Remove unsupported animation props from AVIF #2870

src/common.cc

@@ -510,6 +510,17 @@ namespace sharp {
     return copy;
   }
 
+  /*
+    Remove animation properties from image.
+  */
+  VImage RemoveAnimationProperties(VImage image) {
+    VImage copy = image.copy();
+    copy.remove(VIPS_META_PAGE_HEIGHT);
+    copy.remove("delay");
+    copy.remove("loop");
+    return copy;
+  }
+
   /*
     Does this image have a non-default density?
   */

src/common.h

@@ -208,6 +208,11 @@ namespace sharp {
   */
   VImage SetAnimationProperties(VImage image, int pageHeight, std::vector<int> delay, int loop);
 
+  /*
+    Remove animation properties from image.
+  */
+  VImage RemoveAnimationProperties(VImage image);
+
   /*
     Does this image have a non-default density?
   */

src/pipeline.cc

@@ -872,6 +872,7 @@ class PipelineWorker : public Napi::AsyncWorker {
         } else if (baton->formatOut == "heif" ||
           (baton->formatOut == "input" && inputImageType == sharp::ImageType::HEIF)) {
           // Write HEIF to buffer
+          image = sharp::RemoveAnimationProperties(image);
           VipsArea *area = reinterpret_cast<VipsArea*>(image.heifsave_buffer(VImage::option()
             ->set("strip", !baton->withMetadata)
             ->set("Q", baton->heifQuality)
@@ -1012,6 +1013,7 @@ class PipelineWorker : public Napi::AsyncWorker {
         } else if (baton->formatOut == "heif" || (mightMatchInput && isHeif) ||
           (willMatchInput && inputImageType == sharp::ImageType::HEIF)) {
           // Write HEIF to file
+          image = sharp::RemoveAnimationProperties(image);
           image.heifsave(const_cast<char*>(baton->fileOut.data()), VImage::option()
             ->set("strip", !baton->withMetadata)
             ->set("Q", baton->heifQuality)