diff --git a/app/Console/Commands/SyncFiles.php b/app/Console/Commands/SyncFiles.php
new file mode 100644
index 0000000..3f69101
--- /dev/null
+++ b/app/Console/Commands/SyncFiles.php
@@ -0,0 +1,21 @@
+<?php
+
+namespace App\Console\Commands;
+
+use App\Jobs\DownloadVideoFile;
+use App\Models\Chapter;
+use Illuminate\Console\Command;
+
+class SyncFiles extends Command
+{
+    protected $signature = 'symfonycast:sync';
+
+    protected $description = 'Downloads files locally for chapters marked as sync offline';
+
+    public function handle()
+    {
+        $chapters = Chapter::where('sync_offline', 1)->get();
+        $chapters->each(fn($chapter) => DownloadVideoFile::dispatch($chapter->id));
+        return self::SUCCESS;
+    }
+}
diff --git a/app/Http/Controllers/ChapterController.php b/app/Http/Controllers/ChapterController.php
index a779207..c1df102 100644
--- a/app/Http/Controllers/ChapterController.php
+++ b/app/Http/Controllers/ChapterController.php
@@ -10,7 +10,9 @@ class ChapterController extends Controller
     public function index(Chapter $chapter, SymfonyCastDlService $symfonyCastDlService)
     {
         $symfonyCastDlService->videoSize($chapter);
-        $symfonyCastDlService->downloadFile($chapter);
+        if($chapter->sync_offline){
+            $symfonyCastDlService->downloadFile($chapter);
+        }
         return view('chapter.index', compact('chapter'));
     }
 }
diff --git a/app/Http/SymfonyCastDl/SymfonyCastDlService.php b/app/Http/SymfonyCastDl/SymfonyCastDlService.php
index 84a596d..34ccaec 100644
--- a/app/Http/SymfonyCastDl/SymfonyCastDlService.php
+++ b/app/Http/SymfonyCastDl/SymfonyCastDlService.php
@@ -7,7 +7,6 @@ use App\Models\Chapter;
 use App\Models\Course;
 use GuzzleHttp\TransferStats;
 use GuzzleHttp\Client;
-use Illuminate\Support\Str;
 
 class SymfonyCastDlService
 {
@@ -53,25 +52,22 @@ class SymfonyCastDlService
 
     public function videoSize(Chapter $chapter): Chapter
     {
-        try {
-            if (!$chapter->video_size) {
-                $response = $this->client->head($chapter->video_link);
-                if ($response->hasHeader('Content-Length')) {
-                    $chapter->video_size = $response->getHeader('Content-Length')[0];
-                }
+        if (!$chapter->video_size) {
+            $response = $this->client->head($chapter->video_link);
+            if ($response->hasHeader('Content-Length')) {
+                $chapter->video_size = (int)$response->getHeader('Content-Length')[0];
                 $chapter->save();
             }
-        } catch (\Exception $exception) {
         }
         return $chapter;
     }
 
     public function downloadFile(Chapter $chapter): void
     {
-        if (!is_dir($chapter->directory_path)) {
-            mkdir($chapter->directory_path);
+        if (!is_dir(public_path($chapter->directory_path))) {
+            mkdir(public_path($chapter->directory_path));
         }
-        if (!is_file($chapter->video_path)) {
+        if (!$chapter->is_video_file) {
             $this->client->request(
                 'GET',
                 $chapter->video_link,
diff --git a/app/Jobs/DownloadVideoFile.php b/app/Jobs/DownloadVideoFile.php
index 19f6667..17371f0 100644
--- a/app/Jobs/DownloadVideoFile.php
+++ b/app/Jobs/DownloadVideoFile.php
@@ -17,11 +17,10 @@ class DownloadVideoFile implements ShouldQueue
 
     public function __construct(private int $chapterId)
     {
-        //
     }
 
     public function handle(SymfonyCastDlService $symfonyCastDlService)
     {
-        $symfonyCastDlService->videoSize(Chapter::find($this->chapterId));
+        $symfonyCastDlService->downloadFile(Chapter::find($this->chapterId));
     }
 }
diff --git a/app/Jobs/GetVideoFileSize.php b/app/Jobs/GetVideoFileSize.php
index b5a658d..ec37c97 100644
--- a/app/Jobs/GetVideoFileSize.php
+++ b/app/Jobs/GetVideoFileSize.php
@@ -2,7 +2,6 @@
 
 namespace App\Jobs;
 
-use App\Http\SymfonyCastDl\HtmlParser;
 use App\Http\SymfonyCastDl\SymfonyCastDlService;
 use App\Models\Chapter;
 use Illuminate\Bus\Queueable;
diff --git a/app/Models/Chapter.php b/app/Models/Chapter.php
index 59670ac..7434594 100644
--- a/app/Models/Chapter.php
+++ b/app/Models/Chapter.php
@@ -8,6 +8,7 @@ use Illuminate\Database\Eloquent\Model;
 use Illuminate\Database\Eloquent\Relations\BelongsTo;
 
 /**
+ * @property int $id
  * @property int $order
  * @property string $link
  * @property string $video_link
@@ -18,6 +19,7 @@ use Illuminate\Database\Eloquent\Relations\BelongsTo;
  * @property bool $sync_offline
  * @property string $video_path
  * @property string $directory_path
+ * @property Course $course
  */
 class Chapter extends Model
 {
@@ -34,6 +36,8 @@ class Chapter extends Model
         'sync_offline',
     ];
 
+    protected $appends = ['video_path', 'directory_path'];
+
     public function course(): BelongsTo
     {
         return $this->belongsTo(Course::class);
@@ -52,4 +56,11 @@ class Chapter extends Model
             get: fn() => $this->course_id . '.' . $this->course->link
         );
     }
+
+    protected function isVideoFile(): Attribute
+    {
+        return Attribute::make(
+            get: fn() => is_file($this->video_path)
+        );
+    }
 }
diff --git a/app/Models/Course.php b/app/Models/Course.php
index 5a9b779..9feae52 100644
--- a/app/Models/Course.php
+++ b/app/Models/Course.php
@@ -2,6 +2,7 @@
 
 namespace App\Models;
 
+use Illuminate\Database\Eloquent\Casts\Attribute;
 use Carbon\Traits\Date;
 use Illuminate\Database\Eloquent\Factories\HasFactory;
 use Illuminate\Database\Eloquent\Model;
@@ -16,6 +17,7 @@ use Illuminate\Database\Eloquent\Relations\HasMany;
  * @property integer $numberofchapters
  * @property integer $timeswatched
  * @property Date $published_at
+ * @property Chapter[] $chapters
  */
 class Course extends Model
 {
@@ -39,4 +41,22 @@ class Course extends Model
     {
         return $this->hasMany(Chapter::class);
     }
+
+    public function totalSize(): Attribute
+    {
+        return Attribute::make(
+            get: fn() => $this->chapters->sum('video_size'),
+        );
+    }
+
+    public function totalSizeHuman(): Attribute
+    {
+        return Attribute::make(
+            get: function () {
+                $base = log($this->total_size) / log(1024);
+                $suffix = ["", "k", "M", "G", "T"][floor($base)];
+                return round(pow(1024, $base - floor($base)), 2) . $suffix;
+            },
+        );
+    }
 }
diff --git a/resources/views/chapter/index.blade.php b/resources/views/chapter/index.blade.php
index c9f06b4..4f4fc5e 100644
--- a/resources/views/chapter/index.blade.php
+++ b/resources/views/chapter/index.blade.php
@@ -1,13 +1,16 @@
 <x-layout>
     <h1>
         {{ $chapter->course->name }}
+        <br>
         <small class="text-muted">{{ $chapter->title }}</small>
     </h1>
     <div>
         <div class="mx-auto" style="width: 500px;">
-            <video class="mx-auto" width="500" controls>
-                <source src="/{{ $chapter->video_path }}" type="video/mp4"/>
-            </video>
+            @if($chapter->is_video_file)
+                <video class="mx-auto" width="500" controls>
+                    <source src="/{{ $chapter->video_path }}" type="video/mp4"/>
+                </video>
+            @endif
         </div>
     </div>
 </x-layout>
diff --git a/resources/views/course/index.blade.php b/resources/views/course/index.blade.php
index 11f3c89..f104013 100644
--- a/resources/views/course/index.blade.php
+++ b/resources/views/course/index.blade.php
@@ -15,13 +15,16 @@
         @foreach($course->chapters()->get() as $chapter)
             <tr>
                 <td><a href="{{ route('course.chapter', ['chapter' => $chapter->id]) }}">{{ $chapter->title }}</a></td>
-                <td>{{ $chapter->sync_offline?'Yes':'No' }}</td>
                 <td>{{ $chapter->duration }}</td>
+                <td>{{ $chapter->sync_offline?'Yes':'no' }}</td>
+                <td>{{ $chapter->is_video_file?'Yes':'-' }}</td>
             </tr>
         @endforeach
-            <tr>
-                <td></td>
-                <td>Total: {{ $course->course_duration }}</td>
-            </tr>
+        <tr>
+            <td></td>
+            <td>Total: {{ $course->course_duration }}</td>
+            <td></td>
+            <td>Size: {{ $course->total_size_human }}</td>
+        </tr>
     </table>
 </x-layout>