diff --git a/apps/client/src/translations/ja/translation.json b/apps/client/src/translations/ja/translation.json
index 3605b7bdf2..0cfb0616e5 100644
--- a/apps/client/src/translations/ja/translation.json
+++ b/apps/client/src/translations/ja/translation.json
@@ -2168,5 +2168,24 @@
   },
   "setup_form": {
     "more_info": "さらに詳しく"
+  },
+  "media": {
+    "play": "再生 (スペース)",
+    "pause": "一時停止 (スペース)",
+    "back-10s": "10 秒戻る (左矢印キー)",
+    "forward-30s": "30 秒進む",
+    "mute": "ミュート (M)",
+    "unmute": "ミュート解除 (M)",
+    "playback-speed": "再生速度",
+    "loop": "ループ",
+    "disable-loop": "ループを解除",
+    "rotate": "回転",
+    "picture-in-picture": "ピクチャーインピクチャー",
+    "exit-picture-in-picture": "ピクチャーインピクチャーを終了",
+    "fullscreen": "全画面表示 (F)",
+    "exit-fullscreen": "全画面表示を終了",
+    "unsupported-format": "このファイル形式ではメディアプレビューはご利用いただけません:\n{{mime}}",
+    "zoom-to-fit": "ズームして全体を表示",
+    "zoom-reset": "ズーム設定をリセット"
   }
 }