off. But this gives you an idea of the pitfalls of ISO 9660 and 
Joliet. 


*************************************************************************
**  List info, subscription management, list rules, archives, privacy  **
**  policy, calmness, a member map, and more at http://www.cguys.org/  **
*************************************************************************

Reply via email to