ISO9660 is limited to 8 characters,ISO9660(Joliet) is limited to 64 characters,UDF 1.02 allows 128 characters.DVD-Video must be UDF 1.02 but some burn software use UDF+Joliet(bridge) for backward compatibilty,there's also UDF 1.5 and 2.01 which is used for data(packet writing).
If you want best compatibilty for all PC's use ISO9660(Joliet) for CD's and UDF+Joliet for DVD's.
what kind of DVDs are you referring to? data or video?
what i'm interested is: what's best for a data DVD? ISO or UDF+ISO?
does a UDF+ISO type disc contain all the ISO data of a regular ISO type discs?
One Ring to rule them all, One Ring to find them,
One Ring to bring them all and in the darkness bind them
In the land of Mordor, where the Shadows lie
-- JRRT
M.C. Escher - Reptilien