Erstellen Sie einen Transcodierungsjob, bei dem Untertitel in das Ausgabevideo eingebettet sind. Untertitel können sowohl Untertitel als auch Untertitel enthalten.
Weitere Informationen
Eine ausführliche Dokumentation, die dieses Codebeispiel enthält, finden Sie hier:
Codebeispiel
Go
Folgen Sie der Einrichtungsanleitung für Go in der Transcoder API-Kurzanleitung zur Verwendung von Clientbibliotheken, bevor Sie dieses Beispiel ausprobieren. Weitere Informationen finden Sie in der Go API-Referenzdokumentation zur Transcoder API.
Richten Sie Standardanmeldedaten für Anwendungen ein, um sich bei der Transcoder API zu authentifizieren. Weitere Informationen finden Sie unter Authentifizierung für eine lokale Entwicklungsumgebung einrichten.
import (
"context"
"fmt"
"io"
transcoder "cloud.google.com/go/video/transcoder/apiv1"
"cloud.google.com/go/video/transcoder/apiv1/transcoderpb"
)
// createJobWithEmbeddedCaptions creates a job that embeds closed captions in the
// output video. See https://cloud.google.com/transcoder/docs/how-to/captions-and-subtitles
// for more information.
func createJobWithEmbeddedCaptions(w io.Writer, projectID string, location string, inputVideoURI string, inputCaptionsURI string, outputURI string) error {
// projectID := "my-project-id"
// location := "us-central1"
// inputVideoURI := "gs://my-bucket/my-video-file"
// inputCaptionsURI := "gs://my-bucket/my-captions-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()
// 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: "cea_stream0",
ElementaryStream: &transcoderpb.ElementaryStream_TextStream{
TextStream: &transcoderpb.TextStream{
Codec: "cea608",
Mapping: []*transcoderpb.TextStream_TextMapping{
{
AtomKey: "atom0",
InputKey: "caption_input0",
InputTrack: 0,
},
},
LanguageCode: "en-US",
DisplayName: "English",
},
},
},
}
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: "caption_input0",
Uri: inputCaptionsURI,
},
},
EditList: []*transcoderpb.EditAtom{
{
Key: "atom0",
Inputs: []string{"input0", "caption_input0"},
},
},
ElementaryStreams: elementaryStreams,
MuxStreams: []*transcoderpb.MuxStream{
{
Key: "sd-hls",
Container: "ts",
ElementaryStreams: []string{"video_stream0", "audio_stream0"},
},
{
Key: "sd-dash",
Container: "fmp4",
ElementaryStreams: []string{"video_stream0"},
},
{
Key: "audio-dash",
Container: "fmp4",
ElementaryStreams: []string{"audio_stream0"},
},
},
Manifests: []*transcoderpb.Manifest{
{
FileName: "manifest.m3u8",
Type: transcoderpb.Manifest_HLS,
MuxStreams: []string{"sd-hls"},
},
{
FileName: "manifest.mpd",
Type: transcoderpb.Manifest_DASH,
MuxStreams: []string{"sd-dash", "audio-dash"},
},
},
},
},
},
}
// 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
Folgen Sie der Einrichtungsanleitung für Java in der Transcoder API-Kurzanleitung zur Verwendung von Clientbibliotheken, bevor Sie dieses Beispiel ausprobieren. Weitere Informationen finden Sie in der Java API-Referenzdokumentation zur Transcoder API.
Richten Sie Standardanmeldedaten für Anwendungen ein, um sich bei der Transcoder API zu authentifizieren. Weitere Informationen finden Sie unter Authentifizierung für eine lokale Entwicklungsumgebung einrichten.
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.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 java.io.IOException;
public class CreateJobWithEmbeddedCaptions {
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/";
createJobWithEmbeddedCaptions(projectId, location, inputVideoUri, inputCaptionsUri, outputUri);
}
// Creates a job from an ad-hoc configuration that embeds captions in the output video.
public static void createJobWithEmbeddedCaptions(
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("cea608")
.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("cea_stream0").setTextStream(textStream0))
.addMuxStreams(
0,
MuxStream.newBuilder()
.setKey("sd")
.setContainer("mp4")
.addElementaryStreams("video_stream0")
.addElementaryStreams("audio_stream0")
.build())
.addMuxStreams(
1,
MuxStream.newBuilder()
.setKey("sd_hls")
.setContainer("ts")
.addElementaryStreams("video_stream0")
.addElementaryStreams("audio_stream0")
.build())
.addMuxStreams(
2,
MuxStream.newBuilder()
.setKey("sd_dash")
.setContainer("fmp4")
.addElementaryStreams("video_stream0")
.build())
.addMuxStreams(
3,
MuxStream.newBuilder()
.setKey("audio_dash")
.setContainer("fmp4")
.addElementaryStreams("audio_stream0")
.build())
.addManifests(
0,
Manifest.newBuilder()
.setFileName("manifest.m3u8")
.setType(ManifestType.HLS)
.addMuxStreams("sd_hls")
.build())
.addManifests(
1,
Manifest.newBuilder()
.setFileName("manifest.mpd")
.setType(ManifestType.DASH)
.addMuxStreams("sd_dash")
.addMuxStreams("audio_dash")
.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
Folgen Sie der Einrichtungsanleitung für Node.js in der Transcoder API-Kurzanleitung zur Verwendung von Clientbibliotheken, bevor Sie dieses Beispiel ausprobieren. Weitere Informationen finden Sie in der Node.js API-Referenzdokumentation zur Transcoder API.
Richten Sie Standardanmeldedaten für Anwendungen ein, um sich bei der Transcoder API zu authentifizieren. Weitere Informationen finden Sie unter Authentifizierung für eine lokale Entwicklungsumgebung einrichten.
/**
* TODO(developer): Uncomment these variables before running the sample.
*/
// projectId = 'my-project-id';
// location = 'us-central1';
// inputVideoUri = 'gs://my-bucket/my-video-file';
// inputCaptionsUri = 'gs://my-bucket/my-captions-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 createJobWithEmbeddedCaptions() {
// Construct request
const request = {
parent: transcoderServiceClient.locationPath(projectId, location),
job: {
outputUri: outputUri,
config: {
inputs: [
{
key: 'input0',
uri: inputVideoUri,
},
{
key: 'caption_input0',
uri: inputCaptionsUri,
},
],
editList: [
{
key: 'atom0',
inputs: ['input0', 'caption_input0'],
},
],
elementaryStreams: [
{
key: 'video-stream0',
videoStream: {
h264: {
heightPixels: 360,
widthPixels: 640,
bitrateBps: 550000,
frameRate: 60,
},
},
},
{
key: 'audio-stream0',
audioStream: {
codec: 'aac',
bitrateBps: 64000,
},
},
{
key: 'cea-stream0',
textStream: {
codec: 'cea608',
mapping: [
{
atomKey: 'atom0',
inputKey: 'caption_input0',
inputTrack: 0,
},
],
languageCode: 'en-US',
displayName: 'English',
},
},
],
muxStreams: [
{
key: 'sd-hls',
container: 'ts',
elementaryStreams: ['video-stream0', 'audio-stream0'],
},
{
key: 'sd-dash',
container: 'fmp4',
elementaryStreams: ['video-stream0'],
},
{
key: 'audio-dash',
container: 'fmp4',
elementaryStreams: ['audio-stream0'],
},
],
manifests: [
{
fileName: 'manifest.m3u8',
type: 'HLS',
muxStreams: ['sd-hls'],
},
{
fileName: 'manifest.mpd',
type: 'DASH',
muxStreams: ['sd-dash', 'audio-dash'],
},
],
},
},
};
// Run request
const [response] = await transcoderServiceClient.createJob(request);
console.log(`Job: ${response.name}`);
}
createJobWithEmbeddedCaptions();Python
Folgen Sie der Einrichtungsanleitung für Python in der Transcoder API-Kurzanleitung zur Verwendung von Clientbibliotheken, bevor Sie dieses Beispiel ausprobieren. Weitere Informationen finden Sie in der Python API-Referenzdokumentation zur Transcoder API.
Richten Sie Standardanmeldedaten für Anwendungen ein, um sich bei der Transcoder API zu authentifizieren. Weitere Informationen finden Sie unter Authentifizierung für eine lokale Entwicklungsumgebung einrichten.
import argparse
from google.cloud.video import transcoder_v1
from google.cloud.video.transcoder_v1.services.transcoder_service import (
TranscoderServiceClient,
)
def create_job_with_embedded_captions(
project_id: str,
location: str,
input_video_uri: str,
input_captions_uri: str,
output_uri: str,
) -> transcoder_v1.types.resources.Job:
"""Creates a job based on an ad-hoc job configuration that embeds closed captions in the output video.
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_captions_uri (str): Uri of the input captions 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="caption-input0",
uri=input_captions_uri,
),
],
edit_list=[
transcoder_v1.types.EditAtom(
key="atom0",
inputs=["input0", "caption-input0"],
),
],
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="cea-stream0",
text_stream=transcoder_v1.types.TextStream(
codec="cea608",
mapping_=[
transcoder_v1.types.TextStream.TextMapping(
atom_key="atom0",
input_key="caption-input0",
input_track=0,
),
],
language_code="en-US",
display_name="English",
),
),
],
mux_streams=[
transcoder_v1.types.MuxStream(
key="sd-hls",
container="ts",
elementary_streams=["video-stream0", "audio-stream0"],
),
transcoder_v1.types.MuxStream(
key="sd-dash",
container="fmp4",
elementary_streams=["video-stream0"],
),
transcoder_v1.types.MuxStream(
key="audio-dash",
container="fmp4",
elementary_streams=["audio-stream0"],
),
],
manifests=[
transcoder_v1.types.Manifest(
file_name="manifest.m3u8",
type_="HLS",
mux_streams=["sd-hls"],
),
transcoder_v1.types.Manifest(
file_name="manifest.mpd",
type_="DASH",
mux_streams=["sd-dash", "audio-dash"],
),
],
)
response = client.create_job(parent=parent, job=job)
print(f"Job: {response.name}")
return response
Nächste Schritte
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