Common questions about activating Intelligent Media Services (IMS) and configuring permissions.
Table of contents
Are OSS and CDN activated by default when I activate Intelligent Media Services?
Why must I configure OSS CORS if I want to use Intelligent Media Services?
Why does the overview page show a permissions error when I log in to the console as a RAM user?
What media resource sources does Intelligent Media Services support?
FAQ
Are OSS and CDN activated by default when I activate Intelligent Media Services?
No. OSS and CDN are separate services that you activate as needed:
To upload media files from OSS to IMS or export IMS media to OSS, activate OSS and configure an access policy on it.
To distribute IMS media to end users via CDN, activate CDN.
What is the relationship between Intelligent Media Services and ApsaraVideo for VOD or Production Studio?
IMS provides a one-stop platform for collecting, managing, generating, and distributing media content across live streaming and VOD workflows. You can bring in resources from ApsaraVideo for VOD or Production Studio, then output them as OSS files, VOD media feeds, or live streams.
Why must I configure OSS CORS if I want to use Intelligent Media Services?
IMS requires cross-origin access to read media files stored in your OSS bucket. When you first use the console, it prompts you to authorize CORS configuration on OSS. Without this, the console cannot access your media files.
When accessing your OSS media files through methods other than the console — such as API operations or SDKs — configure CORS manually. For instructions, see Error adding a media asset to the timeline
Why does Intelligent Media Services display "You are unauthorized to perform this operation" when I use it as a RAM user?
The RAM user lacks the required IMS permissions. Use your Alibaba Cloud account to activate Intelligent Media Services and grant the AliyunICEFullAccess policy, which includes the following permissions:
{
"Statement":[
{
"Effect":"Allow",
"Action":"ice:*",
"Resource":"acs:ice:*:*:*"
}
],
"Version":"1"
}For authorization steps, see Create and authorize a RAM user.
Why does the system report a permissions error when I import OSS files to the media library as a RAM user?
The RAM user lacks OSS read permissions. Without at least AliyunOSSReadOnlyAccess, the OSS file list cannot load. Use your Alibaba Cloud account to grant this policy to the RAM user. For authorization steps, see Create and authorize a RAM user.
Why does the overview page show a permissions error when I log in to the console as a RAM user?
The overview page retrieves your purchased resource plans, which requires two permissions. Use your Alibaba Cloud account to grant the RAM user both AliyunBssReadOnly and AliyunICEReadOnlyAccess. Without both, the overview page cannot display. For authorization steps, see Create and authorize a RAM user.
What media resource sources does Intelligent Media Services support?
IMS supports three media resource sources:
Media files stored in OSS buckets
Media files from ApsaraVideo for VOD
Built-in public assets such as stickers, transition effects, and filters
To use media from OSS or ApsaraVideo for VOD, register the files in the IMS media library first.
Console uploads are registered automatically. For API uploads, call RegisterMediaInfo to register the files manually.
Does Intelligent Media Services support cross-region media resources stored in OSS and ApsaraVideo for VOD?
No.