CREATE TABLE table_18996 ("Abbr." CLOB, "Name" CLOB, "Picture Coding Types" CLOB, "Chroma Format" CLOB, "Aspect Ratios" CLOB, "Scalable modes" CLOB, "Intra DC Precision" CLOB)

what's the chroma format with name being high profile
SELECT "Chroma Format" FROM table_18996 WHERE "Name" = 'High profile'
SELECT "Chroma Format" FROM "table_18996" WHERE "Name" = 'High profile'