Detailed analysis of the calling logic of Java and Youpaiyun audio and video processing interfaces

Detailed explanation of the calling logic of Java and Youpaiyun audio and video processing interface

Youpaiyun is an enterprise-level cloud service provider that provides cloud storage and content distribution. In addition to providing basic cloud storage and CDN services, Youpaiyun also provides a rich audio and video processing interface to meet users' various needs in audio and video processing. This article will introduce in detail the calling logic of Java and Youpaiyun audio and video processing interface, and give relevant code examples.

1. Preparation before calling

First, we need to apply for a developer account on Youpaiyun official website, create an application, and obtain the API key and API key in the application .

Then, introduce the Java SDK provided by Youpaiyun into the Java project, and add the following dependencies in Maven:

<dependency>
    <groupId>com.upyun.cdnl</groupId>
    <artifactId>upyun-java-sdk</artifactId>
    <version>2.4.3</version>
</dependency>

Next, we can start calling Youpaiyun’s audio and video The interface is processed.

2. Upload files

First, we need to upload the audio and video files to be processed to the Youpai cloud server. This can be achieved using the upload interface provided by Youpai Cloud. The following is a simple code example for uploading files:

UpYun upyun = new UpYun("your_bucket", "your_operator", "your_password");
String filePath = "your_local_file_path";
String savePath = "your_remote_save_path";
boolean result = upyun.writeFile(savePath, new File(filePath), true);

In this example, we create an UpYun object and pass in the space name, operator name and operator password of Youpaiyun. Then, we specified the local file path and remote save path to be uploaded, and called the writeFile method to upload the file to the Youpai cloud server.

3. Audio and video processing

After the upload is completed, we can perform various processing operations on the audio and video files just uploaded.

1. Get audio and video information

To get detailed information of audio and video files, you can use the interface provided by Youpaiyun. The following is a code example for obtaining audio and video information:

String filePath = "your_remote_file_path";
String result = upyun.getMediaInfo(filePath);

In this code, we specify the path of the audio and video file to obtain information, and call the getMediaInfo method to obtain the detailed information of the audio and video file.

2. Transcoding

Transcoding is one of the common requirements for audio and video processing. Youpaiyun provides a series of transcoding interfaces that can transcode audio and video. The following is a simple audio and video transcoding code example:

String filePath = "your_remote_file_path";
String savePath = "your_remote_save_path";
String[] tasks = new String[]{"avthumb/mp4", "s/480p", "vf/vflip", "af/asetpts=PTS-STARTPTS"};
boolean result = upyun.avprocess(filePath, savePath, tasks);

In this example, we specify the path of the audio and video file to be transcoded and the path to save after transcoding, and pass in the transcoding task list. This task list contains multiple transcoding tasks, each task is represented by a string, and the format of the string is "task type/parameters". The task type can be "avthumb/mp4" means transcoding to MP4 format, "s/480p" means adjusting the video to 480p resolution, "vf/vflip" means flipping the video vertically, "af/asetpts=PTS- STARTPTS" means making adjustments to the audio.

3. Screenshots

Youpaiyun also provides a screenshot interface, which can take screenshots of audio and video files. The following is a simple code example for audio and video screenshots:

String filePath = "your_remote_file_path";
String savePath = "your_remote_save_path";
String[] tasks = new String[]{"vs/3", "ws/600", "ds/300"};
boolean result = upyun.avprocess(filePath, savePath, tasks);

In this example, we specify the path of the audio and video file to be screenshot and the path to save after taking the screenshot, and pass in the screenshot task list. This task list contains multiple tasks. For example, "vs/3" means to capture the video frame at the 3rd second, "ws/600" means to adjust the screenshot to a width of 600 pixels, and "ds/300" means to adjust the screenshot to a width of 600 pixels. 300 pixels height.

4. Processing result callback

Youpaiyun’s audio and video processing interface supports asynchronous processing. You can receive the processing results by setting the callback address when calling the processing interface.

The following is a code example for setting a callback for processing results:

String notifyUrl = "your_notify_url";
upyun.setTaskNotifyUrl(notifyUrl);

In this example, we set a callback address notifyUrl, and call the setTaskNotifyUrl method to set the callback address to notifyUrl.

5. Summary

Through the above code examples, we have a detailed understanding of the calling logic of Java and Youpaiyun audio and video processing interfaces. First, we need to introduce Youpaiyun's Java SDK and prepare the developer account and application API key. Then, we can perform audio and video processing operations such as file upload, obtaining audio and video information, transcoding, and screenshots, and receive the processing results by setting a callback address. I hope this article can help readers better understand the calling methods of Java and Youpaiyun audio and video processing interfaces, and apply them to actual projects.

The above is the detailed content of Detailed analysis of the calling logic of Java and Youpaiyun audio and video processing interfaces. For more information, please follow other related articles on the PHP Chinese website!