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Video on Demand

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Video on Demand API 2024-07-18
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Glossary

Accelerated Delivery and Playback

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Last updated: 2024-10-16 16:13:27

Overview

VOD has over 2,800 CDN cache nodes around the globe to enable global users to access nearby nodes to get the media content they want. This makes downloading media content faster and smoother by avoiding problems such as network instability and high access delay due to cross-ISP, cross-region, and cross-border communication. VOD provides a built-in default domain name. If you do not have a domain name, the default domain name can be used to deliver resources from a nearby region. In addition, VOD also supports custom domain name management, purge and prefetch, and CDN usage statistics.
Feature
Description
Domain name management
Supports the use of Tencent Cloud domain names or custom playback domain names.
Supports configuring different hotlink protection and distribution rules for different playback domain names.
Purge and prefetch
Supports purging CDN cache for a specific media asset identified by VOD ID or URL. When you perform a cache purge on a resource, the system will delete the existing cache of the resource from all CDN nodes. When a user request arrives at a node, the node will pull the resource from the origin, return the requested resource, and cache the resource. This ensures that the user gets the latest resource.
Supports prefetching a media asset identified by VOD ID or URL. When a resource is prefetched, it will be cached in advance to all CDN nodes. When a user request arrives at a node, the resource can be directly obtained from the node, which shortens the response time.
CDN usage statistics
Provides statistics for CDN, allowing you to keep track of traffic, bandwidth, and clicks by time, region, and ISP.
Provides statistics for media files, including playback count and playback traffic for each file.
Provides CDN access logs for the connected domain name.

Use cases

The accelerated delivery and playback feature of VOD is suitable for almost all online scenarios in which images or audio/video content need to be displayed, such as social media, ecommerce, video platforms, news websites, and forums. The globally deployed CDN cache nodes enable VOD to deliver a high-quality media content access service even in a complicated network environment.
Scenario
Description
Social media platforms
Users may be located in different regions or countries and use different ISPs with different levels of network quality. CDN uses various optimization policies such as dynamic acceleration policies to automatically find and apply the optimal linkage for users during video playback, so as to deliver a smooth playback experience.
Ecommerce platforms
Merchants upload images, audio, and videos for their products, and customers upload images, audio, and videos for product reviews. Resource delivery is accelerated through CDN to enable ultra-fast loading of images, audio, and videos, significantly improving the user access and shopping experience.
Video platforms
Video platforms contain many long videos, which have a large file size and high requirements for the network stability. Video playback based on CDN allows users to enjoy a stable and smooth viewing experience even under poor network conditions.
News websites
When breaking news occurs, there will be an immediate traffic surge. If large numbers of users access the origin server to view news content, the origin server may crash, and the website may lose the opportunity to attract viewers. The media content can be hosted in VOD and pushed to global cache nodes through CDN, so that users can get the media content quickly and reliably.

Learn More

For more information on domain name management, see the following:
For more information on purge and prefetch, see:
For more information on usage statistics analysis, see:

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