mob preview, ii

leifos-gmbh · Oct 9, 2023 · 51ab60e · 51ab60e
1 parent 0f064fc
commit 51ab60e
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Showing 2 changed files with 24 additions and 1 deletion.
diff --git a/Services/MediaObjects/Video/Service/class.GUIService.php b/Services/MediaObjects/Video/Service/class.GUIService.php
@@ -103,8 +103,26 @@ public function handleExtractionRequest(
         }
     }
 
+    protected function checkPreviewPossible(int $mob_id) : bool
+    {
+        if ($mob_id === 0) {
+            return false;
+        }
+        $mob = new \ilObjMediaObject($mob_id);
+        $med = $mob->getMediaItem("Standard");
+        if (is_object($med)) {
+            if (\ilFFmpeg::supportsImageExtraction($med->getFormat())) {
+                return true;
+            }
+        }
+        return false;
+    }
+
     public function addPreviewInput(\ilPropertyFormGUI $form, int $mob_id = 0) : void
     {
+        if (!$this->checkPreviewPossible($mob_id)) {
+            return;
+        }
         $lng = $this->domain_service->lng();
         $pp = new \ilImageFileInputGUI($lng->txt("mob_preview_picture"), "preview_pic");
         $pp->setSuffixes(array("png", "jpeg", "jpg"));
@@ -122,6 +140,9 @@ public function addPreviewInput(\ilPropertyFormGUI $form, int $mob_id = 0) : voi
 
     public function savePreviewInput(\ilPropertyFormGUI $form, int $mob_id) : void
     {
+        if (!$this->checkPreviewPossible($mob_id)) {
+            return;
+        }
         $prevpic = $form->getInput("preview_pic");
         if ($prevpic["size"] > 0) {
             $mob = new \ilObjMediaObject($mob_id);

diff --git a/Services/MediaObjects/classes/class.ilObjMediaObjectGUI.php b/Services/MediaObjects/classes/class.ilObjMediaObjectGUI.php
@@ -379,7 +379,9 @@ public function initForm(string $a_mode = "create"): void
             $this->form_gui->addItem($ta);
         }
 
-        $this->video_gui->addPreviewInput($this->form_gui, $this->object->getId());
+        if ($this->object) {
+            $this->video_gui->addPreviewInput($this->form_gui, $this->object->getId());
+        }
 
         // standard parameters
         if ($a_mode == "edit" &&