diff --git a/src/subtitle_utils/__init__.py b/src/subtitle_utils/__init__.py
index 5c54462..b48a301 100644
--- a/src/subtitle_utils/__init__.py
+++ b/src/subtitle_utils/__init__.py
@@ -4,6 +4,7 @@
 # @Software: PyCharm
 # @Github    ：sudoskys
 import json
+from io import TextIOBase
 from typing import Union, IO, Callable, Any
 
 from .convert.ass import AssConvert
@@ -12,21 +13,21 @@
 FOOTNOTE = None
 
 
-def srt2bcc(content: Union[str, IO]
+def srt2bcc(content: Union[str, IO, TextIOBase]
             ) -> str:
     result = BccConvert().srt2bcc(content=content, about=FOOTNOTE)
     result = json.dumps(result, ensure_ascii=False, indent=None)
     return result
 
 
-def vtt2bcc(content: Union[str, IO]
+def vtt2bcc(content: Union[str, IO, TextIOBase]
             ) -> str:
     result = BccConvert().vtt2bcc(content=content, about=FOOTNOTE)
     result = json.dumps(result, ensure_ascii=False, indent=None)
     return result
 
 
-def ass2bcc(content: Union[str, IO]
+def ass2bcc(content: Union[str, IO, TextIOBase]
             ) -> str:
     ass_result = AssConvert().ass2srt(content=content)
     result = BccConvert().srt2bcc(content=ass_result, about=FOOTNOTE)
@@ -34,7 +35,7 @@ def ass2bcc(content: Union[str, IO]
     return result
 
 
-def ass2srt(content: Union[str, IO]
+def ass2srt(content: Union[str, IO, TextIOBase]
             ) -> str:
     """
     :param content:
@@ -44,7 +45,7 @@ def ass2srt(content: Union[str, IO]
     return result
 
 
-def srt2ass(content: Union[str, IO],
+def srt2ass(content: Union[str, IO, TextIOBase],
             *,
             header: str = None
             ) -> str:
@@ -57,13 +58,13 @@ def srt2ass(content: Union[str, IO],
     return result
 
 
-def bcc2srt(content: Union[str, IO],
+def bcc2srt(content: Union[str, IO, TextIOBase],
             ) -> str:
     result = BccConvert().bcc2srt(content=content)
     return result
 
 
-def bcc2ass(content: Union[str, IO]
+def bcc2ass(content: Union[str, IO, TextIOBase]
             ) -> str:
     bcc_result = BccConvert().bcc2srt(content=content)
     result = AssConvert().srt2ass(content=bcc_result)
diff --git a/src/subtitle_utils/convert/ass.py b/src/subtitle_utils/convert/ass.py
index 49c0600..2acf10d 100644
--- a/src/subtitle_utils/convert/ass.py
+++ b/src/subtitle_utils/convert/ass.py
@@ -4,6 +4,7 @@
 # @File    : ass.py
 # @Software: PyCharm
 import tempfile
+from io import TextIOBase
 from typing import Union, IO
 
 from pyasstosrt import Subtitle
@@ -22,7 +23,7 @@
 
 class AssConvert(Convert):
     @staticmethod
-    def srt2ass(content: Union[str, IO],
+    def srt2ass(content: Union[str, IO, TextIOBase],
                 *,
                 header: str = None) -> str:
         """
@@ -31,7 +32,7 @@ def srt2ass(content: Union[str, IO],
         :param header: ASS HEADER (Style)
         :return: processed subtitle
         """
-        assert isinstance(content, (str, IO)), "content must be str or IO"
+        assert isinstance(content, (str, IO, TextIOBase)), f"content must be str or IO but {type(content)}"
         subs = SrtParse().parse(content=content)
         timestamps = [[str(sub.start), str(sub.end)] for sub in subs]
         subtitles = [sub.text for sub in subs]
@@ -68,18 +69,21 @@ def srt2ass(content: Union[str, IO],
         return content
 
     @staticmethod
-    def ass2srt(content: Union[str, IO]) -> str:
+    def ass2srt(content: Union[str, IO, TextIOBase]) -> str:
         assert isinstance(content, (str, IO)), "content must be str or IO"
         # write to temp file
-        with tempfile.NamedTemporaryFile(mode="w", encoding="utf-8", delete=False) as f:
+        with tempfile.NamedTemporaryFile(mode="w", encoding="utf-8", delete=True) as f:
             if isinstance(content, str):
                 f.write(content)
             else:
                 f.write(content.read())
-            f.close()
-            sub = Subtitle(filepath=f.name)
-            dialog = sub.export(output_dialogues=True)
+            f.seek(0)
             _result = []
-            for dialogue in dialog:
-                _result.append(str(dialogue))
+            try:
+                sub = Subtitle(filepath=f.name)
+                dialog = sub.export(output_dialogues=True)
+                for dialogue in dialog:
+                    _result.append(str(dialogue))
+            finally:
+                f.close()
         return "".join(_result)
diff --git a/src/subtitle_utils/convert/bcc.py b/src/subtitle_utils/convert/bcc.py
index f2a59c9..e764d80 100644
--- a/src/subtitle_utils/convert/bcc.py
+++ b/src/subtitle_utils/convert/bcc.py
@@ -4,6 +4,7 @@
 
 import re
 from datetime import datetime
+from io import TextIOBase
 from typing import Union, IO
 
 from loguru import logger
@@ -154,7 +155,7 @@ def _process_body(self, subs, about: str = None):
     def _time2str(time: float):
         return datetime.utcfromtimestamp(time).strftime("%H:%M:%S,%f")[:-3]
 
-    def srt2bcc(self, content: Union[str, IO], about: str = None):
+    def srt2bcc(self, content: Union[str, IO, TextIOBase], about: str = None):
         """
         srt2bcc 将 srt 转换为 bcc B站字幕格式
         :param content: srt format
@@ -172,7 +173,7 @@ def srt2bcc(self, content: Union[str, IO], about: str = None):
         }
         return bcc if subs else {}
 
-    def bcc2srt(self, content: Union[str, IO]):
+    def bcc2srt(self, content: Union[str, IO, TextIOBase]):
         """
         bcc2srt 将 bcc 转换为 srt 字幕格式
         :param content: bcc format
@@ -191,7 +192,7 @@ def bcc2srt(self, content: Union[str, IO]):
             srt += f"{content_str}\n\n"
         return srt[:-1] if subs else ""
 
-    def vtt2bcc(self, content: Union[str, IO], threshold=0.1, word=True, about: str = None):
+    def vtt2bcc(self, content: Union[str, IO, TextIOBase], threshold=0.1, word=True, about: str = None):
         """
         vtt2bcc 将 vtt 转换为 bcc B站字幕格式
         :param content:  vtt format
diff --git a/src/subtitle_utils/parse.py b/src/subtitle_utils/parse.py
index f15bdb4..5255ad5 100644
--- a/src/subtitle_utils/parse.py
+++ b/src/subtitle_utils/parse.py
@@ -7,6 +7,7 @@
 import os
 import tempfile
 from abc import ABC
+from io import TextIOBase
 from typing import Union, IO
 
 import pysrt
@@ -20,20 +21,23 @@ class Parser(ABC):
     Base Parser
     """
 
-    def parse(self, content: Union[str, IO]):
+    def parse(self, content: Union[str, IO, TextIOBase]):
         raise NotImplementedError
 
 
 class SrtParse(Parser):
 
-    def parse(self, content: Union[str, IO]) -> SubRipFile:
+    def parse(self, content: Union[str, IO, TextIOBase]) -> SubRipFile:
         if isinstance(content, str):
             return pysrt.from_string(content)
         # write to temp file
         with tempfile.NamedTemporaryFile(mode="w", encoding="utf-8", delete=True) as f:
             f.write(content.read())
-            f.close()
-            return pysrt.open(f.name)
+            f.seek(0)
+            try:
+                return pysrt.open(path=f.name)
+            finally:
+                f.close()
 
 
 class BccParser(Parser):
@@ -56,7 +60,7 @@ def parse_str(self, sentence):
         strs = sentence if sentence else ""
         return self._parse(strs)
 
-    def parse(self, content: Union[str, IO]) -> dict:
+    def parse(self, content: Union[str, IO, TextIOBase]) -> dict:
         """
         Parse bcc
         :param content: str or IO
@@ -69,7 +73,7 @@ def parse(self, content: Union[str, IO]) -> dict:
 
 class VttParser(Parser):
 
-    def parse(self, content: Union[str, IO]) -> WebVTTFile:
+    def parse(self, content: Union[str, IO, TextIOBase]) -> WebVTTFile:
         """
         :param content:  str or IO
         :return:  pyvtt.WebVTTFile
@@ -79,5 +83,8 @@ def parse(self, content: Union[str, IO]) -> WebVTTFile:
         # write to temp file
         with tempfile.NamedTemporaryFile(mode="w", encoding="utf-8", delete=True) as f:
             f.write(content.read())
-            f.close()
-            return pyvtt.open(f.name)
+            f.seek(0)
+            try:
+                return pyvtt.open(f.name)
+            finally:
+                f.close()
diff --git a/tests/__init__.py b/tests/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/tests/test_function.py b/tests/test_function.py
index ac97dc5..85ad96c 100644
--- a/tests/test_function.py
+++ b/tests/test_function.py
@@ -13,9 +13,11 @@ def test_show_available():
     assert isinstance(show_available()[0], str), "Error Checking show list"
 
 
-def test_srt2ass():
+def test_srt2bcc():
     with open("test.bcc", "r") as f:
         bcc_exp = f.read()
     with open("test.srt", 'r') as file_io:
-        test_result = get_method(method="srt2ass")(content=file_io)
+        test_result = get_method(method="srt2bcc")(content=file_io)
+        test_result = test_result.replace("\n", "")
+        bcc_exp = bcc_exp.replace("\n", "")
         assert test_result == bcc_exp, f"Error Checking srt2ass \n{test_result}"