diff --git a/photos/video/forkalsrud-spring-time-lapse.m4v b/photos/video/forkalsrud-spring-time-lapse.m4v
new file mode 100644
index 0000000..d7a7b49
Binary files /dev/null and b/photos/video/forkalsrud-spring-time-lapse.m4v differ
diff --git a/src/main/java/org/forkalsrud/album/exif/DirectoryMetadataGenerator.java b/src/main/java/org/forkalsrud/album/exif/DirectoryMetadataGenerator.java
index cd0b228..9c93392 100644
--- a/src/main/java/org/forkalsrud/album/exif/DirectoryMetadataGenerator.java
+++ b/src/main/java/org/forkalsrud/album/exif/DirectoryMetadataGenerator.java
@@ -80,7 +80,7 @@ public class DirectoryMetadataGenerator {
             if (name.endsWith(".jpg") || name.endsWith(".jpeg") || name.endsWith(".JPG")) {
                 Map<String, String> p = generateThumbnailProperties(f);
                 addPropsForFile(props, f, p);
-            } else if (name.endsWith(".mov") || name.endsWith(".MOV") || name.endsWith(".mp4") || name.endsWith(".avi")) {
+            } else if (name.endsWith(".mov") || name.endsWith(".MOV") || name.endsWith(".mp4") || name.endsWith(".m4v") || name.endsWith(".avi")) {
                 Map<String, String> p = movieCoder.generateVideoProperties(f);
                 addPropsForFile(props, f, p);
             }