Video conversion work may store duplicate transcoded blobs

@SuppressWarnings("unchecked")
        List<Map<String, Serializable>> propertyValue = (List<Map<String, Serializable>>) doc.getPropertyValue(TRANSCODED_VIDEO_PROP);

        if (propertyValue == null) {
            propertyValue = new ArrayList<>();
        }

        List<Map<String, Serializable>> transcoded = propertyValue.stream()
                                                                    .filter(map -> !transcodedVideo.getName().equals(map.get("name")))
                                                                    .collect(Collectors.toList());
        transcoded.add(transcodedVideo.toMap());