LanguageYSX
Yahoo! Player stream description language data
File type: Various data file
A ysx file extension is related to the Yahoo! Player stream description language data.
What is ysx file?
File type category:
Various data file
Date updated: December 12, 2018
The ysx file extension is associated with Yahoo! Player and used for files written in the stream description language.
Most likely some old format without support. No further information could be found.