Information is not returning CLOUD VIDEO INTELLIGENCE API

I'm sending a video with base64 to google api but it is not returning any kind of information.

// BOTÃO DE BUSCAR
public String consultar() throws Throwable {
        analyzeLabelsFile("C:\Users\Web Designer\Desktop\Placas de Carros\fiat.jpg");
        return "analiseForenseVideos.xhtml";

    }

    public static void analyzeLabelsFile(String filePath) throws Exception {
        try (VideoIntelligenceServiceClient client = VideoIntelligenceServiceClient.create()) {
            // Read file and encode into Base64
            Path path = Paths.get(filePath);
            byte[] data = Files.readAllBytes(path);
            byte[] encodedBytes = Base64.encodeBase64(data);
            System.out.println(encodedBytes);
            AnnotateVideoRequest request = AnnotateVideoRequest.newBuilder()
                    .setInputContent(ByteString.copyFrom(encodedBytes)).addFeatures(Feature.LABEL_DETECTION).build();

            // Create an operation that will contain the response when the operation
            // completes.
            OperationFuture<AnnotateVideoResponse, AnnotateVideoProgress> response = client.annotateVideoAsync(request);

            System.out.println("Waiting for operation to complete...");
            for (VideoAnnotationResults results : response.get().getAnnotationResultsList()) {
                // process video / segment level label annotations
                System.out.println("Locations: ");
                for (LabelAnnotation labelAnnotation : results.getSegmentLabelAnnotationsList()) {
                    System.out.println("Video label: " + labelAnnotation.getEntity().getDescription());
                    // categories
                    for (Entity categoryEntity : labelAnnotation.getCategoryEntitiesList()) {
                        System.out.println("Video label category: " + categoryEntity.getDescription());
                    }
                    // segments
                    for (LabelSegment segment : labelAnnotation.getSegmentsList()) {
                        double startTime = segment.getSegment().getStartTimeOffset().getSeconds()
                                + segment.getSegment().getStartTimeOffset().getNanos() / 1e9;
                        double endTime = segment.getSegment().getEndTimeOffset().getSeconds()
                                + segment.getSegment().getEndTimeOffset().getNanos() / 1e9;
                        System.out.printf("Segment location: %.3f:%.2f\n", startTime, endTime);
                        System.out.println("Confidence: " + segment.getConfidence());
                    }
                }

                // process shot label annotations
                for (LabelAnnotation labelAnnotation : results.getShotLabelAnnotationsList()) {
                    System.out.println("Shot label: " + labelAnnotation.getEntity().getDescription());
                    // categories
                    for (Entity categoryEntity : labelAnnotation.getCategoryEntitiesList()) {
                        System.out.println("Shot label category: " + categoryEntity.getDescription());
                    }
                    // segments
                    for (LabelSegment segment : labelAnnotation.getSegmentsList()) {
                        double startTime = segment.getSegment().getStartTimeOffset().getSeconds()
                                + segment.getSegment().getStartTimeOffset().getNanos() / 1e9;
                        double endTime = segment.getSegment().getEndTimeOffset().getSeconds()
                                + segment.getSegment().getEndTimeOffset().getNanos() / 1e9;
                        System.out.printf("Segment location: %.3f:%.2f\n", startTime, endTime);
                        System.out.println("Confidence: " + segment.getConfidence());
                    }
                }

                // process frame label annotations
                for (LabelAnnotation labelAnnotation : results.getFrameLabelAnnotationsList()) {
                    System.out.println("Frame label: " + labelAnnotation.getEntity().getDescription());
                    // categories
                    for (Entity categoryEntity : labelAnnotation.getCategoryEntitiesList()) {
                        System.out.println("Frame label category: " + categoryEntity.getDescription());
                    }
                    // segments
                    for (LabelSegment segment : labelAnnotation.getSegmentsList()) {
                        double startTime = segment.getSegment().getStartTimeOffset().getSeconds()
                                + segment.getSegment().getStartTimeOffset().getNanos() / 1e9;
                        double endTime = segment.getSegment().getEndTimeOffset().getSeconds()
                                + segment.getSegment().getEndTimeOffset().getNanos() / 1e9;
                        System.out.printf("Segment location: %.3f:%.2f\n", startTime, endTime);
                        System.out.println("Confidence: " + segment.getConfidence());
                    }
                }
            }
        }
    }
}