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- Documentation
Torch Object StorageSDK ReferenceJavaData ProcessingVideo ProcessingCreate video transcoding task (Java SDK)
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Create video transcoding task (Java SDK)
Copy pageDownload PDFCreate video transcoding task (Java SDK)
This article describes how to create a video transcoding task using the TOS Java SDK.
Notes
Only Java SDK version 2.9.8 and above support creating video transcoding tasks.
Code examples
Create a video transcoding task by template ID
package org.example.CreateVideoConvertJob;
// Create video transcoding task based on template ID
import com.volcengine.tos.TOSV2;
import com.volcengine.tos.TOSV2ClientBuilder;
import com.volcengine.tos.TosClientException;
import com.volcengine.tos.TosServerException;
import com.volcengine.tos.comm.common.*;
import com.volcengine.tos.model.bucket.*;
import com.volcengine.tos.model.object.*;
public class CreateVideoConvertJobExample {
public static void main(String[] args) {
String endpoint = System.getenv("TOS_ENDPOINT");
String region = System.getenv("TOS_REGION");
String accessKey = System.getenv("TOS_ACCESS_KEY");
String secretKey = System.getenv("TOS_SECRET_KEY");
// Provide your bucket name
String bucketName = System.getenv("TOS_BUCKET");
// Template ID
String templateId = "3633373966613563353858a1015403c6e03f";
// Initialize the client
TOSV2 tos = new TOSV2ClientBuilder().build(region, endpoint, accessKey, secretKey);
try {
// 1. Set corresponding parameters based on the case type (trigger transcoding through template ID)
// Source object key (placeholder, replace with the actual video object)
String sourceObjectKey = "example-input.mp4";
ConvertJobInput jobInput = ConvertJobInput.builder()
.object(sourceObjectKey)
.build();
// Target output (write the transcoded result into the specified object within the same bucket)
ConvertJobOutput jobOutput = ConvertJobOutput.builder()
.region(region) // Output region: use the current region
.bucket(bucketName) // Output bucket: the same as the input bucket, or configure to another bucket
.object("example-output.mp4") // Output object key (placeholder)
.build();
// Construct transcoding configuration using the template ID; Transcode can be an empty object
TranscodeConfig transcodeConfig = TranscodeConfig.builder()
.templateID(templateId) // Reference the created video transcoding template ID
.transcode(new Transcode()) // Transcode through the template without additional detailed settings
.build();
// 2. Call the corresponding API function
CreateVideoConvertJobInput input = CreateVideoConvertJobInput.builder()
.bucket(bucketName)
.input(jobInput)
.output(jobOutput)
.transcodeConfig(transcodeConfig)
.build();
CreateVideoConvertJobOutput output = tos.createVideoConvertJob(input);
// 3. Handle the returned result
System.out.println("Video transcoding task created successfully");
System.out.println("RequestID: " + output.getRequestInfo().getRequestId());
System.out.println("StatusCode: " + output.getRequestInfo().getStatusCode());
System.out.println("JobID: " + output.getJobId());
// 4. Add appropriate comments: this case creates a task using the template ID, suitable for reusing a unified transcoding policy
} catch (TosClientException e) {
// Operation failed, caught client exception, usually due to invalid request parameters; the request was not sent
System.out.println("Operation failed");
System.out.println("Message: " + e.getMessage());
if (e.getCause() != null) {
e.getCause().printStackTrace();
}
} catch (TosServerException e) {
// Operation failed, caught server exception, detailed error information can be obtained from the server response
System.out.println("Operation failed");
System.out.println("StatusCode: " + e.getStatusCode());
System.out.println("Code: " + e.getCode());
System.out.println("Message: " + e.getMessage());
System.out.println("RequestID: " + e.getRequestID());
} catch (Throwable t) {
// Fallback to catch other exceptions; this block rarely executes
System.out.println("Operation failed");
System.out.println("unexpected exception, message: " + t.getMessage());
}
}
}
Create a video transcoding task by parameter configuration
package org.example.CreateVideoConvertJob;
// Create video transcode tasks based on parameter settings
import com.volcengine.tos.TOSV2;
import com.volcengine.tos.TOSV2ClientBuilder;
import com.volcengine.tos.TosClientException;
import com.volcengine.tos.TosServerException;
import com.volcengine.tos.comm.common.*;
import com.volcengine.tos.model.bucket.*;
import com.volcengine.tos.model.object.*;
public class CreateVideoConvertJobExample2 {
public static void main(String[] args) {
String endpoint = System.getenv("TOS_ENDPOINT");
String region = System.getenv("TOS_REGION");
String accessKey = System.getenv("TOS_ACCESS_KEY");
String secretKey = System.getenv("TOS_SECRET_KEY");
// Provide your bucket name
String bucketName = System.getenv("TOS_BUCKET");
// Initialize the client
TOSV2 tos = new TOSV2ClientBuilder().build(region, endpoint, accessKey, secretKey);
try {
// 1. Set parameters according to the case type (directly configure video and audio transcoding parameters)
// Container format: MP4
Container container = Container.builder()
.format(ContainerFormatType.MP4)
.build();
// Video parameters: encoding h264, resolution 1280x720, CRF=23, pixel format yuv420p, bitrate 2Mbps, frame rate 30fps
Video video = Video.builder()
.codec("h264")
.width(1280)
.height(720)
.crf(23)
.pixFmt("yuv420p")
.bitRate(2_000_000)
.fps(30)
.remove(false)
.build();
// Audio parameters: encoding aac, bitrate 128Kbps, sample rate 44100Hz, stereo
Audio audio = Audio.builder()
.codec("aac")
.bitRate(128_000)
.sampleFormat("fltp")
.sampleRate(44_100)
.channels(2)
.remove(false)
.build();
// Transcoding time range (example: start at 0 ms, duration 10 seconds)
TimeInterval timeInterval = TimeInterval.builder()
.start(0)
.duration(10_000)
.build();
// Summarize transcoding configuration
Transcode transcode = Transcode.builder()
.timeInterval(timeInterval)
.container(container)
.video(video)
.audio(audio)
.build();
TranscodeConfig transcodeConfig = TranscodeConfig.builder()
.transcode(transcode)
.build();
// Source object and target output
ConvertJobInput jobInput = ConvertJobInput.builder()
.object("example-input.mp4")
.build();
ConvertJobOutput jobOutput = ConvertJobOutput.builder()
.region(region)
.bucket(bucketName)
.object("example-output.mp4")
.build();
// 2. Call the corresponding API function
CreateVideoConvertJobInput input = CreateVideoConvertJobInput.builder()
.bucket(bucketName)
.input(jobInput)
.output(jobOutput)
.transcodeConfig(transcodeConfig)
.callback("http://example.com/callback")
.build();
CreateVideoConvertJobOutput output = tos.createVideoConvertJob(input);
// 3. Process the returned results
System.out.println("Video transcoding task created successfully");
System.out.println("RequestID: " + output.getRequestInfo().getRequestId());
System.out.println("StatusCode: " + output.getRequestInfo().getStatusCode());
System.out.println("JobID: " + output.getJobId());
} catch (TosClientException e) {
# The operation failed and a client exception was caught. This is usually due to invalid request parameters or a network exception. The request was not sent in this case.
System.out.println("Operation failed");
System.out.println("Message: " + e.getMessage());
if (e.getCause() != null) {
e.getCause().printStackTrace();
}
} catch (TosServerException e) {
# The operation failed and a server exception occurred. See the response for the error details.
System.out.println("Operation failed");
System.out.println("StatusCode: " + e.getStatusCode());
System.out.println("Code: " + e.getCode());
System.out.println("Message: " + e.getMessage());
System.out.println("RequestID: " + e.getRequestID());
} catch (Throwable t) {
// Catch all other exceptions as a fallback, generally this code does not execute
System.out.println("Operation failed");
System.out.println("Unexpected exception, message: " + t.getMessage());
}
}
}
Callback request details
When the Callback field is set, the system sends a callback request to the Callback URL after the task completes successfully:
Post <callback_url_path> HTTP/1.1
Host: <callback_url_host>
{
"JobID": "fa81ef2a00a2211f08a9aa5fa72ccf57a", // task ID
"CreateTime": "2025-03-26T17:14:01+0800", // task creation time, RFC 3339 format
"StartTime": "2025-03-26T17:14:02+0800", // task execution time, RFC 3339 format
"EndTime": "2025-03-26T17:14:02+0800", // task completion time, RFC 3339 format
"Callback": "https://myapp.com/callback", // callback URL
"State": "Success", // task status, values: Success/Failed
"Code": 0, // task status code
"Message": "success", // task status message
"Input" : { // source file
"Object" : "sample.mp4"
},
"TranscodeConfig": { // transcoding parameters used when issuing the task
"Transcode": {
"TimeInterval": {
"Start": 0,
"Duration": 10000
},
"Container": {
"Format": "mp4"
},
"Video": {
"Codec": "h264",
"Width": 480,
"Height": 480,
"Crf": 1,
"PixFmt": "yuv420p"
}
},
},
"Output" : { // output file
"Region" : "cn-beijing",
"Bucket" : "testbkt",
"Object" : "output.mp4"
}
}
Related documentation
Last updated: 2026.04.17 16:59:16
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