Membuat tugas transcoding yang dapat menggunakan teks dari file mandiri. Teks dapat menyertakan teks tertutup dan subtitel.
Jelajahi lebih lanjut
Untuk dokumentasi mendetail yang menyertakan contoh kode ini, lihat artikel berikut:
Contoh kode
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"
)
// createJobWithStandaloneCaptions creates a job that can use subtitles from a
// standalone file. See https://cloud.google.com/transcoder/docs/how-to/captions-and-subtitles
// for more information.
func createJobWithStandaloneCaptions(w io.Writer, projectID string, location string, inputVideoURI string, inputSubtitles1URI string, inputSubtitles2URI string, outputURI string) error {
// projectID := "my-project-id"
// location := "us-central1"
// inputVideoURI := "gs://my-bucket/my-video-file"
// inputSubtitles1URI := "gs://my-bucket/my-subtitles-file1"
// inputSubtitles2URI := "gs://my-bucket/my-subtitles-file2"
// 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()
// Set up elementary streams. The InputKey field refers to inputs in
// the Inputs array defined the job config.
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,
},
},
},
{
Key: "vtt_stream_en",
ElementaryStream: &transcoderpb.ElementaryStream_TextStream{
TextStream: &transcoderpb.TextStream{
Codec: "webvtt",
LanguageCode: "en-US",
DisplayName: "English",
Mapping: []*transcoderpb.TextStream_TextMapping{
{
AtomKey: "atom0",
InputKey: "subtitle_input_en",
},
},
},
},
},
{
Key: "vtt_stream_es",
ElementaryStream: &transcoderpb.ElementaryStream_TextStream{
TextStream: &transcoderpb.TextStream{
Codec: "webvtt",
LanguageCode: "es-ES",
DisplayName: "Spanish",
Mapping: []*transcoderpb.TextStream_TextMapping{
{
AtomKey: "atom0",
InputKey: "subtitle_input_es",
},
},
},
},
},
}
req := &transcoderpb.CreateJobRequest{
Parent: fmt.Sprintf("projects/%s/locations/%s", projectID, location),
Job: &transcoderpb.Job{
OutputUri: outputURI,
JobConfig: &transcoderpb.Job_Config{
Config: &transcoderpb.JobConfig{
Inputs: []*transcoderpb.Input{
{
Key: "input0",
Uri: inputVideoURI,
},
{
Key: "subtitle_input_en",
Uri: inputSubtitles1URI,
},
{
Key: "subtitle_input_es",
Uri: inputSubtitles2URI,
},
},
EditList: []*transcoderpb.EditAtom{
{
Key: "atom0",
Inputs: []string{"input0", "subtitle_input_en", "subtitle_input_es"},
},
},
ElementaryStreams: elementaryStreams,
MuxStreams: []*transcoderpb.MuxStream{
{
Key: "sd-hls-fmp4",
Container: "fmp4",
ElementaryStreams: []string{"video_stream0"},
},
{
Key: "audio-hls-fmp4",
Container: "fmp4",
ElementaryStreams: []string{"audio_stream0"},
},
{
Key: "text-vtt-en",
Container: "vtt",
ElementaryStreams: []string{"vtt_stream_en"},
SegmentSettings: &transcoderpb.SegmentSettings{
SegmentDuration: &duration.Duration{
Seconds: 6,
},
IndividualSegments: true,
},
},
{
Key: "text-vtt-es",
Container: "vtt",
ElementaryStreams: []string{"vtt_stream_es"},
SegmentSettings: &transcoderpb.SegmentSettings{
SegmentDuration: &duration.Duration{
Seconds: 6,
},
IndividualSegments: true,
},
},
},
Manifests: []*transcoderpb.Manifest{
{
FileName: "manifest.m3u8",
Type: transcoderpb.Manifest_HLS,
MuxStreams: []string{"sd-hls-fmp4", "audio-hls-fmp4", "text-vtt-en", "text-vtt-es"},
},
},
},
},
},
}
// Creates the job. Jobs take a variable amount of time to run.
// You can query for the job state; see getJob() in get_job.go.
response, err := client.CreateJob(ctx, req)
if err != nil {
return fmt.Errorf("CreateJob: %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.EditAtom;
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.Manifest;
import com.google.cloud.video.transcoder.v1.Manifest.ManifestType;
import com.google.cloud.video.transcoder.v1.MuxStream;
import com.google.cloud.video.transcoder.v1.Output;
import com.google.cloud.video.transcoder.v1.SegmentSettings;
import com.google.cloud.video.transcoder.v1.TextStream;
import com.google.cloud.video.transcoder.v1.TextStream.TextMapping;
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 CreateJobWithStandaloneCaptions {
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 inputVideoUri = "gs://my-bucket/my-video-file";
String inputCaptionsUri = "gs://my-bucket/my-captions-file";
String outputUri = "gs://my-bucket/my-output-folder/";
createJobWithStandaloneCaptions(
projectId, location, inputVideoUri, inputCaptionsUri, outputUri);
}
// Creates a job from an ad-hoc configuration that can use captions from a standalone file.
public static void createJobWithStandaloneCaptions(
String projectId,
String location,
String inputVideoUri,
String inputCaptionsUri,
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();
TextStream textStream0 =
TextStream.newBuilder()
.setCodec("webvtt")
.addMapping(
0,
TextMapping.newBuilder()
.setAtomKey("atom0")
.setInputKey("caption_input0")
.setInputTrack(0)
.build())
.build();
JobConfig config =
JobConfig.newBuilder()
.addInputs(Input.newBuilder().setKey("input0").setUri(inputVideoUri))
.addInputs(Input.newBuilder().setKey("caption_input0").setUri(inputCaptionsUri))
.addEditList(
0, // Index in the edit list
EditAtom.newBuilder()
.setKey("atom0")
.addInputs("input0")
.addInputs("caption_input0")
.build())
.setOutput(Output.newBuilder().setUri(outputUri))
.addElementaryStreams(
ElementaryStream.newBuilder()
.setKey("video_stream0")
.setVideoStream(videoStream0))
.addElementaryStreams(
ElementaryStream.newBuilder()
.setKey("audio_stream0")
.setAudioStream(audioStream0))
.addElementaryStreams(
ElementaryStream.newBuilder().setKey("vtt_stream0").setTextStream(textStream0))
.addMuxStreams(
0,
MuxStream.newBuilder()
.setKey("sd_hls_fmp4")
.setContainer("fmp4")
.addElementaryStreams("video_stream0")
.build())
.addMuxStreams(
1,
MuxStream.newBuilder()
.setKey("audio_hls_fmp4")
.setContainer("fmp4")
.addElementaryStreams("audio_stream0")
.build())
.addMuxStreams(
2,
MuxStream.newBuilder()
.setKey("text_vtt")
.setContainer("vtt")
.addElementaryStreams("vtt_stream0")
.setSegmentSettings(
SegmentSettings.newBuilder()
.setSegmentDuration(Duration.newBuilder().setSeconds(6).build())
.setIndividualSegments(true)
.build())
.build())
.addManifests(
0,
Manifest.newBuilder()
.setFileName("manifest.m3u8")
.setType(ManifestType.HLS)
.addMuxStreams("sd_hls_fmp4")
.addMuxStreams("audio_hls_fmp4")
.addMuxStreams("text_vtt")
.build())
.build();
CreateJobRequest createJobRequest =
CreateJobRequest.newBuilder()
.setJob(Job.newBuilder().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';
// inputVideoUri = 'gs://my-bucket/my-video-file';
// inputSubtitles1Uri = 'gs://my-bucket/my-captions-file1';
// inputSubtitles2Uri = 'gs://my-bucket/my-captions-file2';
// 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 createJobWithStandaloneCaptions() {
// Construct request
const request = {
parent: transcoderServiceClient.locationPath(projectId, location),
job: {
outputUri: outputUri,
config: {
inputs: [
{
key: 'input0',
uri: inputVideoUri,
},
{
key: 'subtitle_input_en',
uri: inputSubtitles1Uri,
},
{
key: 'subtitle_input_es',
uri: inputSubtitles2Uri,
},
],
editList: [
{
key: 'atom0',
inputs: ['input0', 'subtitle_input_en', 'subtitle_input_es'],
},
],
elementaryStreams: [
{
key: 'video-stream0',
videoStream: {
h264: {
heightPixels: 360,
widthPixels: 640,
bitrateBps: 550000,
frameRate: 60,
},
},
},
{
key: 'audio-stream0',
audioStream: {
codec: 'aac',
bitrateBps: 64000,
},
},
{
key: 'vtt-stream-en',
textStream: {
codec: 'webvtt',
languageCode: 'en-US',
displayName: 'English',
mapping: [
{
atomKey: 'atom0',
inputKey: 'subtitle_input_en',
},
],
},
},
{
key: 'vtt-stream-es',
textStream: {
codec: 'webvtt',
languageCode: 'es-ES',
displayName: 'Spanish',
mapping: [
{
atomKey: 'atom0',
inputKey: 'subtitle_input_es',
},
],
},
},
],
muxStreams: [
{
key: 'sd-hls-fmp4',
container: 'fmp4',
elementaryStreams: ['video-stream0'],
},
{
key: 'audio-hls-fmp4',
container: 'fmp4',
elementaryStreams: ['audio-stream0'],
},
{
key: 'text-vtt-en',
container: 'vtt',
elementaryStreams: ['vtt-stream-en'],
segmentSettings: {
segmentDuration: {
seconds: 6,
},
individualSegments: true,
},
},
{
key: 'text-vtt-es',
container: 'vtt',
elementaryStreams: ['vtt-stream-es'],
segmentSettings: {
segmentDuration: {
seconds: 6,
},
individualSegments: true,
},
},
],
manifests: [
{
fileName: 'manifest.m3u8',
type: 'HLS',
muxStreams: [
'sd-hls-fmp4',
'audio-hls-fmp4',
'text-vtt-en',
'text-vtt-es',
],
},
],
},
},
};
// Run request
const [response] = await transcoderServiceClient.createJob(request);
console.log(`Job: ${response.name}`);
}
createJobWithStandaloneCaptions();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_standalone_captions(
project_id: str,
location: str,
input_video_uri: str,
input_subtitles1_uri: str,
input_subtitles2_uri: str,
output_uri: str,
) -> transcoder_v1.types.resources.Job:
"""Creates a job based on an ad-hoc job configuration that can use subtitles from a standalone file.
Args:
project_id (str): The GCP project ID.
location (str): The location to start the job in.
input_video_uri (str): Uri of the input video in the Cloud Storage
bucket.
input_subtitles1_uri (str): Uri of an input subtitles file in the Cloud
Storage bucket.
input_subtitles2_uri (str): Uri of an input subtitles file in the Cloud
Storage bucket.
output_uri (str): 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.output_uri = output_uri
job.config = transcoder_v1.types.JobConfig(
inputs=[
transcoder_v1.types.Input(
key="input0",
uri=input_video_uri,
),
transcoder_v1.types.Input(
key="subtitle-input-en",
uri=input_subtitles1_uri,
),
transcoder_v1.types.Input(
key="subtitle-input-es",
uri=input_subtitles2_uri,
),
],
edit_list=[
transcoder_v1.types.EditAtom(
key="atom0",
inputs=["input0", "subtitle-input-en", "subtitle-input-es"],
),
],
elementary_streams=[
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,
),
),
),
transcoder_v1.types.ElementaryStream(
key="audio-stream0",
audio_stream=transcoder_v1.types.AudioStream(
codec="aac",
bitrate_bps=64000,
),
),
transcoder_v1.types.ElementaryStream(
key="vtt-stream-en",
text_stream=transcoder_v1.types.TextStream(
codec="webvtt",
language_code="en-US",
display_name="English",
mapping_=[
transcoder_v1.types.TextStream.TextMapping(
atom_key="atom0",
input_key="subtitle-input-en",
),
],
),
),
transcoder_v1.types.ElementaryStream(
key="vtt-stream-es",
text_stream=transcoder_v1.types.TextStream(
codec="webvtt",
language_code="es-ES",
display_name="Spanish",
mapping_=[
transcoder_v1.types.TextStream.TextMapping(
atom_key="atom0",
input_key="subtitle-input-es",
),
],
),
),
],
mux_streams=[
transcoder_v1.types.MuxStream(
key="sd-hls-fmp4",
container="fmp4",
elementary_streams=["video-stream0"],
),
transcoder_v1.types.MuxStream(
key="audio-hls-fmp4",
container="fmp4",
elementary_streams=["audio-stream0"],
),
transcoder_v1.types.MuxStream(
key="text-vtt-en",
container="vtt",
elementary_streams=["vtt-stream-en"],
segment_settings=transcoder_v1.types.SegmentSettings(
segment_duration=duration.Duration(
seconds=6,
),
individual_segments=True,
),
),
transcoder_v1.types.MuxStream(
key="text-vtt-es",
container="vtt",
elementary_streams=["vtt-stream-es"],
segment_settings=transcoder_v1.types.SegmentSettings(
segment_duration=duration.Duration(
seconds=6,
),
individual_segments=True,
),
),
],
manifests=[
transcoder_v1.types.Manifest(
file_name="manifest.m3u8",
type_="HLS",
mux_streams=[
"sd-hls-fmp4",
"audio-hls-fmp4",
"text-vtt-en",
"text-vtt-es",
],
),
],
)
response = client.create_job(parent=parent, job=job)
print(f"Job: {response.name}")
return response
Langkah selanjutnya
Untuk menelusuri dan memfilter contoh kode untuk produk Google Cloud lainnya, lihat browser contoh Google Cloud.