runtime.ReadMemStats(s0)
	if _, err := Decode(buf); err != nil {
		t.Fatal("Decode:", err)
	}
	runtime.ReadMemStats(s1)
	if heapDiff := int64(s1.HeapAlloc - s0.HeapAlloc); heapDiff > 30<<20 {
		t.Fatalf("Decode of %d frames increased heap by %dMB", frames, heapDiff>>20)
	}
}

func BenchmarkDecode(b *testing.B) {
	data, err := os.ReadFile("../testdata/video-001.gif")
	if err != nil {
		b.Fatal(err)