diff --git a/src/tests/Unit/Markdown/MediaEmbedExtensionTest.php b/src/tests/Unit/Markdown/MediaEmbedExtensionTest.php
index 51b2c03..d7456ed 100644
--- a/src/tests/Unit/Markdown/MediaEmbedExtensionTest.php
+++ b/src/tests/Unit/Markdown/MediaEmbedExtensionTest.php
@@ -35,4 +35,45 @@ public function test_vimeo_url_renders_as_iframe(): void
         $this->assertStringContainsString('<iframe', $html);
         $this->assertStringContainsString('player.vimeo.com', $html);
     }
+
+    public function test_image_and_video_coexist_in_same_document(): void
+    {
+        $md = "![photo](/photo.png)\n\n![](/demo.mp4)";
+        $html = Document::renderMarkdown($md);
+        $this->assertStringContainsString('<img', $html);
+        $this->assertStringContainsString('<video', $html);
+    }
+
+    public function test_multiple_media_in_same_paragraph(): void
+    {
+        $html = Document::renderMarkdown('![](/a.mp4) and ![](/b.mp4)');
+        $this->assertSame(2, substr_count($html, '<video'));
+    }
+
+    public function test_video_inside_list_item(): void
+    {
+        $html = Document::renderMarkdown("- ![](/demo.mp4)");
+        $this->assertStringContainsString('<li>', $html);
+        $this->assertStringContainsString('<video', $html);
+    }
+
+    public function test_wiki_link_unaffected_alongside_media(): void
+    {
+        $html = Document::renderMarkdown("![](/demo.mp4)\n\n[[Other Doc]]");
+        $this->assertStringContainsString('<video', $html);
+        $this->assertStringContainsString('[[Other Doc]]', $html);
+    }
+
+    public function test_youtube_with_timestamp_in_document(): void
+    {
+        $html = Document::renderMarkdown('![](https://www.youtube.com/watch?v=dQw4w9WgXcQ&t=30s)');
+        $this->assertStringContainsString('?start=30', $html);
+    }
+
+    public function test_audio_url_renders_as_audio_tag(): void
+    {
+        $html = Document::renderMarkdown('![](/clip.mp3)');
+        $this->assertStringContainsString('<audio', $html);
+        $this->assertStringContainsString('src="/clip.mp3"', $html);
+    }
 }