向媒体库中新增媒体文件时，可以指定工作流ID触发工作流执行，对新增的媒体文件进行媒体处理。本文介绍通过Python SDK新增媒体并触发工作流执行的示例代码。
说明
如果上传的目录满足工作流触发条件，则会触发工作流执行，否则不触发。更多信息，请参见工作流的文件匹配规则。
import os
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.AddMediaRequest import AddMediaRequest
# 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://www.alibabacloud.com/help/zh/apsaravideo-for-media-processing/latest/service-regions
client = AcsClient(region_id = 'cn-shanghai', credential = credentials)
bucket_name = '<your bucket name>'
# 文件object需要进行url编码
oss_object = 'mps-test/input/video.mp4'
request = AddMediaRequest()
request.set_FileURL("http://" + bucket_name + ".oss-cn-shanghai.aliyuncs.com/" + quote(oss_object))
request.set_MediaWorkflowId("829be1a2c3de957e341****")
response = client.do_action_with_exception(request)
# 输出打印
print(str(response, encoding='utf-8'))