diff --git a/ivas_processing_scripts/audiotools/convert/omasa.py b/ivas_processing_scripts/audiotools/convert/omasa.py
index 68c66cbad16d4b8867f68f4dbfa46b3f1bfc535b..4da18127de566957c3aecf66e4107e9721b8e2e2 100644
--- a/ivas_processing_scripts/audiotools/convert/omasa.py
+++ b/ivas_processing_scripts/audiotools/convert/omasa.py
@@ -61,7 +61,7 @@ def convert_omasa(
         omasa.audio[:, : omasa.num_ism_channels],
         omasa.fs,
     )
-    oba.metadata_files = copy(omasa.metadata_files)
+    oba.metadata_files = omasa.metadata_files[:-1]
     oba.object_pos = copy(omasa.object_pos)
     masa = audio.fromarray(
         "MASA"
diff --git a/ivas_processing_scripts/audiotools/convert/scenebased.py b/ivas_processing_scripts/audiotools/convert/scenebased.py
index a2b4222641acefc566bfd5e3126298cdf6a55bad..b633f6e73052379661ce47eb4bb00ff160b730df 100755
--- a/ivas_processing_scripts/audiotools/convert/scenebased.py
+++ b/ivas_processing_scripts/audiotools/convert/scenebased.py
@@ -197,9 +197,7 @@ def render_sba_to_masa(
     masa_out: audio.MetadataAssistedSpatialAudio,
 ) -> None:
     num_tcs = masa_out.num_channels
-    md_out_path = masa_out.metadata_file
-
-    masa = masaAnalyzer(sba_in, num_tcs, masa_out.dirs, md_out_path)
+    masa = masaAnalyzer(sba_in, num_tcs, masa_out.dirs, masa_out.metadata_file)
     masa_out.audio = masa.audio
 
 
diff --git a/ivas_processing_scripts/audiotools/wrappers/masaAnalyzer.py b/ivas_processing_scripts/audiotools/wrappers/masaAnalyzer.py
index dde8bbdc766960de007a90d98ceef5032aff00ce..3eea5dbea6231960a4fad73bec00ff0d7745a411 100644
--- a/ivas_processing_scripts/audiotools/wrappers/masaAnalyzer.py
+++ b/ivas_processing_scripts/audiotools/wrappers/masaAnalyzer.py
@@ -31,6 +31,7 @@
 #
 from pathlib import Path
 from tempfile import TemporaryDirectory
+from typing import Optional
 
 from ivas_processing_scripts.audiotools import audio
 from ivas_processing_scripts.audiotools.audiofile import write
@@ -40,7 +41,10 @@ from ivas_processing_scripts.utils import find_binary, run
 
 
 def masaAnalyzer(
-    sba: audio.SceneBasedAudio, num_tcs: int, num_dirs: int, metadata_out_path: Path
+    sba: audio.SceneBasedAudio,
+    num_tcs: int,
+    num_dirs: int,
+    metadata_out_filename: Optional[Path] = None,
 ) -> audio.MetadataAssistedSpatialAudio:
     """
     Wrapper for masaAnalyzer (from MASA reference software)
@@ -51,8 +55,8 @@ def masaAnalyzer(
         Number of MASA transport channels (1 - monoMASA, 2- stereoMASA)
     num_dirs: int
         Number of directions
-    metadata_out_path:
-        Path to output the Metadata file to
+    metadata_out_filename:
+        Output metadata filename (optional, tmp filename generated if not provided)
 
     Returns
     -------
@@ -94,10 +98,12 @@ def masaAnalyzer(
         tmp_dir = Path(tmp_dir)
         tmp_in = tmp_dir.joinpath("tmp_masaAnaIn.pcm")
         tmp_out_pcm = tmp_dir.joinpath("tmp_masaAnaOut.pcm")
+        if metadata_out_filename is None:
+            metadata_out_filename = tmp_dir.joinpath("tmp_masaAnaOut.met")
 
         cmd[4] = str(tmp_in)
         cmd[5] = str(tmp_out_pcm)
-        cmd[6] = str(metadata_out_path)
+        cmd[6] = str(metadata_out_filename.resolve())
 
         tmp_audio = resample_itu(sba, 48000)
         write(tmp_in, tmp_audio, 48000)
@@ -106,6 +112,6 @@ def masaAnalyzer(
         run(cmd, cwd=binary.resolve().parent)
 
         fmt = f"MASA{num_tcs}DIR{num_dirs}"
-        masa = audio.fromfile(fmt, tmp_out_pcm, 48000, metadata_out_path)
+        masa = audio.fromfile(fmt, tmp_out_pcm, 48000, metadata_out_filename)
 
         return masa