// List video transcoding templates​
package org.example.ListVideoConvertTemplates;​
​
import com.volcengine.tos.TOSV2;​
import com.volcengine.tos.TOSV2ClientBuilder;​
import com.volcengine.tos.TosClientException;​
import com.volcengine.tos.TosServerException;​
import com.volcengine.tos.comm.common.*;​
import com.volcengine.tos.model.bucket.*;​
import com.volcengine.tos.model.object.*;​
​
public class ListVideoConvertTemplatesExample {​
    public static void main(String[] args) {​
        String endpoint = System.getenv("TOS_ENDPOINT");​
        String region = System.getenv("TOS_REGION");​
        String accessKey = System.getenv("TOS_ACCESS_KEY");​
        String secretKey = System.getenv("TOS_SECRET_KEY");​
        ​
        // Specify BucketName, corresponding to the bucket containing the video transcoding templates to list​
        String bucketName = System.getenv("TOS_BUCKET");​
        ​
        // Initialize the client using endpoint, region, and AK/SK from environment variables for authentication​
        TOSV2 tos = new TOSV2ClientBuilder().build(region, endpoint, accessKey, secretKey);​
        ​
        try {​
            // Create a request to list video transcoding templates by specifying the Bucket name only​
            ListVideoConvertTemplatesInput input = ListVideoConvertTemplatesInput.builder()​
                    .bucket(bucketName)​
                    .build();​
            ​
            // Call the list video transcoding templates API​
            ListVideoConvertTemplatesOutput output = tos.listVideoConvertTemplates(input);​
            ​
            // Print key information of this request for troubleshooting​
            System.out.println("List of video transcoding templates successfully");​
            if (output.getRequestInfo() != null) {​
                System.out.println("RequestID: " + output.getRequestInfo().getRequestId());​
                System.out.println("StatusCode: " + output.getRequestInfo().getStatusCode());​
            }​
            ​
            // Get the list of video transcoding templates​
            java.util.List<VideoConvertTemplate> templates = output.getVideoConvertTemplates();​
            if (templates != null && !templates.isEmpty()) {​
                System.out.println("Turn up " + templates.size() + " Video transcoding templates:");​
                for (VideoConvertTemplate template : templates) {​
                    System.out.println("\n Template Information:");​
                    System.out.println(" ID: " + template.getId());​
                    System.out.println(" Name: " + template.getName());​
                    System.out.println(" Label: " + template.getTag());​
                    ​
                    // Print core fields of the transcode configuration​
                    Transcode transcodeConfig = template.getTranscodeConfig();​
                    if (transcodeConfig != null) {​
                        System.out.println("Transcoding configuration:");​
                        ​
                        // Container configuration, such as MP4/TS and segment duration​
                        Container container = transcodeConfig.getContainer();​
                        if (container != null) {​
                            System.out.println(" Container configuration:");​
                            System.out.println(" Container format: " + container.getFormat());​
                            ClipConfig clipConfig = container.getClipConfig();​
                            if (clipConfig != null) {​
                                System.out.println("  Slicing time: " + cSlicing timelipConfig.getDuration());​
                            }​
                        }​
                        ​
                        // Video parameters, including resolution, bitrate, and frame rate​
                        Video video = transcodeConfig.getVideo();​
                        if (video != null) {​
                            System.out.println("  Video parameters:");​
                            System.out.println("  Encoding format: " + video.getCodec());​
                            System.out.println("  Resolution: " + video.getWidth() + "x" + video.getHeight());​
                            System.out.println("  Bitrate: " + video.getBitRate());​
                            System.out.println("  Frame rate: " + video.getFps());​
                            System.out.println("  Pixel format: " + video.getPixFmt());​
                            System.out.println("  Remove video stream: " + video.getRemove());​
                        }​
                        ​
                        // Audio parameters, including bitrate, sample rate, and number of channels​
                        Audio audio = transcodeConfig.getAudio();​
                        if (audio != null) {​
                            System.out.println("  Audio parameters:");​
                            System.out.println("  Encoding format: " + audio.getCodec());​
                            System.out.println("  Bitrate: " + audio.getBitRate());​
                            System.out.println("  Sampling rate: " + audio.getSampleRate());​
                            System.out.println("  Number of channels: " + audio.getChannels());​
                            System.out.println("  Sampling format: " + audio.getSampleFormat());​
                            System.out.println("  Remove audio stream: " + audio.getRemove());​
                        }​
                        ​
                        // Time interval parameters to control the start time and duration of the transcoding task​
                        TimeInterval timeInterval = transcodeConfig.getTimeInterval();​
                        if (timeInterval != null) {​
                            System.out.println("   Time range:");​
                            System.out.println("   Start time (milliseconds): " + timeInterval.getStart());​
                            System.out.println("   Duration (milliseconds): " + timeInterval.getDuration());​
                       ​
                    }​
                }​
            } else {​
                System.out.println("No video transcoding template found");​
            }​
            ​
        } catch (TosClientException e) {​
            // Operation failed and a client exception was caught, usually due to invalid request parameters; the request was not sent​
            System.out.println("Operation failed");​
            System.out.println("Message: " + e.getMessage());​
            if (e.getCause() != null) {​
                e.getCause().printStackTrace();​
            }​
        } catch (TosServerException e) {​
            // Operation failed, caught a server exception, detailed error information can be obtained from the server response​
            System.out.println("Operation failed");​
            System.out.println("StatusCode: " + e.getStatusCode());​
            System.out.println("Code: " + e.getCode());​
            System.out.println("Message: " + e.getMessage());​
            System.out.println("RequestID: " + e.getRequestID());​
        } catch (Throwable t) {​
            // As a fallback for catching other exceptions, this point is usually not reached​
            System.out.println("Operation failed");​
            System.out.println("Unexpected exception, message: " + t.getMessage());​
        }​
    }​
}​