CREATE TABLE table_7593 ("Format name" CLOB, "Container" CLOB, "Video coding" CLOB, "Bit depth" FLOAT, "Color sampling" CLOB, "Frame size" CLOB, "Video bit rate ,  Mbit/s" CLOB, "Audio coding" CLOB)

What type of video coding has a format name of dvcam?
SELECT "Video coding" FROM table_7593 WHERE "Format name" = 'dvcam'
SELECT "Video coding" FROM "table_7593" WHERE "Format name" = 'dvcam'