diff --git a/README.md b/README.md
index 0db74de..2838a35 100644
--- a/README.md
+++ b/README.md
@@ -235,9 +235,9 @@ $tag = $audio->write()
 
 ### Raw tags
 
-Audio files format metadata with different methods, `JamesHeinrich/getID3` offer to check these metadatas by different methods. In `extras` property of `Audio::class`, you will find raw metadata from `JamesHeinrich/getID3` package, like `id3v2`, `id3v1`, `riff`, `asf`, `quicktime`, `matroska`, `ape`, `vorbiscomment`...
+Audio files format metadata with different methods, `JamesHeinrich/getID3` offer to check these metadatas by different methods. In `raw_all` property of `Audio::class`, you will find raw metadata from `JamesHeinrich/getID3` package, like `id3v2`, `id3v1`, `riff`, `asf`, `quicktime`, `matroska`, `ape`, `vorbiscomment`...
 
-If you want to extract specific field which can be skipped by `Audio::class`, you can use `extras` property.
+If you want to extract specific field which can be skipped by `Audio::class`, you can use `raw_all` property.
 
 ```php
 use Kiwilan\Audio\Audio;
@@ -446,7 +446,7 @@ composer test
 
 ### I have a specific metadata field in my audio files, what can I do?
 
-In `Audio::class`, you have a property `extras` which contains all raw metadata, if `JamesHeinrich/getID3` support this field, you will find it in this property.
+In `Audio::class`, you have a property `raw_all` which contains all raw metadata, if `JamesHeinrich/getID3` support this field, you will find it in this property.
 
 ```php
 use Kiwilan\Audio\Audio;
@@ -473,8 +473,8 @@ use Kiwilan\Audio\Audio;
 
 $audio = Audio::read('path/to/audio.mp3');
 
-$extras = $audio->getRawAll();
-var_dump($extras);
+$raw_all = $audio->getRawAll();
+var_dump($raw_all);
 ```
 
 If you find metadata which are not parsed by `Audio::class`, you can create [an issue](https://github.com/kiwilan/php-audio/issues/new/choose), otherwise `JamesHeinrich/getID3` doesn't support this metadata.z
diff --git a/composer.json b/composer.json
index 346ddc6..3be8b8d 100644
--- a/composer.json
+++ b/composer.json
@@ -1,7 +1,7 @@
 {
     "name": "kiwilan/php-audio",
     "description": "PHP package to parse and update audio files metadata, with `JamesHeinrich/getID3`.",
-    "version": "4.0.0",
+    "version": "4.0.01",
     "keywords": [
         "audio",
         "php",
diff --git a/src/Audio.php b/src/Audio.php
index b3525fe..2047ae5 100755
--- a/src/Audio.php
+++ b/src/Audio.php
@@ -13,7 +13,7 @@
 class Audio
 {
     /**
-     * @param  array<string, string[]>  $raw_tags_all
+     * @param  array<string, string[]>  $raw_all
      */
     protected function __construct(
         protected string $path,
@@ -47,7 +47,7 @@ protected function __construct(
         protected ?string $language = null,
         protected ?string $lyrics = null,
 
-        protected array $raw_tags_all = [],
+        protected array $raw_all = [],
     ) {}
 
     public static function read(string $path): self
@@ -411,7 +411,7 @@ public function getLyrics(): ?string
      */
     public function getRawAll(): array
     {
-        return $this->raw_tags_all;
+        return $this->raw_all;
     }
 
     /**
@@ -425,16 +425,16 @@ public function getRawAll(): array
     public function getRaw(?string $format = null): ?array
     {
         if ($format) {
-            return $this->raw_tags_all[$format] ?? null;
+            return $this->raw_all[$format] ?? null;
         }
 
         $tags = match ($this->type) {
-            AudioTypeEnum::id3 => $this->raw_tags_all['id3v2'] ?? [],
-            AudioTypeEnum::vorbiscomment => $this->raw_tags_all['vorbiscomment'] ?? [],
-            AudioTypeEnum::quicktime => $this->raw_tags_all['quicktime'] ?? [],
-            AudioTypeEnum::matroska => $this->raw_tags_all['matroska'] ?? [],
-            AudioTypeEnum::ape => $this->raw_tags_all['ape'] ?? [],
-            AudioTypeEnum::asf => $this->raw_tags_all['asf'] ?? [],
+            AudioTypeEnum::id3 => $this->raw_all['id3v2'] ?? [],
+            AudioTypeEnum::vorbiscomment => $this->raw_all['vorbiscomment'] ?? [],
+            AudioTypeEnum::quicktime => $this->raw_all['quicktime'] ?? [],
+            AudioTypeEnum::matroska => $this->raw_all['matroska'] ?? [],
+            AudioTypeEnum::ape => $this->raw_all['ape'] ?? [],
+            AudioTypeEnum::asf => $this->raw_all['asf'] ?? [],
             default => [],
         };
 
@@ -485,7 +485,7 @@ public function toArray(): array
             'synopsis' => $this->synopsis,
             'language' => $this->language,
             'lyrics' => $this->lyrics,
-            'raw_tags_all' => $this->raw_tags_all,
+            'raw_all' => $this->raw_all,
         ];
     }
 
@@ -522,7 +522,7 @@ private function parseTags(?\Kiwilan\Audio\Id3\Id3Reader $id3_reader): self
 
         $raw_tags = $id3_reader->getRaw()['tags'] ?? [];
         foreach ($raw_tags as $name => $raw_tag) {
-            $this->raw_tags_all[$name] = Id3Reader::cleanTags($raw_tag);
+            $this->raw_all[$name] = Id3Reader::cleanTags($raw_tag);
         }
 
         $core = match ($this->type) {
diff --git a/src/Id3/Reader/Id3AudioQuicktime.php b/src/Id3/Reader/Id3AudioQuicktime.php
index 87ea32e..9c3d28c 100644
--- a/src/Id3/Reader/Id3AudioQuicktime.php
+++ b/src/Id3/Reader/Id3AudioQuicktime.php
@@ -171,4 +171,35 @@ public function getMdat(): ?Id3AudioQuicktimeItem
     {
         return $this->mdat;
     }
+
+    public function getChapter(int $index): ?Id3AudioQuicktimeChapter
+    {
+        return $this->chapters[$index] ?? null;
+    }
+
+    public function toArray(): array
+    {
+        $chapters = [];
+        foreach ($this->chapters as $chapter) {
+            $chapters[] = $chapter->toArray();
+        }
+
+        return [
+            'hinting' => $this->hinting,
+            'controller' => $this->controller,
+            'ftyp' => $this->ftyp?->toArray(),
+            'timestamps_unix' => $this->timestamps_unix,
+            'time_scale' => $this->time_scale,
+            'display_scale' => $this->display_scale,
+            'video' => $this->video,
+            'audio' => $this->audio,
+            'stts_framecount' => $this->stts_framecount,
+            'comments' => $this->comments,
+            'chapters' => $chapters,
+            'free' => $this->free?->toArray(),
+            'wide' => $this->wide?->toArray(),
+            'mdat' => $this->mdat?->toArray(),
+            'encoding' => $this->encoding,
+        ];
+    }
 }
diff --git a/src/Id3/Reader/Id3AudioQuicktimeChapter.php b/src/Id3/Reader/Id3AudioQuicktimeChapter.php
index be6c790..65017a2 100644
--- a/src/Id3/Reader/Id3AudioQuicktimeChapter.php
+++ b/src/Id3/Reader/Id3AudioQuicktimeChapter.php
@@ -35,4 +35,12 @@ public function getTitle(): ?string
     {
         return $this->title;
     }
+
+    public function toArray(): array
+    {
+        return [
+            'timestamp' => $this->timestamp,
+            'title' => $this->title,
+        ];
+    }
 }
diff --git a/src/Id3/Reader/Id3AudioQuicktimeItem.php b/src/Id3/Reader/Id3AudioQuicktimeItem.php
index 4980e98..dd6915e 100644
--- a/src/Id3/Reader/Id3AudioQuicktimeItem.php
+++ b/src/Id3/Reader/Id3AudioQuicktimeItem.php
@@ -75,4 +75,17 @@ public function getFourcc(): ?string
     {
         return $this->fourcc;
     }
+
+    public function toArray(): array
+    {
+        return [
+            'hierarchy' => $this->hierarchy,
+            'name' => $this->name,
+            'size' => $this->size,
+            'offset' => $this->offset,
+            'signature' => $this->signature,
+            'unknown_1' => $this->unknown_1,
+            'fourcc' => $this->fourcc,
+        ];
+    }
 }
diff --git a/src/Models/AudioMetadata.php b/src/Models/AudioMetadata.php
index 6900d6a..08ecf04 100644
--- a/src/Models/AudioMetadata.php
+++ b/src/Models/AudioMetadata.php
@@ -293,6 +293,8 @@ public function toArray(): array
             'data_format' => $this->data_format,
             'encoding' => $this->encoding,
             'mime_type' => $this->mime_type,
+            'quicktime' => $this->quicktime?->toArray(),
+            'warning' => $this->warning,
             'duration_seconds' => $this->duration_seconds,
             'bitrate' => $this->bitrate,
             'bitrate_mode' => $this->bitrate_mode,
diff --git a/tests/AudioMetadataTest.php b/tests/AudioMetadataTest.php
index 005c930..33a4163 100644
--- a/tests/AudioMetadataTest.php
+++ b/tests/AudioMetadataTest.php
@@ -139,4 +139,6 @@
     expect($quicktime->getWide())->toBeInstanceOf(Id3AudioQuicktimeItem::class);
     expect($quicktime->getMdat())->toBeInstanceOf(Id3AudioQuicktimeItem::class);
     expect($quicktime->getEncoding())->toBeString();
+
+    expect($quicktime->toArray())->toBeArray();
 });
diff --git a/tests/AudiobookTest.php b/tests/AudiobookTest.php
index b91796a..6b1227c 100644
--- a/tests/AudiobookTest.php
+++ b/tests/AudiobookTest.php
@@ -148,7 +148,7 @@
     expect($quicktime->getChapters())->toBeArray();
     expect($quicktime->getChapters())->each(fn (Pest\Expectation $chapter) => expect($chapter->value)->toBeInstanceOf(Id3AudioQuicktimeChapter::class));
 
-    $first = $quicktime->getChapters()[0];
+    $first = $quicktime->getChapter(0);
     expect($first->getTimestamp())->toBe(0);
     expect($first->getTitle())->toBe('Chapter 01');
 });