Membuat tugas yang menghasilkan spritesheet dengan jumlah gambar yang bervariabel

Buat tugas transcoding yang menghasilkan spritesheet frame video. Anda menentukan frekuensi pengambilan gambar frame video dari video output.

Jelajahi lebih lanjut

Untuk dokumentasi mendetail yang menyertakan contoh kode ini, lihat artikel berikut:

• Membuat spritesheet frame video

Contoh kode

C#

Sebelum mencoba contoh ini, ikuti petunjuk penyiapan C# di Panduan memulai Transcoder API menggunakan library klien. Untuk informasi selengkapnya, lihat Dokumentasi referensi API C# Transcoder API.

Untuk melakukan autentikasi ke Transcoder API, siapkan Kredensial Default Aplikasi. Untuk mengetahui informasi selengkapnya, baca Menyiapkan autentikasi untuk lingkungan pengembangan lokal.

using Google.Api.Gax.ResourceNames;
using Google.Cloud.Video.Transcoder.V1;
using Google.Protobuf.WellKnownTypes;
using System;

public class CreateJobWithPeriodicImagesSpritesheetSample
{
    public const string SmallSpritesheetFilePrefix = "small-sprite-sheet";
    public const string LargeSpritesheetFilePrefix = "large-sprite-sheet";
    public Job CreateJobWithPeriodicImagesSpritesheet(
        string projectId, string location, string inputUri, string outputUri)
    {
        // Create the client.
        TranscoderServiceClient client = TranscoderServiceClient.Create();

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

        // Build the job config.
        VideoStream videoStream0 = new VideoStream
        {
            H264 = new VideoStream.Types.H264CodecSettings
            {
                BitrateBps = 550000,
                FrameRate = 60,
                HeightPixels = 360,
                WidthPixels = 640
            }
        };

        AudioStream audioStream0 = new AudioStream
        {
            Codec = "aac",
            BitrateBps = 64000
        };

        // Generates a spritesheet of small images taken periodically from the
        // input video. To preserve the source aspect ratio, you should set the
        // SpriteWidthPixels field or the SpriteHeightPixels field, but not
        // both (the API will automatically calculate the missing field). For
        // this sample, we don't care about the aspect ratio so we set both
        // fields.
        SpriteSheet smallSpriteSheet = new SpriteSheet
        {
            FilePrefix = SmallSpritesheetFilePrefix,
            SpriteHeightPixels = 32,
            SpriteWidthPixels = 64,
            Interval = Duration.FromTimeSpan(TimeSpan.FromSeconds(7))
        };

        // Generates a spritesheet of larger images taken periodically from the
        // input video. To preserve the source aspect ratio, you should set the
        // SpriteWidthPixels field or the SpriteHeightPixels field, but not
        // both (the API will automatically calculate the missing field). For
        // this sample, we don't care about the aspect ratio so we set both
        // fields.
        SpriteSheet largeSpriteSheet = new SpriteSheet
        {
            FilePrefix = LargeSpritesheetFilePrefix,
            SpriteHeightPixels = 72,
            SpriteWidthPixels = 128,
            Interval = Duration.FromTimeSpan(TimeSpan.FromSeconds(7))
        };

        ElementaryStream elementaryStream0 = new ElementaryStream
        {
            Key = "video_stream0",
            VideoStream = videoStream0
        };

        ElementaryStream elementaryStream1 = new ElementaryStream
        {
            Key = "audio_stream0",
            AudioStream = audioStream0
        };

        MuxStream muxStream0 = new MuxStream
        {
            Key = "sd",
            Container = "mp4",
            ElementaryStreams = { "video_stream0", "audio_stream0" }
        };

        Input input = new Input
        {
            Key = "input0",
            Uri = inputUri
        };

        Output output = new Output
        {
            Uri = outputUri
        };

        JobConfig jobConfig = new JobConfig
        {
            Inputs = { input },
            Output = output,
            ElementaryStreams = { elementaryStream0, elementaryStream1 },
            MuxStreams = { muxStream0 },
            SpriteSheets = { smallSpriteSheet, largeSpriteSheet }
        };

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

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

        // Return the result.
        return job;
    }
}

Go

Sebelum mencoba contoh ini, ikuti petunjuk penyiapan Go di Panduan memulai Transcoder API menggunakan library klien. Untuk informasi selengkapnya, lihat Dokumentasi referensi API Go Transcoder API.

Untuk melakukan autentikasi ke Transcoder API, siapkan Kredensial Default Aplikasi. Untuk mengetahui informasi selengkapnya, baca Menyiapkan autentikasi untuk lingkungan pengembangan lokal.

import (
	"context"
	"fmt"
	"io"

	"github.com/golang/protobuf/ptypes/duration"

	transcoder "cloud.google.com/go/video/transcoder/apiv1"
	"cloud.google.com/go/video/transcoder/apiv1/transcoderpb"
)

// createJobWithPeriodicImagesSpritesheet creates a job from an ad-hoc configuration and generates
// two spritesheets from the input video. Each spritesheet contains images that are captured
// periodically based on a user-defined time interval.
func createJobWithPeriodicImagesSpritesheet(w io.Writer, projectID string, location string, inputURI string, outputURI string) error {
	// projectID := "my-project-id"
	// location := "us-central1"
	// inputURI := "gs://my-bucket/my-video-file"
	// outputURI := "gs://my-bucket/my-output-folder/"
	ctx := context.Background()
	client, err := transcoder.NewClient(ctx)
	if err != nil {
		return fmt.Errorf("NewClient: %w", 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_Config{
				Config: &transcoderpb.JobConfig{
					ElementaryStreams: []*transcoderpb.ElementaryStream{
						{
							Key: "video_stream0",
							ElementaryStream: &transcoderpb.ElementaryStream_VideoStream{
								VideoStream: &transcoderpb.VideoStream{
									CodecSettings: &transcoderpb.VideoStream_H264{
										H264: &transcoderpb.VideoStream_H264CodecSettings{
											BitrateBps:   550000,
											FrameRate:    60,
											HeightPixels: 360,
											WidthPixels:  640,
										},
									},
								},
							},
						},
						{
							Key: "audio_stream0",
							ElementaryStream: &transcoderpb.ElementaryStream_AudioStream{
								AudioStream: &transcoderpb.AudioStream{
									Codec:      "aac",
									BitrateBps: 64000,
								},
							},
						},
					},
					MuxStreams: []*transcoderpb.MuxStream{
						{
							Key:               "sd",
							Container:         "mp4",
							ElementaryStreams: []string{"video_stream0", "audio_stream0"},
						},
					},
					SpriteSheets: []*transcoderpb.SpriteSheet{
						{
							FilePrefix:         "small-sprite-sheet",
							SpriteWidthPixels:  64,
							SpriteHeightPixels: 32,
							ExtractionStrategy: &transcoderpb.SpriteSheet_Interval{
								Interval: &duration.Duration{
									Seconds: 7,
								},
							},
						},
						{
							FilePrefix:         "large-sprite-sheet",
							SpriteWidthPixels:  128,
							SpriteHeightPixels: 72,
							ExtractionStrategy: &transcoderpb.SpriteSheet_Interval{
								Interval: &duration.Duration{
									Seconds: 7,
								},
							},
						},
					},
				},
			},
		},
	}
	// Creates the job. Jobs take a variable amount of time to run. You can query for the job state.
	// See https://cloud.google.com/transcoder/docs/how-to/jobs#check_job_status for more info.
	response, err := client.CreateJob(ctx, req)
	if err != nil {
		return fmt.Errorf("createJobWithPeriodicImagesSpritesheet: %w", err)
	}

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

Java

Sebelum mencoba contoh ini, ikuti petunjuk penyiapan Java di Panduan memulai Transcoder API menggunakan library klien. Untuk informasi selengkapnya, lihat Dokumentasi referensi API Java Transcoder API.

Untuk melakukan autentikasi ke Transcoder API, siapkan Kredensial Default Aplikasi. Untuk mengetahui informasi selengkapnya, baca Menyiapkan autentikasi untuk lingkungan pengembangan lokal.

import com.google.cloud.video.transcoder.v1.AudioStream;
import com.google.cloud.video.transcoder.v1.CreateJobRequest;
import com.google.cloud.video.transcoder.v1.ElementaryStream;
import com.google.cloud.video.transcoder.v1.Input;
import com.google.cloud.video.transcoder.v1.Job;
import com.google.cloud.video.transcoder.v1.JobConfig;
import com.google.cloud.video.transcoder.v1.LocationName;
import com.google.cloud.video.transcoder.v1.MuxStream;
import com.google.cloud.video.transcoder.v1.Output;
import com.google.cloud.video.transcoder.v1.SpriteSheet;
import com.google.cloud.video.transcoder.v1.TranscoderServiceClient;
import com.google.cloud.video.transcoder.v1.VideoStream;
import com.google.protobuf.Duration;
import java.io.IOException;

public class CreateJobWithPeriodicImagesSpritesheet {

  public static final String smallSpritesheetFilePrefix = "small-sprite-sheet";
  public static final String largeSpritesheetFilePrefix = "large-sprite-sheet";
  public static final String spritesheetFileSuffix = "0000000000.jpeg";

  public static void main(String[] args) throws IOException {
    // 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/";

    createJobWithPeriodicImagesSpritesheet(projectId, location, inputUri, outputUri);
  }

  // Creates a job from an ad-hoc configuration and generates two spritesheets from the input video.
  // Each spritesheet contains images that are captured periodically based on a user-defined time
  // interval.
  public static void createJobWithPeriodicImagesSpritesheet(
      String projectId, String location, String inputUri, String outputUri) 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()) {

      VideoStream videoStream0 =
          VideoStream.newBuilder()
              .setH264(
                  VideoStream.H264CodecSettings.newBuilder()
                      .setBitrateBps(550000)
                      .setFrameRate(60)
                      .setHeightPixels(360)
                      .setWidthPixels(640))
              .build();

      AudioStream audioStream0 =
          AudioStream.newBuilder().setCodec("aac").setBitrateBps(64000).build();

      // Generates a spritesheet of small images taken periodically from the input video. To
      // preserve the source aspect ratio, you should set the spriteWidthPixels field or the
      // spriteHeightPixels field, but not both.
      SpriteSheet smallSpriteSheet =
          SpriteSheet.newBuilder()
              .setFilePrefix(smallSpritesheetFilePrefix)
              .setSpriteHeightPixels(32)
              .setSpriteWidthPixels(64)
              .setInterval(Duration.newBuilder().setSeconds(7).build())
              .build();

      // Generates a spritesheet of larger images taken periodically from the input video. To
      SpriteSheet largeSpriteSheet =
          SpriteSheet.newBuilder()
              .setFilePrefix(largeSpritesheetFilePrefix)
              .setSpriteHeightPixels(72)
              .setSpriteWidthPixels(128)
              .setInterval(Duration.newBuilder().setSeconds(7).build())
              .build();

      JobConfig config =
          JobConfig.newBuilder()
              .addInputs(Input.newBuilder().setKey("input0").setUri(inputUri))
              .setOutput(Output.newBuilder().setUri(outputUri))
              .addElementaryStreams(
                  ElementaryStream.newBuilder()
                      .setKey("video_stream0")
                      .setVideoStream(videoStream0))
              .addElementaryStreams(
                  ElementaryStream.newBuilder()
                      .setKey("audio_stream0")
                      .setAudioStream(audioStream0))
              .addMuxStreams(
                  MuxStream.newBuilder()
                      .setKey("sd")
                      .setContainer("mp4")
                      .addElementaryStreams("video_stream0")
                      .addElementaryStreams("audio_stream0")
                      .build())
              .addSpriteSheets(smallSpriteSheet) // Add the spritesheet config to the job config
              .addSpriteSheets(largeSpriteSheet) // Add the spritesheet config to the job config
              .build();

      CreateJobRequest createJobRequest =
          CreateJobRequest.newBuilder()
              .setJob(
                  Job.newBuilder()
                      .setInputUri(inputUri)
                      .setOutputUri(outputUri)
                      .setConfig(config)
                      .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

Sebelum mencoba contoh ini, ikuti petunjuk penyiapan Node.js di Panduan memulai Transcoder API menggunakan library klien. Untuk informasi selengkapnya, lihat Dokumentasi referensi API Node.js Transcoder API.

Untuk melakukan autentikasi ke Transcoder API, siapkan Kredensial Default Aplikasi. Untuk mengetahui informasi selengkapnya, baca Menyiapkan autentikasi untuk lingkungan pengembangan lokal.

/**
 * 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/';

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

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

async function createJobWithPeriodicImagesSpritesheet() {
  // Construct request
  const request = {
    parent: transcoderServiceClient.locationPath(projectId, location),
    job: {
      inputUri: inputUri,
      outputUri: outputUri,
      config: {
        elementaryStreams: [
          {
            key: 'video-stream0',
            videoStream: {
              h264: {
                heightPixels: 360,
                widthPixels: 640,
                bitrateBps: 550000,
                frameRate: 60,
              },
            },
          },
          {
            key: 'audio-stream0',
            audioStream: {
              codec: 'aac',
              bitrateBps: 64000,
            },
          },
        ],
        muxStreams: [
          {
            key: 'sd',
            container: 'mp4',
            elementaryStreams: ['video-stream0', 'audio-stream0'],
          },
        ],
        spriteSheets: [
          {
            filePrefix: 'small-sprite-sheet',
            spriteHeightPixels: 32,
            spriteWidthPixels: 64,
            interval: {
              seconds: 7,
            },
          },
          {
            filePrefix: 'large-sprite-sheet',
            spriteHeightPixels: 72,
            spriteWidthPixels: 128,
            interval: {
              seconds: 7,
            },
          },
        ],
      },
    },
  };

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

createJobWithPeriodicImagesSpritesheet();

PHP

Sebelum mencoba contoh ini, ikuti petunjuk penyiapan PHP di Panduan memulai Transcoder API menggunakan library klien. Untuk informasi selengkapnya, lihat Dokumentasi referensi API PHP Transcoder API.

Untuk melakukan autentikasi ke Transcoder API, siapkan Kredensial Default Aplikasi. Untuk mengetahui informasi selengkapnya, baca Menyiapkan autentikasi untuk lingkungan pengembangan lokal.

use Google\Cloud\Video\Transcoder\V1\AudioStream;
use Google\Cloud\Video\Transcoder\V1\Client\TranscoderServiceClient;
use Google\Cloud\Video\Transcoder\V1\CreateJobRequest;
use Google\Cloud\Video\Transcoder\V1\ElementaryStream;
use Google\Cloud\Video\Transcoder\V1\Job;
use Google\Cloud\Video\Transcoder\V1\JobConfig;
use Google\Cloud\Video\Transcoder\V1\MuxStream;
use Google\Cloud\Video\Transcoder\V1\SpriteSheet;
use Google\Cloud\Video\Transcoder\V1\VideoStream;
use Google\Protobuf\Duration;

/**
 * Creates a job that generates two spritesheets from the input video. Each
 * spritesheet contains images that are captured periodically.
 *
 * @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 $outputUri Uri of the video output folder in the Cloud Storage bucket.
 */
function create_job_with_periodic_images_spritesheet($projectId, $location, $inputUri, $outputUri)
{
    // Instantiate a client.
    $transcoderServiceClient = new TranscoderServiceClient();

    $formattedParent = $transcoderServiceClient->locationName($projectId, $location);
    $jobConfig =
        (new JobConfig())->setElementaryStreams([
            (new ElementaryStream())
                ->setKey('video-stream0')
                ->setVideoStream(
                    (new VideoStream())
                        ->setH264(
                            (new VideoStream\H264CodecSettings())
                                ->setBitrateBps(550000)
                                ->setFrameRate(60)
                                ->setHeightPixels(360)
                                ->setWidthPixels(640)
                        )
                ),
            (new ElementaryStream())
                ->setKey('audio-stream0')
                ->setAudioStream(
                    (new AudioStream())
                        ->setCodec('aac')
                        ->setBitrateBps(64000)
                )
        ])->setMuxStreams([
            (new MuxStream())
                ->setKey('sd')
                ->setContainer('mp4')
                ->setElementaryStreams(['video-stream0', 'audio-stream0'])
        ])->setSpriteSheets([
            (new SpriteSheet())
                ->setFilePrefix('small-sprite-sheet')
                ->setSpriteWidthPixels(64)
                ->setSpriteHeightPixels(32)
                ->setInterval(
                    (new Duration())
                        ->setSeconds(7)
                ),
            (new SpriteSheet())
                ->setFilePrefix('large-sprite-sheet')
                ->setSpriteWidthPixels(128)
                ->setSpriteHeightPixels(72)
                ->setInterval(new Duration(['seconds' => 7]))
        ]);

    $job = (new Job())
        ->setInputUri($inputUri)
        ->setOutputUri($outputUri)
        ->setConfig($jobConfig);
    $request = (new CreateJobRequest())
        ->setParent($formattedParent)
        ->setJob($job);

    $response = $transcoderServiceClient->createJob($request);

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

Python

Sebelum mencoba contoh ini, ikuti petunjuk penyiapan Python di Panduan memulai Transcoder API menggunakan library klien. Untuk informasi selengkapnya, lihat Dokumentasi referensi API Python Transcoder API.

Untuk melakukan autentikasi ke Transcoder API, siapkan Kredensial Default Aplikasi. Untuk mengetahui informasi selengkapnya, baca Menyiapkan autentikasi untuk lingkungan pengembangan lokal.

import argparse

from google.cloud.video import transcoder_v1
from google.cloud.video.transcoder_v1.services.transcoder_service import (
    TranscoderServiceClient,
)
from google.protobuf import duration_pb2 as duration

def create_job_with_periodic_images_spritesheet(
    project_id: str,
    location: str,
    input_uri: str,
    output_uri: str,
) -> transcoder_v1.types.resources.Job:
    """Creates a job based on an ad-hoc job configuration that generates two spritesheets.

    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.

    Returns:
        The job resource.
    """

    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.config = transcoder_v1.types.JobConfig(
        # Create an ad-hoc job. For more information, see https://cloud.google.com/transcoder/docs/how-to/jobs#create_jobs_ad_hoc.
        # See all options for the job config at https://cloud.google.com/transcoder/docs/reference/rest/v1/JobConfig.
        elementary_streams=[
            # This section defines the output video stream.
            transcoder_v1.types.ElementaryStream(
                key="video-stream0",
                video_stream=transcoder_v1.types.VideoStream(
                    h264=transcoder_v1.types.VideoStream.H264CodecSettings(
                        height_pixels=360,
                        width_pixels=640,
                        bitrate_bps=550000,
                        frame_rate=60,
                    ),
                ),
            ),
            # This section defines the output audio stream.
            transcoder_v1.types.ElementaryStream(
                key="audio-stream0",
                audio_stream=transcoder_v1.types.AudioStream(
                    codec="aac", bitrate_bps=64000
                ),
            ),
        ],
        # This section multiplexes the output audio and video together into a container.
        mux_streams=[
            transcoder_v1.types.MuxStream(
                key="sd",
                container="mp4",
                elementary_streams=["video-stream0", "audio-stream0"],
            ),
        ],
        # Generate two sprite sheets from the input video into the GCS bucket. For more information, see
        # https://cloud.google.com/transcoder/docs/how-to/generate-spritesheet#generate_image_periodically.
        sprite_sheets=[
            # Generate a sprite sheet with 64x32px images. An image is taken every 7 seconds from the video.
            transcoder_v1.types.SpriteSheet(
                file_prefix="small-sprite-sheet",
                sprite_width_pixels=64,
                sprite_height_pixels=32,
                interval=duration.Duration(
                    seconds=7,
                ),
            ),
            # Generate a sprite sheet with 128x72px images. An image is taken every 7 seconds from the video.
            transcoder_v1.types.SpriteSheet(
                file_prefix="large-sprite-sheet",
                sprite_width_pixels=128,
                sprite_height_pixels=72,
                interval=duration.Duration(
                    seconds=7,
                ),
            ),
        ],
    )
    response = client.create_job(parent=parent, job=job)
    print(f"Job: {response.name}")
    return response

Ruby

Sebelum mencoba contoh ini, ikuti petunjuk penyiapan Ruby di Panduan memulai Transcoder API menggunakan library klien. Untuk informasi selengkapnya, lihat Dokumentasi referensi API Ruby Transcoder API.

Untuk melakukan autentikasi ke Transcoder API, siapkan Kredensial Default Aplikasi. Untuk mengetahui informasi selengkapnya, baca Menyiapkan autentikasi untuk lingkungan pengembangan lokal.

# 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/")

# 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

# Build the job config.
new_job = {
  input_uri: input_uri,
  output_uri: output_uri,
  config: {
    elementary_streams: [
      {
        key: "video-stream0",
        video_stream: {
          h264: {
            height_pixels: 360,
            width_pixels: 640,
            bitrate_bps: 550_000,
            frame_rate: 60
          }
        }
      },
      {
        key: "audio-stream0",
        audio_stream: {
          codec: "aac",
          bitrate_bps: 64_000
        }
      }
    ],
    mux_streams: [
      {
        key: "sd",
        container: "mp4",
        elementary_streams: [
          "video-stream0",
          "audio-stream0"
        ]
      }
    ],
    sprite_sheets: [
      {
        file_prefix: "small-sprite-sheet",
        sprite_width_pixels: 64,
        sprite_height_pixels: 32,
        interval: {
          seconds: 7
        }
      },
      {
        file_prefix: "large-sprite-sheet",
        sprite_width_pixels: 128,
        sprite_height_pixels: 72,
        interval: {
          seconds: 7
        }
      }
    ]
  }
}

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

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

Langkah selanjutnya

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