diff --git a/app/Http/SymfonyCastDl/HtmlParser.php b/app/Http/SymfonyCastDl/HtmlParser.php
index 0a2d808..b3c5f7c 100644
--- a/app/Http/SymfonyCastDl/HtmlParser.php
+++ b/app/Http/SymfonyCastDl/HtmlParser.php
@@ -65,10 +65,10 @@ class HtmlParser
         return $chapters;
     }
 
-    public function getVideoSource(Response $respose): string
+    public function getVideoSource(Response $respose): ?string
     {
         $document = new Document($respose->getBody()->getContents());
-        return $document->first('video source')->getAttribute('src');
+        return $document->first('video source')?->getAttribute('src');
     }
 
 }
diff --git a/app/Http/SymfonyCastDl/SymfonyCastDlService.php b/app/Http/SymfonyCastDl/SymfonyCastDlService.php
index c84f066..c8c0a5a 100644
--- a/app/Http/SymfonyCastDl/SymfonyCastDlService.php
+++ b/app/Http/SymfonyCastDl/SymfonyCastDlService.php
@@ -55,7 +55,7 @@ class SymfonyCastDlService
         $chapters->each(fn($chapter) => GetVideoFileSize::dispatch($chapter->id));
     }
 
-    public function getChapterInfo(Chapter $chapter): string
+    public function getChapterInfo(Chapter $chapter): ?string
     {
         $course = $chapter->course;
         $chapterPage = $this->client->get('/screencast/' . $course->link . DIRECTORY_SEPARATOR . $chapter->link);
@@ -64,7 +64,7 @@ class SymfonyCastDlService
 
     public function videoSize(Chapter $chapter): Chapter
     {
-        if (!$chapter->video_size) {
+        if (!$chapter->video_size && $chapter->video_link) {
             $response = $this->client->head($chapter->video_link);
             if ($response->hasHeader('Content-Length')) {
                 $chapter->video_size = (int)$response->getHeader('Content-Length')[0];
diff --git a/resources/views/chapter/index.blade.php b/resources/views/chapter/index.blade.php
index ad80019..c54e240 100644
--- a/resources/views/chapter/index.blade.php
+++ b/resources/views/chapter/index.blade.php
@@ -17,12 +17,14 @@
                     @endif
                 </div>
                 <div class="col">
+                    @if($videoUrl)
                         <div class="d-flex justify-content-center">
                             <video class="mx-auto" width="500" controls>
                                 <source src="{{ $videoUrl }}" type="video/mp4"/>
                             </video>
                         </div>
-                    @if($chapter->is_video_file)
+                    @else
+                        no video
                     @endif
 
                     <div>