Tencent Video Cloud: Enabling Real‑Time Audio/Video in WeChat Mini‑Programs

On December 15, Tencent Cloud hosted its first "Tencent Cloud+ Community Developer Conference" in Beijing, gathering more than 40 technical experts to discuss the latest trends in AI, big data, IoT, mini‑programs, and cloud services.

The session introduced Tencent Video Cloud , a PaaS solution that provides audio‑video capabilities such as live streaming, on‑demand video, and video calls for B‑class customers. It does not offer database, storage, or networking services, but focuses solely on real‑time media.

The presentation was divided into four parts: (1) practical scenarios for mini‑program audio‑video, (2) the underlying technical implementation, (3) detailed audio‑video technology, and (4) compliance and review procedures.

Use‑case examples included insurance claim processing via video, remote vehicle inspection for a major insurer, a virtual showroom for BMW that lets customers view car interiors in high‑definition, remote court hearings, tele‑medicine, and other enterprise scenarios. The speaker emphasized that video adds visual context that voice alone cannot provide and eliminates the need to develop separate native apps.

From a technical perspective, the Video Cloud SDK is embedded into the WeChat mini‑program and exposes two custom tags: <live-pusher> for upstream (uploading local video/audio to the server) and <live-player> for downstream (playing server‑side streams). These tags are bridged to native code via the mini‑program JSBridge, enabling live streaming through edge nodes, transcoding clusters, and CDN delivery.

To achieve low latency, the architecture adds accelerated nodes that use UDP and dedicated links, reducing end‑to‑end delay to under 500 ms. This supports two‑way video calls and multi‑stream scenarios (up to eight simultaneous small windows on a mobile device). The solution also integrates open‑source WebRTC components, allowing the same streams to be accessed from Chrome browsers on PCs, which is valuable for enterprise customer‑service workflows.

Backend considerations include a queuing system for customer‑service agents, integration with cloud development services for medical record handling, and AI‑assisted quality monitoring. Recent updates have significantly reduced video stutter, and both AI and manual review teams provide 24/7 compliance checks for content that must meet regulatory requirements.

The Q&A covered topics such as the availability of live‑streaming plugins for new‑retail, eligibility for small companies, compliance documentation, multi‑party call support (up to 6‑7 video streams), and upcoming entry points on the Tencent Cloud website.