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快速入门:使用 Transcoder API 对视频进行转码

使用 Transcoder API 对视频进行转码

本页面介绍如何使用 Transcoder API 和 curl、Windows PowerShell 或客户端库的默认设置创建基本视频转码作业。

您还可以使用以下任一编程语言直接在 Google Cloud Console 中执行本快速入门:

准备工作

  1. 登录您的 Google Cloud 帐号。如果您是 Google Cloud 新手,请创建一个帐号来评估我们的产品在实际场景中的表现。新客户还可获享 $300 赠金,用于运行、测试和部署工作负载。
  2. 安装初始化 Google Cloud CLI。
  3. 创建或选择 Google Cloud 项目。

    • 创建 Cloud 项目:

      gcloud projects create PROJECT_ID
    • 选择您创建的 Cloud 项目:

      gcloud config set project PROJECT_ID
  4. 确保您的 Cloud 项目已启用结算功能。了解如何检查项目是否已启用结算功能

  5. Enable the Transcoder API:

    gcloud services enable transcoder.googleapis.com
  6. 为您的 Google 帐号创建身份验证凭据:

    gcloud auth application-default login
  7. 向您的 Google 帐号授予角色。对以下每个 IAM 角色运行以下命令一次: roles/transcoder.admin, roles/storage.admin

    gcloud projects add-iam-policy-binding PROJECT_ID --member="user:EMAIL_ADDRESS" --role=ROLE
    • PROJECT_ID 替换为您的项目 ID。
    • EMAIL_ADDRESS 替换为您的电子邮件地址。
    • ROLE 替换为每个角色。
  8. 安装初始化 Google Cloud CLI。
  9. 创建或选择 Google Cloud 项目。

    • 创建 Cloud 项目:

      gcloud projects create PROJECT_ID
    • 选择您创建的 Cloud 项目:

      gcloud config set project PROJECT_ID
  10. 确保您的 Cloud 项目已启用结算功能。了解如何检查项目是否已启用结算功能

  11. Enable the Transcoder API:

    gcloud services enable transcoder.googleapis.com
  12. 为您的 Google 帐号创建身份验证凭据:

    gcloud auth application-default login
  13. 向您的 Google 帐号授予角色。对以下每个 IAM 角色运行以下命令一次: roles/transcoder.admin, roles/storage.admin

    gcloud projects add-iam-policy-binding PROJECT_ID --member="user:EMAIL_ADDRESS" --role=ROLE
    • PROJECT_ID 替换为您的项目 ID。
    • EMAIL_ADDRESS 替换为您的电子邮件地址。
    • ROLE 替换为每个角色。

创建 Cloud Storage 存储桶

  1. 在 Google Cloud 控制台中,进入 Cloud Storage 存储桶页面。

    进入“存储桶”页面

  2. 点击创建存储分区
  3. 创建存储分区页面上,输入您的存储分区信息。要转到下一步,请点击继续
    • 指定存储分区的名称中,输入唯一的存储分区名称。请勿在存储分区名称中添加敏感信息,因为存储分区命名空间是全局性的,公开可见。
    • 对于选择数据存储位置,执行以下操作:
      • 选择位置类型选项。
      • 选择位置选项。
    • 对于为数据选择一个默认存储类别,选择以下项: Standard
    • 对于选择如何控制对象的访问权限,请选择访问权限控制选项。
    • 对于高级设置(可选),请指定加密方法保留政策存储分区标签
  4. 点击创建
  5. 点击创建文件夹并输入名称,以创建一个用于保存已编码的视频输出的文件夹。

使用 Transcoder API 对视频进行转码

执行以下步骤时,本地机器上必须至少有时长为 5 秒的视频(示例视频)。请参阅支持的输入和输出格式列表

将视频上传到 Cloud Storage 存储桶

  1. 在 Google Cloud Console 中,转到 Cloud Storage 浏览器页面。
    转到“Cloud Storage 浏览器”页面
  2. 点击存储桶的名称将其打开。
  3. 点击上传文件
  4. 选择要从本地机器上传的视频文件。

您的视频现已保存到 Cloud Storage 存储桶。

创建转码作业

默认情况下,Transcoder API 使用 H.264 编码以及 MP4、HLS 和 MPEG-DASH 包装对视频进行转码。对于每个输入视频,它以高清(1280x720 像素)和标清(640x360 像素)提供输出呈现方式。

要创建作业,请使用 projects.locations.jobs.create 方法。 以下代码示例使用预设创建基本转码作业。

REST 和命令行

在使用任何请求数据之前,请先进行以下替换:

  • PROJECT_IDIAM 设置中列出的 Google Cloud 项目 ID。
  • LOCATION:运行作业的位置。请使用其中一个受支持的区域
    • us-central1
    • us-west1
    • us-west2
    • us-east1
    • us-east4
    • southamerica-east1
    • asia-east1
    • asia-south1
    • asia-southeast1
    • europe-west1
    • europe-west2
    • europe-west4
  • STORAGE_BUCKET_NAME:您创建的 Cloud Storage 存储桶的名称。
  • STORAGE_INPUT_VIDEO:您要对其进行转码的 Cloud Storage 存储桶中的视频的名称,例如 my-vid.mp4。此字段应考虑您在存储桶中创建的任何文件夹(例如 input/my-vid.mp4)。
  • STORAGE_OUTPUT_FOLDER:您要在其中保存已编码视频输出的 Cloud Storage 文件夹名称。

请求 JSON 正文:

{
  "inputUri": "gs://STORAGE_BUCKET_NAME/STORAGE_INPUT_VIDEO",
  "outputUri": "gs://STORAGE_BUCKET_NAME/STORAGE_OUTPUT_FOLDER/",
  "templateId": "preset/web-hd"
}

如需发送您的请求,请展开以下选项之一:

此特定 REST 示例使用可选的 fields 查询参数来仅在显示响应中的已创建的资源名称。

{
  "name": "projects/PROJECT_NUMBER/locations/LOCATION/jobs/JOB_ID"
}

gcloud

  1. gcloud 命令进行以下替换:
    • STORAGE_BUCKET_NAME:您创建的 Cloud Storage 存储桶的名称。
    • STORAGE_INPUT_VIDEO:您要对其进行转码的 Cloud Storage 存储桶中的视频的名称,例如 my-vid.mp4。此字段应考虑您在存储桶中创建的任何文件夹(例如 input/my-vid.mp4)。
    • LOCATION:运行作业的位置。请使用其中一个受支持的区域
      • us-central1
      • us-west1
      • us-west2
      • us-east1
      • us-east4
      • southamerica-east1
      • asia-east1
      • asia-south1
      • asia-southeast1
      • europe-west1
      • europe-west2
      • europe-west4
    • STORAGE_OUTPUT_FOLDER:您要在其中保存已编码视频输出的 Cloud Storage 文件夹名称。
  2. 运行以下命令:
    gcloud transcoder jobs create \
      --input-uri="gs://STORAGE_BUCKET_NAME/STORAGE_INPUT_VIDEO" \
      --location=LOCATION \
      --output-uri="gs://STORAGE_BUCKET_NAME/STORAGE_OUTPUT_FOLDER/"
    
    您应该会看到如下所示的响应:
    {
      "config": {
       ...
      },
      "createTime": CREATE_TIME,
      "name": "projects/PROJECT_NUMBER/locations/LOCATION/jobs/JOB_ID",
      "state": "PENDING",
      "ttlAfterCompletionDays": 30
    }
    

C#

在尝试此示例之前,请按照 Transcoder API 快速入门:使用客户端库中的 C# 设置说明进行操作。 如需了解详情,请参阅 Transcoder API C# API 参考文档


using Google.Api.Gax.ResourceNames;
using Google.Cloud.Video.Transcoder.V1;

public class CreateJobFromPresetSample
{
    public Job CreateJobFromPreset(
        string projectId, string location, string inputUri, string outputUri, string preset)
    {
        // Create the client.
        TranscoderServiceClient client = TranscoderServiceClient.Create();

        // Build the parent location name.
        LocationName parent = new LocationName(projectId, location);

        // Build the job.
        Job newJob = new Job
        {
            InputUri = inputUri,
            OutputUri = outputUri,
            TemplateId = preset
        };

        // Call the API.
        Job job = client.CreateJob(parent, newJob);

        // Return the result.
        return job;
    }
}

Go

在尝试此示例之前,请按照 Transcoder API 快速入门:使用客户端库中的 Go 设置说明进行操作。 如需了解详情,请参阅 Transcoder API Go API 参考文档

import (
	"context"
	"fmt"
	"io"

	transcoder "cloud.google.com/go/video/transcoder/apiv1"
	transcoderpb "google.golang.org/genproto/googleapis/cloud/video/transcoder/v1"
)

// createJobFromPreset creates a job based on a given preset template. See
// https://cloud.google.com/transcoder/docs/how-to/jobs#create_jobs_presets
// for more information.
func createJobFromPreset(w io.Writer, projectID string, location string, inputURI string, outputURI string, preset string) error {
	// projectID := "my-project-id"
	// location := "us-central1"
	// inputURI := "gs://my-bucket/my-video-file"
	// outputURI := "gs://my-bucket/my-output-folder/"
	// preset := "preset/web-hd"
	ctx := context.Background()
	client, err := transcoder.NewClient(ctx)
	if err != nil {
		return fmt.Errorf("NewClient: %v", err)
	}
	defer client.Close()

	req := &transcoderpb.CreateJobRequest{
		Parent: fmt.Sprintf("projects/%s/locations/%s", projectID, location),
		Job: &transcoderpb.Job{
			InputUri:  inputURI,
			OutputUri: outputURI,
			JobConfig: &transcoderpb.Job_TemplateId{
				TemplateId: preset,
			},
		},
	}
	// Creates the job, Jobs take a variable amount of time to run.
	// You can query for the job state.
	response, err := client.CreateJob(ctx, req)
	if err != nil {
		return fmt.Errorf("createJobFromPreset: %v", err)
	}

	fmt.Fprintf(w, "Job: %v", response.GetName())
	return nil
}

Java

在尝试此示例之前,请按照 Transcoder API 快速入门:使用客户端库中的 Java 设置说明进行操作。 如需了解详情,请参阅 Transcoder API Java API 参考文档


import com.google.cloud.video.transcoder.v1.CreateJobRequest;
import com.google.cloud.video.transcoder.v1.Job;
import com.google.cloud.video.transcoder.v1.LocationName;
import com.google.cloud.video.transcoder.v1.TranscoderServiceClient;
import java.io.IOException;

public class CreateJobFromPreset {

  public static void main(String[] args) throws Exception {
    // TODO(developer): Replace these variables before running the sample.
    String projectId = "my-project-id";
    String location = "us-central1";
    String inputUri = "gs://my-bucket/my-video-file";
    String outputUri = "gs://my-bucket/my-output-folder/";
    String preset = "preset/web-hd";

    createJobFromPreset(projectId, location, inputUri, outputUri, preset);
  }

  // Creates a job from a preset.
  public static void createJobFromPreset(
      String projectId, String location, String inputUri, String outputUri, String preset)
      throws IOException {
    // Initialize client that will be used to send requests. This client only needs to be created
    // once, and can be reused for multiple requests.
    try (TranscoderServiceClient transcoderServiceClient = TranscoderServiceClient.create()) {

      var createJobRequest =
          CreateJobRequest.newBuilder()
              .setJob(
                  Job.newBuilder()
                      .setInputUri(inputUri)
                      .setOutputUri(outputUri)
                      .setTemplateId(preset)
                      .build())
              .setParent(LocationName.of(projectId, location).toString())
              .build();

      // Send the job creation request and process the response.
      Job job = transcoderServiceClient.createJob(createJobRequest);
      System.out.println("Job: " + job.getName());
    }
  }
}

Node.js

在尝试此示例之前,请按照 Transcoder API 快速入门:使用客户端库中的 Node.js 设置说明进行操作。 如需了解详情,请参阅 Transcoder API Node.js API 参考文档

/**
 * TODO(developer): Uncomment these variables before running the sample.
 */
// projectId = 'my-project-id';
// location = 'us-central1';
// inputUri = 'gs://my-bucket/my-video-file';
// outputUri = 'gs://my-bucket/my-output-folder/';
// preset = 'preset/web-hd';

// Imports the Transcoder library
const {TranscoderServiceClient} =
  require('@google-cloud/video-transcoder').v1;

// Instantiates a client
const transcoderServiceClient = new TranscoderServiceClient();

async function createJobFromPreset() {
  // Construct request
  const request = {
    parent: transcoderServiceClient.locationPath(projectId, location),
    job: {
      inputUri: inputUri,
      outputUri: outputUri,
      templateId: preset,
    },
  };

  // Run request
  const [response] = await transcoderServiceClient.createJob(request);
  console.log(`Job: ${response.name}`);
}

createJobFromPreset();

PHP

在尝试此示例之前,请按照 Transcoder API 快速入门:使用客户端库中的 PHP 设置说明进行操作。 如需了解详情,请参阅 Transcoder API PHP API 参考文档

use Google\Cloud\Video\Transcoder\V1\TranscoderServiceClient;
use Google\Cloud\Video\Transcoder\V1\Job;

/**
 * Creates a job based on a job preset.
 *
 * @param string $projectId The ID of your Google Cloud Platform project.
 * @param string $location The location of the job.
 * @param string $inputUri Uri of the video in the Cloud Storage bucket.
 * @param string $outputUri Uri of the video output folder in the Cloud Storage bucket.
 * @param string $preset The preset template (for example, "preset/web-hd").
 */
function create_job_from_preset($projectId, $location, $inputUri, $outputUri, $preset)
{
    // Instantiate a client.
    $transcoderServiceClient = new TranscoderServiceClient();

    $formattedParent = $transcoderServiceClient->locationName($projectId, $location);
    $job = new Job();
    $job->setInputUri($inputUri);
    $job->setOutputUri($outputUri);
    $job->setTemplateId($preset);

    $response = $transcoderServiceClient->createJob($formattedParent, $job);

    // Print job name.
    printf('Job: %s' . PHP_EOL, $response->getName());
}

Python

在尝试此示例之前,请按照 Transcoder API 快速入门:使用客户端库中的 Python 设置说明进行操作。 如需了解详情,请参阅 Transcoder API Python API 参考文档


import argparse

from google.cloud.video import transcoder_v1
from google.cloud.video.transcoder_v1.services.transcoder_service import (
    TranscoderServiceClient,
)

def create_job_from_preset(project_id, location, input_uri, output_uri, preset):
    """Creates a job based on a job preset.

    Args:
        project_id: The GCP project ID.
        location: The location to start the job in.
        input_uri: Uri of the video in the Cloud Storage bucket.
        output_uri: Uri of the video output folder in the Cloud Storage bucket.
        preset: The preset template (for example, 'preset/web-hd')."""

    client = TranscoderServiceClient()

    parent = f"projects/{project_id}/locations/{location}"
    job = transcoder_v1.types.Job()
    job.input_uri = input_uri
    job.output_uri = output_uri
    job.template_id = preset

    response = client.create_job(parent=parent, job=job)
    print(f"Job: {response.name}")
    return response

Ruby

在尝试此示例之前,请按照 Transcoder API 快速入门:使用客户端库中的 Ruby 设置说明进行操作。 如需了解详情,请参阅 Transcoder API Ruby API 参考文档

# project_id  = "YOUR-GOOGLE-CLOUD-PROJECT"  # (e.g. "my-project")
# location    = "YOUR-JOB-LOCATION"  # (e.g. "us-central1")
# input_uri   = "YOUR-GCS-INPUT-VIDEO"  # (e.g. "gs://my-bucket/my-video-file")
# output_uri  = "YOUR-GCS-OUTPUT-FOLDER/"  # (e.g. "gs://my-bucket/my-output-folder/")
# preset      = "YOUR-JOB-PRESET"  # (e.g. "preset/web-hd")

# Require the Transcoder client library.
require "google/cloud/video/transcoder"

# Create a Transcoder client.
client = Google::Cloud::Video::Transcoder.transcoder_service

# Build the resource name of the parent.
parent = client.location_path project: project_id, location: location

# Set the job fields.
new_job = {
  input_uri: input_uri,
  output_uri: output_uri,
  template_id: preset
}

job = client.create_job parent: parent, job: new_job

# Print the job name.
puts "Job: #{job.name}"

复制返回的 JOB_ID。您需要该 ID 才能获得作业的状态。

检查转码作业的状态

如需检查作业的状态,请使用 projects.locations.jobs.get 方法。 以下代码显示获取作业详细信息的示例并显示作业状态。

REST 和命令行

在使用任何请求数据之前,请先进行以下替换:

  • JOB_ID:您创建的作业的 ID。
  • PROJECT_ID:您的 Google Cloud 项目 ID。
  • LOCATION:您的作业的位置。请使用其中一个受支持的区域
    • us-central1
    • us-west1
    • us-west2
    • us-east1
    • us-east4
    • southamerica-east1
    • asia-east1
    • asia-south1
    • asia-southeast1
    • europe-west1
    • europe-west2
    • europe-west4
  • 根据您发送的请求,请展开以下选项之一:

    您应该收到类似以下内容的 JSON 响应:

    {
      "name": "projects/PROJECT_NUMBER/locations/LOCATION/jobs/JOB_ID",
      "config": {
        "inputs": [
          {
            "key": "input0",
            "uri": "gs://STORAGE_BUCKET_NAME/STORAGE_INPUT_VIDEO"
          }
        ],
        "editList": [
          {
            "key": "atom0",
            "inputs": [
              "input0"
            ],
            "startTimeOffset": "0s"
          }
        ],
        "elementaryStreams": [
          {
            "videoStream": {
              "h264": {
                "widthPixels": 640,
                "heightPixels": 360,
                "frameRate": 30,
                "bitrateBps": 550000,
                "pixelFormat": "yuv420p",
                "rateControlMode": "vbr",
                "crfLevel": 21,
                "gopDuration": "3s",
                "vbvSizeBits": 550000,
                "vbvFullnessBits": 495000,
                "entropyCoder": "cabac",
                "bFrameCount": 3,
                "aqStrength": 1,
                "profile": "high",
                "preset": "veryfast"
              }
            },
            "key": "video-stream0"
          },
          {
            "videoStream": {
              "h264": {
                "widthPixels": 1280,
                "heightPixels": 720,
                "frameRate": 30,
                "bitrateBps": 2500000,
                "pixelFormat": "yuv420p",
                "rateControlMode": "vbr",
                "crfLevel": 21,
                "gopDuration": "3s",
                "vbvSizeBits": 2500000,
                "vbvFullnessBits": 2250000,
                "entropyCoder": "cabac",
                "bFrameCount": 3,
                "aqStrength": 1,
                "profile": "high",
                "preset": "veryfast"
              }
            },
            "key": "video-stream1"
          },
          {
            "audioStream": {
              "codec": "aac",
              "bitrateBps": 64000,
              "channelCount": 2,
              "channelLayout": [
                "fl",
                "fr"
              ],
              "sampleRateHertz": 48000
            },
            "key": "audio-stream0"
          }
        ],
        "muxStreams": [
          {
            "key": "sd",
            "fileName": "sd.mp4",
            "container": "mp4",
            "elementaryStreams": [
              "video-stream0",
              "audio-stream0"
            ]
          },
          {
            "key": "hd",
            "fileName": "hd.mp4",
            "container": "mp4",
            "elementaryStreams": [
              "video-stream1",
              "audio-stream0"
            ]
          },
          {
            "key": "media-sd",
            "fileName": "media-sd.ts",
            "container": "ts",
            "elementaryStreams": [
              "video-stream0",
              "audio-stream0"
            ]
          },
          {
            "key": "media-hd",
            "fileName": "media-hd.ts",
            "container": "ts",
            "elementaryStreams": [
              "video-stream1",
              "audio-stream0"
            ]
          },
          {
            "key": "video-only-sd",
            "fileName": "video-only-sd.m4s",
            "container": "fmp4",
            "elementaryStreams": [
              "video-stream0"
            ]
          },
          {
            "key": "video-only-hd",
            "fileName": "video-only-hd.m4s",
            "container": "fmp4",
            "elementaryStreams": [
              "video-stream1"
            ]
          },
          {
            "key": "audio-only",
            "fileName": "audio-only.m4s",
            "container": "fmp4",
            "elementaryStreams": [
              "audio-stream0"
            ]
          }
        ],
        "manifests": [
          {
            "fileName": "manifest.m3u8",
            "type": "HLS",
            "muxStreams": [
              "media-sd",
              "media-hd"
            ]
          },
          {
            "fileName": "manifest.mpd",
            "type": "DASH",
            "muxStreams": [
              "video-only-sd",
              "video-only-hd",
              "audio-only"
            ]
          }
        ],
        "output": {
          "uri": "gs://STORAGE_BUCKET_NAME/STORAGE_OUTPUT_FOLDER/"
        }
      },
      "state": "PENDING",
      "createTime": CREATE_TIME,
      "ttlAfterCompletionDays": 30
    }
    

    gcloud

    1. gcloud 命令进行以下替换:
      • JOB_ID:您创建的作业的 ID。
      • LOCATION:您的作业的位置。请使用其中一个受支持的区域
        • us-central1
        • us-west1
        • us-west2
        • us-east1
        • us-east4
        • southamerica-east1
        • asia-east1
        • asia-south1
        • asia-southeast1
        • europe-west1
        • europe-west2
        • europe-west4
    2. 运行以下命令:
      gcloud transcoder jobs describe JOB_ID --location=LOCATION
      您应该会看到如下所示的响应:
      {
        "name": "projects/PROJECT_NUMBER/locations/LOCATION/jobs/JOB_ID",
        "config": {
          "inputs": [
            {
              "key": "input0",
              "uri": "gs://STORAGE_BUCKET_NAME/STORAGE_INPUT_VIDEO"
            }
          ],
          "editList": [
            {
              "key": "atom0",
              "inputs": [
                "input0"
              ],
              "startTimeOffset": "0s"
            }
          ],
          "elementaryStreams": [
            {
              "videoStream": {
                "h264": {
                  "widthPixels": 640,
                  "heightPixels": 360,
                  "frameRate": 30,
                  "bitrateBps": 550000,
                  "pixelFormat": "yuv420p",
                  "rateControlMode": "vbr",
                  "crfLevel": 21,
                  "gopDuration": "3s",
                  "vbvSizeBits": 550000,
                  "vbvFullnessBits": 495000,
                  "entropyCoder": "cabac",
                  "bFrameCount": 3,
                  "aqStrength": 1,
                  "profile": "high",
                  "preset": "veryfast"
                }
              },
              "key": "video-stream0"
            },
            {
              "videoStream": {
                "h264": {
                  "widthPixels": 1280,
                  "heightPixels": 720,
                  "frameRate": 30,
                  "bitrateBps": 2500000,
                  "pixelFormat": "yuv420p",
                  "rateControlMode": "vbr",
                  "crfLevel": 21,
                  "gopDuration": "3s",
                  "vbvSizeBits": 2500000,
                  "vbvFullnessBits": 2250000,
                  "entropyCoder": "cabac",
                  "bFrameCount": 3,
                  "aqStrength": 1,
                  "profile": "high",
                  "preset": "veryfast"
                }
              },
              "key": "video-stream1"
            },
            {
              "audioStream": {
                "codec": "aac",
                "bitrateBps": 64000,
                "channelCount": 2,
                "channelLayout": [
                  "fl",
                  "fr"
                ],
                "sampleRateHertz": 48000
              },
              "key": "audio-stream0"
            }
          ],
          "muxStreams": [
            {
              "key": "sd",
              "fileName": "sd.mp4",
              "container": "mp4",
              "elementaryStreams": [
                "video-stream0",
                "audio-stream0"
              ]
            },
            {
              "key": "hd",
              "fileName": "hd.mp4",
              "container": "mp4",
              "elementaryStreams": [
                "video-stream1",
                "audio-stream0"
              ]
            },
            {
              "key": "media-sd",
              "fileName": "media-sd.ts",
              "container": "ts",
              "elementaryStreams": [
                "video-stream0",
                "audio-stream0"
              ]
            },
            {
              "key": "media-hd",
              "fileName": "media-hd.ts",
              "container": "ts",
              "elementaryStreams": [
                "video-stream1",
                "audio-stream0"
              ]
            },
            {
              "key": "video-only-sd",
              "fileName": "video-only-sd.m4s",
              "container": "fmp4",
              "elementaryStreams": [
                "video-stream0"
              ]
            },
            {
              "key": "video-only-hd",
              "fileName": "video-only-hd.m4s",
              "container": "fmp4",
              "elementaryStreams": [
                "video-stream1"
              ]
            },
            {
              "key": "audio-only",
              "fileName": "audio-only.m4s",
              "container": "fmp4",
              "elementaryStreams": [
                "audio-stream0"
              ]
            }
          ],
          "manifests": [
            {
              "fileName": "manifest.m3u8",
              "type": "HLS",
              "muxStreams": [
                "media-sd",
                "media-hd"
              ]
            },
            {
              "fileName": "manifest.mpd",
              "type": "DASH",
              "muxStreams": [
                "video-only-sd",
                "video-only-hd",
                "audio-only"
              ]
            }
          ],
          "output": {
            "uri": "gs://STORAGE_BUCKET_NAME/STORAGE_OUTPUT_FOLDER/"
          }
        },
        "state": "PENDING",
        "createTime": CREATE_TIME,
        "ttlAfterCompletionDays": 30
      }
      

    C#

    在尝试此示例之前,请按照 Transcoder API 快速入门:使用客户端库中的 C# 设置说明进行操作。 如需了解详情,请参阅 Transcoder API C# API 参考文档

    
    using Google.Cloud.Video.Transcoder.V1;
    
    public class GetJobStateSample
    {
        public Job.Types.ProcessingState GetJobState(string projectId, string location, string jobId)
        {
            // Create the client.
            TranscoderServiceClient client = TranscoderServiceClient.Create();
    
            // Build the job name.
            JobName jobName = JobName.FromProjectLocationJob(projectId, location, jobId);
    
            // Call the API.
            Job job = client.GetJob(jobName);
    
            // Return the result.
            return job.State;
        }
    }

    Go

    在尝试此示例之前,请按照 Transcoder API 快速入门:使用客户端库中的 Go 设置说明进行操作。 如需了解详情,请参阅 Transcoder API Go API 参考文档

    import (
    	"context"
    	"fmt"
    	"io"
    
    	transcoder "cloud.google.com/go/video/transcoder/apiv1"
    	transcoderpb "google.golang.org/genproto/googleapis/cloud/video/transcoder/v1"
    )
    
    // getJobState gets the state for a previously-created job. See
    // https://cloud.google.com/transcoder/docs/how-to/jobs#check_job_status for
    // more information.
    func getJobState(w io.Writer, projectID string, location string, jobID string) error {
    	// projectID := "my-project-id"
    	// location := "us-central1"
    	// jobID := "my-job-id"
    	ctx := context.Background()
    	client, err := transcoder.NewClient(ctx)
    	if err != nil {
    		return fmt.Errorf("NewClient: %v", err)
    	}
    	defer client.Close()
    
    	req := &transcoderpb.GetJobRequest{
    		Name: fmt.Sprintf("projects/%s/locations/%s/jobs/%s", projectID, location, jobID),
    	}
    
    	response, err := client.GetJob(ctx, req)
    	if err != nil {
    		return fmt.Errorf("GetJob: %v", err)
    	}
    	fmt.Fprintf(w, "Job state: %v\n----\nJob failure reason:%v\n", response.State, response.Error)
    	return nil
    }
    

    Java

    在尝试此示例之前,请按照 Transcoder API 快速入门:使用客户端库中的 Java 设置说明进行操作。 如需了解详情,请参阅 Transcoder API Java API 参考文档

    
    import com.google.cloud.video.transcoder.v1.GetJobRequest;
    import com.google.cloud.video.transcoder.v1.Job;
    import com.google.cloud.video.transcoder.v1.JobName;
    import com.google.cloud.video.transcoder.v1.TranscoderServiceClient;
    import java.io.IOException;
    
    public class GetJobState {
    
      public static void main(String[] args) throws Exception {
        // TODO(developer): Replace these variables before running the sample.
        String projectId = "my-project-id";
        String location = "us-central1";
        String jobId = "my-job-id";
    
        getJobState(projectId, location, jobId);
      }
    
      // Gets the state of a job.
      public static void getJobState(String projectId, String location, String jobId)
          throws IOException {
        // Initialize client that will be used to send requests. This client only needs to be created
        // once, and can be reused for multiple requests.
        try (TranscoderServiceClient transcoderServiceClient = TranscoderServiceClient.create()) {
          JobName jobName =
              JobName.newBuilder().setProject(projectId).setLocation(location).setJob(jobId).build();
          var getJobRequest = GetJobRequest.newBuilder().setName(jobName.toString()).build();
    
          // Send the get job request and process the response.
          Job job = transcoderServiceClient.getJob(getJobRequest);
          System.out.println("Job state: " + job.getState());
        }
      }
    }

    Node.js

    在尝试此示例之前,请按照 Transcoder API 快速入门:使用客户端库中的 Node.js 设置说明进行操作。 如需了解详情,请参阅 Transcoder API Node.js API 参考文档

    /**
     * TODO(developer): Uncomment these variables before running the sample.
     */
    // projectId = 'my-project-id';
    // location = 'us-central1';
    // jobId = 'my-job-id';
    
    // Imports the Transcoder library
    const {TranscoderServiceClient} =
      require('@google-cloud/video-transcoder').v1;
    
    // Instantiates a client
    const transcoderServiceClient = new TranscoderServiceClient();
    
    async function getJob() {
      // Construct request
      const request = {
        name: transcoderServiceClient.jobPath(projectId, location, jobId),
      };
      const [response] = await transcoderServiceClient.getJob(request);
      console.log(`Job state: ${response.state}`);
    }
    
    getJob();

    PHP

    在尝试此示例之前,请按照 Transcoder API 快速入门:使用客户端库中的 PHP 设置说明进行操作。 如需了解详情,请参阅 Transcoder API PHP API 参考文档

    use Google\Cloud\Video\Transcoder\V1\Job;
    use Google\Cloud\Video\Transcoder\V1\TranscoderServiceClient;
    
    /**
     * Gets a Transcoder job's state.
     *
     * @param string $projectId The ID of your Google Cloud Platform project.
     * @param string $location The location of the job.
     * @param string $jobId The job ID.
     */
    function get_job_state($projectId, $location, $jobId)
    {
        // Instantiate a client.
        $transcoderServiceClient = new TranscoderServiceClient();
    
        $formattedName = $transcoderServiceClient->jobName($projectId, $location, $jobId);
        $job = $transcoderServiceClient->getJob($formattedName);
    
        // Print job state.
        printf('Job state: %s' . PHP_EOL, Job\ProcessingState::name($job->getState()));
    }

    Python

    在尝试此示例之前,请按照 Transcoder API 快速入门:使用客户端库中的 Python 设置说明进行操作。 如需了解详情,请参阅 Transcoder API Python API 参考文档

    
    import argparse
    
    from google.cloud.video.transcoder_v1.services.transcoder_service import (
        TranscoderServiceClient,
    )
    
    def get_job_state(project_id, location, job_id):
        """Gets a job's state.
    
        Args:
            project_id: The GCP project ID.
            location: The location this job is in.
            job_id: The job ID."""
    
        client = TranscoderServiceClient()
    
        name = f"projects/{project_id}/locations/{location}/jobs/{job_id}"
        response = client.get_job(name=name)
    
        print(f"Job state: {str(response.state)}")
        return response
    
    

    Ruby

    在尝试此示例之前,请按照 Transcoder API 快速入门:使用客户端库中的 Ruby 设置说明进行操作。 如需了解详情,请参阅 Transcoder API Ruby API 参考文档

    # project_id = "YOUR-GOOGLE-CLOUD-PROJECT"  # (e.g. "my-project")
    # location   = "YOUR-JOB-LOCATION"  # (e.g. "us-central1")
    # job_id     = "YOUR-JOB-ID"  # (e.g. "c82c295b-3f5a-47df-8562-938a89d40fd0")
    
    # Require the Transcoder client library.
    require "google/cloud/video/transcoder"
    
    # Create a Transcoder client.
    client = Google::Cloud::Video::Transcoder.transcoder_service
    
    # Build the resource name of the job.
    name = client.job_path project: project_id, location: location, job: job_id
    
    # Get the job.
    job = client.get_job name: name
    
    # Print the job state.
    puts "Job state: #{job.state}"

    如果 stateSUCCEEDED,则表示作业已完成,并且您的视频输出现在可在 Cloud Storage 存储桶的已编码文件列表中找到。

    播放视频

    如需在 Shaka Player 中播放生成的媒体文件,请完成以下步骤:

    1. 请将 Cloud Storage 存储桶设为可公开读取
    2. 如需在 Cloud Storage 存储桶上启用跨域资源共享 (CORS),请执行以下操作:
      1. 创建一个包含以下代码的 JSON 文件:
        [
          {
            "origin": ["https://shaka-player-demo.appspot.com/"],
            "responseHeader": ["Content-Type", "Range"],
            "method": ["GET", "HEAD"],
            "maxAgeSeconds": 3600
          }
        ]
      2. JSON_FILE_NAME 替换为您在上一步中创建的 JSON 文件的名称,然后运行以下命令:
        gsutil cors set JSON_FILE_NAME.json gs://STORAGE_BUCKET_NAME
    3. 在 Cloud Storage 存储桶中,选择一个由转码作业生成的 MP4 文件或清单文件。在该文件的公开访问权限列中,点击复制网址
    4. 导航到在线直播播放器 Shaka Player
    5. 点击顶部导航栏中的自定义内容
    6. 点击 + 按钮。
    7. 将文件的公开网址粘贴到清单网址框中。

      在 Shaka Player 中输入文件的网址。

    8. 名称框中输入一个名称。

    9. 点击保存

    10. 点击播放

    清理

    为避免因本页中使用的资源导致您的 Google Cloud 帐号产生费用,请按照以下步骤操作。

    删除存储桶

    1. 在 Google Cloud Console 中,转到 Cloud Storage 浏览器页面。

      转到“Cloud Storage 浏览器”页面

    2. 选中所创建存储桶旁边的复选框。

    3. 点击删除

    4. 在显示的弹出式窗口中,点击删除以永久删除存储桶及其内容。

    删除作业

    REST 和命令行

    在使用任何请求数据之前,请先进行以下替换:

  • JOB_ID:您创建的作业的 ID。
  • PROJECT_ID:您的 Google Cloud 项目 ID。
  • LOCATION:您的作业的位置。请使用其中一个受支持的区域
    • us-central1
    • us-west1
    • us-west2
    • us-east1
    • us-east4
    • southamerica-east1
    • asia-east1
    • asia-south1
    • asia-southeast1
    • europe-west1
    • europe-west2
    • europe-west4
  • 根据您发送的请求,请展开以下选项之一:

    您应该收到类似以下内容的 JSON 响应:

    {}
    

    gcloud

    1. gcloud 命令进行以下替换:
      • JOB_ID:您创建的作业的 ID。
      • LOCATION:您的作业的位置。请使用其中一个受支持的区域
        • us-central1
        • us-west1
        • us-west2
        • us-east1
        • us-east4
        • southamerica-east1
        • asia-east1
        • asia-south1
        • asia-southeast1
        • europe-west1
        • europe-west2
        • europe-west4
    2. 运行以下命令:
      gcloud transcoder jobs delete JOB_ID --location=LOCATION
      您应该会看到如下所示的响应:
      Deleted job [projects/PROJECT_ID/locations/LOCATION/jobs/JOB_ID].
      

    C#

    在尝试此示例之前,请按照 Transcoder API 快速入门:使用客户端库中的 C# 设置说明进行操作。 如需了解详情,请参阅 Transcoder API C# API 参考文档

    
    using Google.Cloud.Video.Transcoder.V1;
    
    public class DeleteJobSample
    {
        public void DeleteJob(string projectId, string location, string jobId)
        {
            // Create the client.
            TranscoderServiceClient client = TranscoderServiceClient.Create();
    
            // Build the job name.
            JobName jobName = JobName.FromProjectLocationJob(projectId, location, jobId);
    
            // Call the API.
            client.DeleteJob(jobName);
        }
    }

    Go

    在尝试此示例之前,请按照 Transcoder API 快速入门:使用客户端库中的 Go 设置说明进行操作。 如需了解详情,请参阅 Transcoder API Go API 参考文档

    import (
    	"context"
    	"fmt"
    	"io"
    
    	transcoder "cloud.google.com/go/video/transcoder/apiv1"
    	transcoderpb "google.golang.org/genproto/googleapis/cloud/video/transcoder/v1"
    )
    
    // deleteJob deletes a previously-created job. See
    // https://cloud.google.com/transcoder/docs/how-to/jobs#delete_jobs for more
    // information.
    func deleteJob(w io.Writer, projectID string, location string, jobID string) error {
    	// projectID := "my-project-id"
    	// location := "us-central1"
    	// jobID := "my-job-id"
    	ctx := context.Background()
    	client, err := transcoder.NewClient(ctx)
    	if err != nil {
    		return fmt.Errorf("NewClient: %v", err)
    	}
    	defer client.Close()
    
    	req := &transcoderpb.DeleteJobRequest{
    		Name: fmt.Sprintf("projects/%s/locations/%s/jobs/%s", projectID, location, jobID),
    	}
    
    	err = client.DeleteJob(ctx, req)
    	if err != nil {
    		return fmt.Errorf("DeleteJob: %v", err)
    	}
    
    	fmt.Fprintf(w, "Deleted job")
    	return nil
    }
    

    Java

    在尝试此示例之前,请按照 Transcoder API 快速入门:使用客户端库中的 Java 设置说明进行操作。 如需了解详情,请参阅 Transcoder API Java API 参考文档

    
    import com.google.cloud.video.transcoder.v1.DeleteJobRequest;
    import com.google.cloud.video.transcoder.v1.JobName;
    import com.google.cloud.video.transcoder.v1.TranscoderServiceClient;
    import java.io.IOException;
    
    public class DeleteJob {
    
      public static void main(String[] args) throws Exception {
        // TODO(developer): Replace these variables before running the sample.
        String projectId = "my-project-id";
        String location = "us-central1";
        String jobId = "my-job-id";
    
        deleteJob(projectId, location, jobId);
      }
    
      // Deletes a job.
      public static void deleteJob(String projectId, String location, String jobId) throws IOException {
        // Initialize client that will be used to send requests. This client only needs to be created
        // once, and can be reused for multiple requests.
        try (TranscoderServiceClient transcoderServiceClient = TranscoderServiceClient.create()) {
          JobName jobName =
              JobName.newBuilder().setProject(projectId).setLocation(location).setJob(jobId).build();
          var deleteJobRequest = DeleteJobRequest.newBuilder().setName(jobName.toString()).build();
    
          // Send the delete job request and process the response.
          transcoderServiceClient.deleteJob(deleteJobRequest);
          System.out.println("Deleted job");
        }
      }
    }

    Node.js

    在尝试此示例之前,请按照 Transcoder API 快速入门:使用客户端库中的 Node.js 设置说明进行操作。 如需了解详情,请参阅 Transcoder API Node.js API 参考文档

    /**
     * TODO(developer): Uncomment these variables before running the sample.
     */
    // projectId = 'my-project-id';
    // location = 'us-central1';
    // jobId = 'my-job-id';
    
    // Imports the Transcoder library
    const {TranscoderServiceClient} =
      require('@google-cloud/video-transcoder').v1;
    
    // Instantiates a client
    const transcoderServiceClient = new TranscoderServiceClient();
    
    async function deleteJob() {
      // Construct request
      const request = {
        name: transcoderServiceClient.jobPath(projectId, location, jobId),
      };
      await transcoderServiceClient.deleteJob(request);
      console.log('Deleted job');
    }
    
    deleteJob();

    PHP

    在尝试此示例之前,请按照 Transcoder API 快速入门:使用客户端库中的 PHP 设置说明进行操作。 如需了解详情,请参阅 Transcoder API PHP API 参考文档

    use Google\Cloud\Video\Transcoder\V1\TranscoderServiceClient;
    
    /**
     * Deletes a Transcoder job.
     *
     * @param string $projectId The ID of your Google Cloud Platform project.
     * @param string $location The location of the job.
     * @param string $jobId The job ID.
     */
    function delete_job($projectId, $location, $jobId)
    {
        // Instantiate a client.
        $transcoderServiceClient = new TranscoderServiceClient();
    
        $formattedName = $transcoderServiceClient->jobName($projectId, $location, $jobId);
        $transcoderServiceClient->deleteJob($formattedName);
    
        print('Deleted job' . PHP_EOL);
    }

    Python

    在尝试此示例之前,请按照 Transcoder API 快速入门:使用客户端库中的 Python 设置说明进行操作。 如需了解详情,请参阅 Transcoder API Python API 参考文档

    
    import argparse
    
    from google.cloud.video.transcoder_v1.services.transcoder_service import (
        TranscoderServiceClient,
    )
    
    def delete_job(project_id, location, job_id):
        """Gets a job.
    
        Args:
            project_id: The GCP project ID.
            location: The location this job is in.
            job_id: The job ID."""
    
        client = TranscoderServiceClient()
    
        name = f"projects/{project_id}/locations/{location}/jobs/{job_id}"
        response = client.delete_job(name=name)
        print("Deleted job")
        return response
    
    

    Ruby

    在尝试此示例之前,请按照 Transcoder API 快速入门:使用客户端库中的 Ruby 设置说明进行操作。 如需了解详情,请参阅 Transcoder API Ruby API 参考文档

    # project_id = "YOUR-GOOGLE-CLOUD-PROJECT"  # (e.g. "my-project")
    # location   = "YOUR-JOB-LOCATION"  # (e.g. "us-central1")
    # job_id     = "YOUR-JOB-ID"  # (e.g. "c82c295b-3f5a-47df-8562-938a89d40fd0")
    
    # Require the Transcoder client library.
    require "google/cloud/video/transcoder"
    
    # Create a Transcoder client.
    client = Google::Cloud::Video::Transcoder.transcoder_service
    
    # Build the resource name of the job.
    name = client.job_path project: project_id, location: location, job: job_id
    
    # Delete the job.
    client.delete_job name: name
    
    # Print a success message.
    puts "Deleted job"

    撤消凭据

    1. 可选:撤消您创建的身份验证凭据,并删除本地凭据文件。

      gcloud auth application-default revoke
    2. 可选:从 gcloud CLI 撤消凭据。

      gcloud auth revoke

    后续步骤