diff --git a/.github/ISSUE_TEMPLATE/bug_report.md b/.github/ISSUE_TEMPLATE/bug_report.md
new file mode 100644
index 0000000..9cef8dc
--- /dev/null
+++ b/.github/ISSUE_TEMPLATE/bug_report.md
@@ -0,0 +1,23 @@
+---
+name: Bug report
+about: Create a report to help us improve
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+# To Reproduce
+Steps to reproduce the behavior:
+
+### Which Python version are you using?
+
+### Which version of youtube-transcript-api are you using?
+
+### What code / cli command are you executing?
+
+# Expected behavior
+Describe what you expected to happen.
+
+# Actual behaviour
+Describe what is happening instead of the **Expected behavior**. Add error messages if there are any.
diff --git a/.github/ISSUE_TEMPLATE/feature_request.md b/.github/ISSUE_TEMPLATE/feature_request.md
new file mode 100644
index 0000000..5ce37e3
--- /dev/null
+++ b/.github/ISSUE_TEMPLATE/feature_request.md
@@ -0,0 +1,20 @@
+---
+name: Feature request
+about: Suggest an idea for this project
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+**Is your feature request related to a problem? Please describe.**
+A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
+
+**Describe the solution you'd like**
+A clear and concise description of how you want youtube-transcript-api to solve your problem.
+
+**Describe alternatives you've considered**
+A clear and concise description of any alternative solutions or features you've considered.
+
+**Additional context**
+Add any other context about the feature request here. If you have any additional technical information which could be relevant for the implementation, feel free to share them here.
diff --git a/youtube_transcript_api/_api.py b/youtube_transcript_api/_api.py
index a618b0e..dfb790d 100644
--- a/youtube_transcript_api/_api.py
+++ b/youtube_transcript_api/_api.py
@@ -92,6 +92,8 @@ class YouTubeTranscriptApi(object):
         video ids, which could not be retrieved
         :rtype ({str: [{'text': str, 'start': float, 'end': float}]}, [str]}):
         """
+        assert isinstance(video_ids, list), "`video_ids` must be a list of strings"
+
         data = {}
         unretrievable_videos = []
 
@@ -126,6 +128,7 @@ class YouTubeTranscriptApi(object):
         :return: a list of dictionaries containing the 'text', 'start' and 'duration' keys
         :rtype [{'text': str, 'start': float, 'end': float}]:
         """
+        assert isinstance(video_id, str), "`video_id` must be a string"
         return cls.list_transcripts(video_id, proxies, cookies).find_transcript(languages).fetch()
     
     @classmethod
diff --git a/youtube_transcript_api/test/test_api.py b/youtube_transcript_api/test/test_api.py
index ef23f9b..3bda630 100644
--- a/youtube_transcript_api/test/test_api.py
+++ b/youtube_transcript_api/test/test_api.py
@@ -254,6 +254,14 @@ class TestYouTubeTranscriptApi(TestCase):
                 {'text': 'just something shorter, I made up for testing', 'start': 5.7, 'duration': 3.239}
             ]
         )
+    
+    def test_get_transcript__assertionerror_if_input_not_string(self):
+        with self.assertRaises(AssertionError):
+            YouTubeTranscriptApi.get_transcript(['video_id_1', 'video_id_2'])
+    
+    def test_get_transcripts__assertionerror_if_input_not_list(self):
+        with self.assertRaises(AssertionError):
+            YouTubeTranscriptApi.get_transcripts('video_id_1')
 
     @patch('youtube_transcript_api.YouTubeTranscriptApi.get_transcript')
     def test_get_transcripts(self, mock_get_transcript):