diff --git a/internal/service/scanner.go b/internal/service/scanner.go
index f2d2dbe..cca087b 100644
--- a/internal/service/scanner.go
+++ b/internal/service/scanner.go
@@ -43,9 +43,14 @@ var videoExtensions = map[string]struct{}{
 	".3gp":  {},
 	".mpg":  {},
 	".mpeg": {},
+	".iso":  {},
 	".strm": {},
 }
 
+func mediaExtensionSupportsProbe(ext string) bool {
+	return ext != ".strm" && ext != ".iso"
+}
+
 // ScannerService walks libraries on disk and upserts model.Media rows.
 type ScannerService struct {
 	cfg       *config.Config
diff --git a/internal/service/scanner_cloud_ingest.go b/internal/service/scanner_cloud_ingest.go
index 29f0191..3acba06 100644
--- a/internal/service/scanner_cloud_ingest.go
+++ b/internal/service/scanner_cloud_ingest.go
@@ -76,7 +76,7 @@ func (s *ScannerService) ingestCloudFile(ctx context.Context, lib *model.Library
 		isNewMedia = !exists
 		needsTrackProbe = !exists || cloudTrackMetadataMissing(existing)
 		if exists && existing.LibraryID == lib.ID && existing.SizeBytes == size && existing.STRMURL == expectedSTRMURL && !cloudMetadataNeedsRefresh(existing, localMeta) && !cloudDerivedMetadataNeedsRefresh(existing, m) {
-			if needsTrackProbe && ext != ".strm" {
+			if needsTrackProbe && mediaExtensionSupportsProbe(ext) {
 				s.queueCloudMediaProbeWithBudget(typ, ref, path, probeBudget)
 			}
 			res.Skipped++
@@ -90,7 +90,7 @@ func (s *ScannerService) ingestCloudFile(ctx context.Context, lib *model.Library
 	}
 	if isNewMedia && writeBatch != nil {
 		var after func()
-		if needsTrackProbe && ext != ".strm" {
+		if needsTrackProbe && mediaExtensionSupportsProbe(ext) {
 			after = func() {
 				s.queueCloudMediaProbeWithBudget(typ, ref, path, probeBudget)
 			}
@@ -103,7 +103,7 @@ func (s *ScannerService) ingestCloudFile(ctx context.Context, lib *model.Library
 		s.log.Warn("upsert cloud media failed", zap.String("path", path), zap.Error(err))
 		return
 	}
-	if needsTrackProbe && ext != ".strm" {
+	if needsTrackProbe && mediaExtensionSupportsProbe(ext) {
 		s.queueCloudMediaProbeWithBudget(typ, ref, path, probeBudget)
 	}
 	if isNewMedia {
diff --git a/internal/service/scanner_incremental_test.go b/internal/service/scanner_incremental_test.go
index 37a1a91..4b8b578 100644
--- a/internal/service/scanner_incremental_test.go
+++ b/internal/service/scanner_incremental_test.go
@@ -63,6 +63,34 @@ func TestIngestPathAddsSingleFile(t *testing.T) {
 	}
 }
 
+func TestScanLibraryImportsISOImage(t *testing.T) {
+	sc, repos := newScannerTestEnv(t)
+	root := t.TempDir()
+	lib := model.Library{Name: "Movies", Path: root, Type: "movie", Enabled: true}
+	if err := repos.Library.Create(t.Context(), &lib); err != nil {
+		t.Fatal(err)
+	}
+	isoPath := filepath.Join(root, "Movie.Name.2026.iso")
+	if err := os.WriteFile(isoPath, []byte("iso image"), 0o644); err != nil {
+		t.Fatal(err)
+	}
+
+	res, err := sc.ScanLibrary(t.Context(), lib.ID)
+	if err != nil {
+		t.Fatalf("scan: %v", err)
+	}
+	if res.Added != 1 || res.ErrorCount != 0 {
+		t.Fatalf("scan result = %#v, want one ISO image added without errors", res)
+	}
+	var media model.Media
+	if err := repos.DB.First(&media).Error; err != nil {
+		t.Fatal(err)
+	}
+	if media.Path != isoPath || media.Container != "iso" {
+		t.Fatalf("ISO media = %#v, want path %q and container iso", media, isoPath)
+	}
+}
+
 func TestScanLibraryReturnsNotFoundForMissingLibrary(t *testing.T) {
 	sc, _ := newScannerTestEnv(t)
 
diff --git a/internal/service/scanner_local_ingest.go b/internal/service/scanner_local_ingest.go
index 1b2510a..faa0d1d 100644
--- a/internal/service/scanner_local_ingest.go
+++ b/internal/service/scanner_local_ingest.go
@@ -169,7 +169,7 @@ func (s *ScannerService) buildLocalScanMedia(in localScanMediaInput) *model.Medi
 }
 
 func (s *ScannerService) localProbeAfter(path, ext string) func() {
-	if ext == ".strm" || s.probe == nil {
+	if !mediaExtensionSupportsProbe(ext) || s.probe == nil {
 		return nil
 	}
 	return func() {
diff --git a/internal/service/strm_tree_import_test.go b/internal/service/strm_tree_import_test.go
index 5125ae7..baf4f07 100644
--- a/internal/service/strm_tree_import_test.go
+++ b/internal/service/strm_tree_import_test.go
@@ -93,8 +93,8 @@ func TestGenerateSTRMFromTreeSupportsCommonVideoExtensions(t *testing.T) {
 	if err != nil {
 		t.Fatal(err)
 	}
-	if res.Generated != 5 || len(res.Errors) != 0 {
-		t.Fatalf("result = %#v, want five common video sources generated and iso ignored", res)
+	if res.Generated != 6 || len(res.Errors) != 0 {
+		t.Fatalf("result = %#v, want six common video sources generated", res)
 	}
 	for _, name := range []string{
 		"BluRay.Stream.2026",
@@ -102,15 +102,13 @@ func TestGenerateSTRMFromTreeSupportsCommonVideoExtensions(t *testing.T) {
 		"DVD.Feature.2026",
 		"Legacy.Video.2026",
 		"Web.Legacy.2026",
+		"Disc.Image.2026",
 	} {
 		got := readSTRM(t, filepath.Join(outDir, "Movies", name+".strm"))
 		if !strings.Contains(got, "/api/cloud/play/openlist?") {
 			t.Fatalf("%s strm url = %q, want cloud play url", name, got)
 		}
 	}
-	if _, err := os.Stat(filepath.Join(outDir, "Movies", "Disc.Image.2026.strm")); !os.IsNotExist(err) {
-		t.Fatalf("iso source should stay ignored by tree generator, stat err=%v", err)
-	}
 }
 
 func TestGenerateSTRMFromTreeReportsIgnoredFileLikeRows(t *testing.T) {
@@ -138,8 +136,8 @@ func TestGenerateSTRMFromTreeReportsIgnoredFileLikeRows(t *testing.T) {
 	if err != nil {
 		t.Fatal(err)
 	}
-	if res.Generated != 2 || res.Ignored != 6 || len(res.IgnoredItems) != 6 {
-		t.Fatalf("result = %#v, want two generated videos and six ignored sidecars", res)
+	if res.Generated != 3 || res.Ignored != 5 || len(res.IgnoredItems) != 5 {
+		t.Fatalf("result = %#v, want three generated videos and five ignored sidecars", res)
 	}
 	for _, item := range res.IgnoredItems {
 		if item == "Show.Name.2026" || item == "电视剧/Show.Name.2026" {
diff --git a/internal/service/strm_tree_normalize.go b/internal/service/strm_tree_normalize.go
index 97af2cb..2702ae8 100644
--- a/internal/service/strm_tree_normalize.go
+++ b/internal/service/strm_tree_normalize.go
@@ -16,7 +16,6 @@ var strmTreeKnownNonVideoExtensions = map[string]struct{}{
 	".bmp":  {},
 	".gif":  {},
 	".idx":  {},
-	".iso":  {},
 	".jpeg": {},
 	".jpg":  {},
 	".nfo":  {},