媒体处理如何使用PythonSDK创建HLS标准加密工作流

视频加密旨在通过对视频内容进行深度安全处理，确保视频数据不被非法获取和传播，可有效防止视频泄露和盗链问题，广泛用于在线教育及财经等对内容安全性要求高的领域。本文提供Python SDK创建HLS标准加密工作流相关功能的示例代码。

简介

示例调用API，创建HLS标准加密工作流。创建HLS标准加密工作流到播放加密视频的完整步骤，参见HLS的加密与播放。MPS SDK，详情参见安装。

示例代码

import os
import json

from urllib.parse import quote
from aliyunsdkcore.client import AcsClient
from aliyunsdkcore.acs_exception.exceptions import ClientException
from aliyunsdkcore.acs_exception.exceptions import ServerException
from aliyunsdkcore.auth.credentials import AccessKeyCredential
from aliyunsdkmts.request.v20140618.AddMediaWorkflowRequest import AddMediaWorkflowRequest

# 读取环境变量中设置的ACCESS_KEY   ACCESS_KEY_SECRET信息
credentials = AccessKeyCredential(os.environ['ALIBABA_CLOUD_ACCESS_KEY_ID'], os.environ['ALIBABA_CLOUD_ACCESS_KEY_SECRET'])
# region_id 为调用的服务地域ID，支持的地域参考 https://help.aliyun.com/document_detail/43248.html
client = AcsClient(region_id = 'cn-shanghai', credential = credentials)

request = AddMediaWorkflowRequest()
request.set_Name("hls-transcode-workflow")

startActivity = {
    "Type": "Start",
    "Parameters": {
        "InputFile": {
            "Bucket": "<your input bucket>",
            "Location": "oss-cn-shanghai",
            "ObjectPrefix": "media/"
        },
        "PipelineId": "<PipelineId>"
    }
}

transcodeActivity = {
    "Type": "Transcode",
    "Parameters": {
        "Outputs": [
            {
                "OutputObject": quote("transcode/{ObjectPrefix}/{FileName}.{ExtName}"),
                "TemplateId": "<hls TemplateId>",
                "Encryption": {
                    "Type": "hls-aes-128",
                    "KeyUri": "<解密密钥的URI #如http://example.aliyundoc.com>"
                }
            }
        ],
        "OutputLocation": "oss-cn-shanghai",
        "OutputBucket": "<your output bucket>"
    }
}

reportActivity = {
    "Type": "Report",
    "Parameters": {
    }
}
topology = {
    "Activities": {
        "Act-Start": startActivity,
        "transcodingNode": transcodeActivity,
        "reportNode": reportActivity
    },
    "Dependencies": {
        "Act-Start": ["transcodingNode"],
        "transcodingNode": ["reportNode"],
        "reportNode": []
    }
}

request.set_Topology(topology)

response = client.do_action_with_exception(request)
# 输出打印
print(str(response, encoding='utf-8'))