How does a video CDN differ from a general CDN?
A general CDN mainly caches static web assets (images, JS, CSS). A video CDN adds optimisation for live signals and large video files: low-latency chunk handling, native multi-protocol support (HLS / MPEG-DASH / MSS / HDS), adaptive bitrate, signed URLs and anti-hotlinking, and real-time viewing analytics. If your business involves live or heavy on-demand video, a video CDN is the right choice.
Which live protocols and video formats does UD Video CDN support?
Live protocols: HLS, MPEG-DASH, MSS, HDS. On-demand files: MP4, M3U8, MOV, WebM, AVI, FLV. HLS and MPEG-DASH together cover about 85% of modern streaming, and UD Video CDN fully supports both.
How do I serve Hong Kong, Mainland, and global viewers at once?
Activate Hong Kong, China, and global region plans in one account; each viewer is routed to the matching nodes by origin. Smart CDN can also direct each region to the best line automatically.
Do I need ICP filing to serve Mainland viewers?
No. UD Video CDN uses China Telecom CN2 GIA lines to nodes around the Mainland, so you can serve Mainland viewers without an ICP filing.
How are large live events and high concurrency handled?
On event day, traffic is distributed automatically across edge nodes while the origin serves only cache fills. For very high concurrency, such as major matches or brand launches, let our sales team know in advance via the form above so we can reserve dedicated nodes and bandwidth.
How do I block hotlinking and restrict viewing regions?
Use signed URLs (token, issued by expiry and IP), anti-hotlinking (blocked by referer), and geo-restriction (allow or deny by country or region). Configure them in the console or the developer API.
How do I get started?
Log in to the UD CDN console, enter your video domain, verify ownership, set cache rules, and point it to UD CDN to go live. No change to your existing ingest server or on-demand storage, and it finishes within one business day.
What security is included?
All Video CDN traffic automatically masks the origin address, with free SSL certificates, a web application firewall, and DDoS protection built in, and no extra security modules to buy.
Is it suitable for OTT, online education, and live commerce?
Yes. UD Video CDN supports high-concurrency live (live commerce, sports), long-form on-demand (OTT, online education), and short-video push (social platforms).
How does Video CDN work with Dynamic CDN and Smart CDN?
Video CDN handles video (live and on-demand); Dynamic CDN handles API and WebSocket real-time data such as live chat and polls; Smart CDN handles cross-region routing. Run all three together for full coverage of a video business.