CREATE TABLE table_34664 ("Year" FLOAT, "English title" TEXT, "Original title" TEXT, "Country" TEXT, "Length" TEXT, "Participation as" TEXT)

Participation as of actor, film editor has what average year?
SELECT AVG("Year") FROM table_34664 WHERE "Participation as" = 'actor, film editor'
SELECT AVG("Year") FROM "table_34664" WHERE "Participation as" = 'actor, film editor'