fix(server): only extract image's duration if format supports animation (#24587)

server/src/services/metadata.service.spec.ts

@@ -1034,7 +1034,10 @@ describe(MetadataService.name, () => {
     });
 
     it('should use Duration from exif', async () => {
-      mocks.assetJob.getForMetadataExtraction.mockResolvedValue(assetStub.image);
+      mocks.assetJob.getForMetadataExtraction.mockResolvedValue({
+        ...assetStub.image,
+        originalPath: '/original/path.webp',
+      });
       mockReadTags({ Duration: 123 }, {});
 
       await sut.handleMetadataExtraction({ id: assetStub.image.id });
@@ -1046,6 +1049,7 @@ describe(MetadataService.name, () => {
     it('should prefer Duration from exif over sidecar', async () => {
       mocks.assetJob.getForMetadataExtraction.mockResolvedValue({
         ...assetStub.image,
+        originalPath: '/original/path.webp',
         files: [
           {
             id: 'some-id',
@@ -1063,6 +1067,16 @@ describe(MetadataService.name, () => {
       expect(mocks.asset.update).toHaveBeenCalledWith(expect.objectContaining({ duration: '00:02:03.000' }));
     });
 
+    it('should ignore all Duration tags for definitely static images', async () => {
+      mocks.assetJob.getForMetadataExtraction.mockResolvedValue(assetStub.imageDng);
+      mockReadTags({ Duration: 123 }, { Duration: 456 });
+
+      await sut.handleMetadataExtraction({ id: assetStub.imageDng.id });
+
+      expect(mocks.metadata.readTags).toHaveBeenCalledTimes(1);
+      expect(mocks.asset.update).toHaveBeenCalledWith(expect.objectContaining({ duration: null }));
+    });
+
     it('should ignore Duration from exif for videos', async () => {
       mocks.assetJob.getForMetadataExtraction.mockResolvedValue(assetStub.video);
       mockReadTags({ Duration: 123 }, {});

server/src/services/metadata.service.ts

@@ -32,6 +32,7 @@ import { BaseService } from 'src/services/base.service';
 import { JobItem, JobOf } from 'src/types';
 import { getAssetFiles } from 'src/utils/asset.util';
 import { isAssetChecksumConstraint } from 'src/utils/database';
+import { mimeTypes } from 'src/utils/mime-types';
 import { isFaceImportEnabled } from 'src/utils/misc';
 import { upsertTags } from 'src/utils/tag';
 
@@ -486,7 +487,8 @@ export class MetadataService extends BaseService {
     }
 
     // prefer duration from video tags
-    if (videoTags) {
+    // don't save duration if asset is definitely not an animated image (see e.g. CR3 with Duration: 1s)
+    if (videoTags || !mimeTypes.isPossiblyAnimatedImage(asset.originalPath)) {
       delete mediaTags.Duration;
     }