p0, p1 := uint8(0), g1.Disposal[i]
		if go1Dot5Fields {
			p0 = DisposalNone
		}
		if p0 != p1 {
			t.Errorf("frame %d: disposal values differ: %d and %d", i, p0, p1)
		}
	}
}

func TestEncodeAllGo1Dot4(t *testing.T)                 { testEncodeAll(t, false, false) }
func TestEncodeAllGo1Dot5(t *testing.T)                 { testEncodeAll(t, true, false) }