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ApsaraVideo VOD:Data security

Last Updated:Jun 17, 2026

ApsaraVideo VOD provides data encryption, data isolation, and data leak prevention to help protect your data from security risks in the cloud.

Data encryption

Disk encryption after data writing

Secure download

You can download videos to your local device in secure download mode. Downloaded videos are encrypted by Alibaba Cloud and can be played only by using ApsaraVideo Player. You must use key files to decrypt the videos before playback. For more information, see Secure download.

Data transfer encryption

HLS encryption

HTTP Live Streaming (HLS) encryption uses AES-128 to encrypt video content and supports all HLS-compatible players. HLS encryption requires Key Management Service (KMS) and the token service. This method is widely used in fields that require high security, such as online education and TV shows. For more information, see HLS encryption.

Server-side encryption

Alibaba Cloud proprietary cryptography

Alibaba Cloud proprietary cryptography encrypts video data. Downloaded video files are encrypted to prevent unauthorized redistribution, video leakage, and hotlinking. Compared with HLS encryption, Alibaba Cloud proprietary cryptography is more secure and easier to use. For more information, see Alibaba Cloud proprietary cryptography.

Comprehensive encryption solution

Commercial DRM encryption

ApsaraVideo VOD offers industry-wide digital rights management (DRM) encryption. DRM encryption is powered by Apple FairPlay and Google Widevine. You can add and manage DRM certificates and enable DRM encryption in the ApsaraVideo VOD console to protect your copyrighted video content. For more information, see DRM encryption.

Data isolation

Region isolation

Media resources and configurations in ApsaraVideo VOD are region-bound. You cannot process media resources across regions. For example, if you activate ApsaraVideo VOD in the China (Shanghai) region, you cannot process media files stored in the China (Beijing) region.

Region isolation facilitates data storage and helps enterprises comply with local regulatory requirements, adapt to local culture, and retrieve data from the nearest data center or server. This reduces latency and improves user experience.

After you activate ApsaraVideo VOD, the system allocates a VOD bucket to each region. After you enable a VOD bucket in a region, you can upload and manage media resources in that region. For more information, see Manage storage buckets.

Application isolation

ApsaraVideo VOD provides the multi-application service. You can create multiple applications and isolate media data and configurations across different applications. This allows you to separate environments, business lines, and channels.

The multi-application service supports isolation only for media upload, audio and video playback, media management, and callbacks.

The multi-application service is available only to users in the whitelist. To use the multi-application service, submit a request on Yida. For more information, see Overview.

Data leak prevention

Image or text watermarks

You can add image or text watermarks to videos to assert video copyright, promote brands, or improve brand recognition. This also helps prevent data leakage. For more information, see Video watermark.