diff --git a/pymkv/MKVFile.py b/pymkv/MKVFile.py
index 3892bcc..e45e514 100644
--- a/pymkv/MKVFile.py
+++ b/pymkv/MKVFile.py
@@ -50,7 +50,7 @@
 from pymkv.MKVTrack import MKVTrack
 from pymkv.Timestamp import Timestamp
 from pymkv.utils import prepare_mkvtoolnix_path
-from pymkv.Verifications import checking_file_path, verify_mkvmerge
+from pymkv.Verifications import checking_file_path, verify_mkvmerge, verify_supported
 
 
 class MKVFile:
@@ -104,10 +104,14 @@ def __init__(  # noqa: C901, PLR0912
         self.attachments = []
         self._number_file = 0
 
-        if not verify_mkvmerge(mkvmerge_path=mkvmerge_path):
+        if not verify_mkvmerge(mkvmerge_path=self.mkvmerge_path):
             msg = "mkvmerge is not at the specified path, add it there or changed mkvmerge_path property"
             raise FileNotFoundError(msg)
 
+        if not verify_supported(file_path, mkvmerge_path=self.mkvmerge_path):
+            msg = f"The file '{file_path}' is not a valid Matroska file or is not supported."
+            raise ValueError(msg)
+
         if file_path is not None:
             # add file title
             file_path = checking_file_path(file_path)
diff --git a/pymkv/MKVTrack.py b/pymkv/MKVTrack.py
index c9bf322..1381f99 100644
--- a/pymkv/MKVTrack.py
+++ b/pymkv/MKVTrack.py
@@ -49,7 +49,7 @@
 from pymkv.ISO639_2 import is_iso639_2
 from pymkv.TypeTrack import get_track_extension
 from pymkv.utils import prepare_mkvtoolnix_path
-from pymkv.Verifications import verify_supported
+from pymkv.Verifications import checking_file_path, verify_supported
 
 
 class MKVTrack:
@@ -189,9 +189,9 @@ def file_path(self) -> str:
 
     @file_path.setter
     def file_path(self, file_path: str) -> None:
-        file_path = str(Path(file_path).expanduser())
+        file_path = checking_file_path(file_path)
         if not verify_supported(file_path, mkvmerge_path=self.mkvmerge_path):
-            msg = '"{}" is not a supported file'
+            msg = f"The file '{file_path}' is not a valid Matroska file or is not supported."
             raise ValueError(msg)
         self._file_path = file_path
         self.track_id = 0
diff --git a/pymkv/Verifications.py b/pymkv/Verifications.py
index 6d4a57b..37224ec 100644
--- a/pymkv/Verifications.py
+++ b/pymkv/Verifications.py
@@ -58,7 +58,7 @@ def verify_mkvmerge(mkvmerge_path: str | list | os.PathLike | None = "mkvmerge")
     return bool(match("mkvmerge.*", output))
 
 
-def verify_matroska(file_path: str | os.PathLike, mkvmerge_path: str = "mkvmerge") -> bool:
+def verify_matroska(file_path: str | os.PathLike, mkvmerge_path: str | list | os.PathLike | None = "mkvmerge") -> bool:
     """
     Parameters
     ----------
@@ -93,7 +93,7 @@ def verify_matroska(file_path: str | os.PathLike, mkvmerge_path: str = "mkvmerge
         msg = "mkvmerge is not at the specified path, add it there or change the mkvmerge_path property"
         raise FileNotFoundError(msg)
     try:
-        info_json = json.loads(
+        info_json: dict = json.loads(
             sp.check_output(
                 [*prepare_mkvtoolnix_path(mkvmerge_path), "-J", checking_file_path(file_path)],  # noqa: S603
             ).decode(),
diff --git a/tests/test_open_files.py b/tests/test_open_files.py
index dc3a92e..26d52b0 100644
--- a/tests/test_open_files.py
+++ b/tests/test_open_files.py
@@ -2,7 +2,7 @@
 
 import pytest
 
-from pymkv import MKVFile
+from pymkv import MKVFile, MKVTrack
 
 
 def test_open_file(get_path_test_file: Path) -> None:
@@ -22,3 +22,19 @@ def test_mux_file(get_base_path: Path, get_path_test_file: Path) -> None:
 def test_file_not_found() -> None:
     with pytest.raises(FileNotFoundError):
         MKVFile("file-zero.mkv")
+
+
+def test_file_not_support() -> None:
+    with pytest.raises(
+        ValueError,
+        match="The file 'tests/conftest.py' is not a valid Matroska file or is not supported.",
+    ):
+        MKVFile("tests/conftest.py")
+
+
+def test_track_not_support() -> None:
+    with pytest.raises(
+        ValueError,
+        match="The file 'tests/conftest.py' is not a valid Matroska file or is not supported.",
+    ):
+        MKVTrack("tests/conftest.py")
diff --git a/tests/test_verify.py b/tests/test_verify.py
new file mode 100644
index 0000000..be62507
--- /dev/null
+++ b/tests/test_verify.py
@@ -0,0 +1,19 @@
+from pathlib import Path
+
+import pytest
+
+from pymkv import verify_matroska
+
+
+def test_verify_matroska_true(get_path_test_file: Path) -> None:
+    assert verify_matroska(get_path_test_file) is True
+
+
+def test_verify_matroska_error(get_path_test_file: Path) -> None:
+    with pytest.raises(FileNotFoundError):
+        verify_matroska(get_path_test_file, "mkvmerge-test")
+
+
+def test_verify_matroska_false(get_path_test_file: Path) -> None:
+    with pytest.raises(KeyError):
+        verify_matroska("tests/conftest.py")