Are angle bracket (<>) and square bracket () characters supported in hyperlinks contained in images or videos that are embedded into Vault documents?
No. At this time angle bracket and square bracket characters cannot be used for hyperlinks that are contained in images or videos that are embedded into Vault documents.
The way to get around this is to remove those characters from any hyperlinks that are included in embedded images or videos within the affected source document.
Vault Help Documentation: N/A