CREATE TABLE table_7596 ("Format name" TEXT, "Container" TEXT, "Video coding" TEXT, "Bit depth" FLOAT, "Color sampling" TEXT, "Frame size" TEXT, "Video bit rate ,  Mbit/s" TEXT, "Audio coding" TEXT)

What bit depth average has a video bit rate, Mbit/s of 25 (cbr), and 4:1:1 as color sampling?
SELECT AVG("Bit depth") FROM table_7596 WHERE "Video bit rate, Mbit/s" = '25 (cbr)' AND "Color sampling" = '4:1:1'
SELECT AVG("Bit depth") FROM "table_7596" WHERE "Color sampling" = '4:1:1' AND "Video bit rate, Mbit/s" = '25 (cbr)'