diff --git a/tools/x264_disable_mc_mul.py b/tools/x264_disable_mc_mul.py
new file mode 100644
index 0000000..29513da
--- /dev/null
+++ b/tools/x264_disable_mc_mul.py
@@ -0,0 +1,66 @@
+import os
+from pathlib import Path
+from subprocess import Popen
+
+from speccpu import SPEC, check_bench_dir, find_build, get_benchspec_dir, x264
+
+
+def x264_disable_mc_mul(
+    spec_dir: Path,
+    spec_config: str,
+    spec_outputroot: Path,
+):
+    spec = SPEC(spec_dir)
+
+    x264_dir = get_benchspec_dir(spec_outputroot) / "625.x264_s"
+
+    check_bench_dir(x264_dir)
+    x264_build = find_build(x264_dir / "build")
+
+    assert x264_build.exists()
+    assert "x264_src" in os.listdir(x264_build)
+
+    mc_path = x264.get_mc_path(x264_build)
+    assert mc_path.exists()
+
+    mc_src = x264.MCBuilder().with_disabled_iscale_mul().build()
+
+    # Write mc_src to mc_path, recompile it, and replace resulting exe
+    with open(mc_path, "w") as f:
+        f.write(mc_src)
+
+    # Recompile
+    recompiled_x264_path = x264.recompile_mc(mc_path, x264_build, spec.env())
+    assert recompiled_x264_path.exists()
+    assert recompiled_x264_path.is_file()
+
+    # Execute that new binary
+    x264.update_exe(recompiled_x264_path, x264_dir / "exe")
+
+    with Popen(
+        spec.mkcmd_runcpu(
+            spec_config,
+            ["x264"],
+            setprocgroup=True,
+            workload="ref",
+            output_root=spec_outputroot,
+        )
+    ) as process:
+        process.wait()
+
+
+def main():
+    spec_path = Path("/home/lyc/spec2017-1.1.8-new")
+    x264_run_id = "f7e8503c-b8ca-47c9-879f-d1e73bbedc99"
+    x264_config = spec_path / "config" / f"{x264_run_id}.cfg"
+    x264_outputroot = Path("/home/lyc/work-ts/local/specOutput") / x264_run_id
+
+    x264_disable_mc_mul(
+        spec_path,
+        str(x264_config),
+        x264_outputroot,
+    )
+
+
+if __name__ == "__main__":
+    main()