Live streaming is an application extremely sensitive to network quality. Unlike web browsing or file downloads, live streaming is a continuous, one-directional upstream data flow — any interruption or fluctuation immediately causes buffering, artifacts, or black screens for viewers. For streaming from mainland China to overseas platforms, public internet quality simply cannot meet professional streaming demands.
Technical Requirements for Live Streaming
Understanding streaming network requirements starts with understanding the technical principles. Using OBS Studio (the most popular open-source streaming software) as an example:
Bitrate: The most critical parameter. A 1080p 30fps stream typically requires 4,000-6,000 Kbps upload bitrate; for 1080p 60fps or 4K, this can be 8,000-20,000 Kbps. Adding audio bitrate (typically 128-320 Kbps), a single HD stream needs at least 5-8 Mbps of stable upload bandwidth.
Stability: The keyword is "stable," not just "sufficient." Even if your line averages 50Mbps, bandwidth dips of 500ms every few minutes cause the encoder to buffer frames, resulting in viewer-side stutter. RTMP (the dominant streaming protocol) uses TCP, so packet loss triggers retransmission, further compounding latency.
Latency: Streaming latency affects host-viewer interaction quality. When viewers send comments, the time for the host to see and respond depends on end-to-end latency. Public internet cross-border latency is typically 150-400ms, while IPLC dedicated lines compress this to 30-100ms (depending on physical distance). For commerce livestreams and interactive gaming streams, this difference directly impacts user experience and conversion rates.
Jitter: Jitter measures latency variation between consecutive packets. Streaming typically requires jitter below 30ms. Cross-border public internet jitter can reach 50-200ms, directly causing stuttering and audio-video desynchronization.
Common Public Internet Streaming Issues
When streaming from mainland China to overseas platforms, data must traverse international gateways. Public internet international bandwidth is shared, with these problems:
Evening Peak Congestion: 8-11 PM daily is peak international bandwidth usage (coinciding with prime streaming hours). Massive simultaneous usage causes severe packet loss and latency spikes. Many streamers report "everything's fine during daytime testing, but laggy during evening streams" — this is the root cause.
Uncontrollable Routing: Public internet packet routing is determined by carrier BGP policies. Shanghai-to-Tokyo packets might route through Guangzhou, then Hong Kong, then Tokyo — adding unnecessary latency and packet loss risk. Routes can change at any time, causing quality fluctuations.
No QoS Guarantees: All public internet traffic competes equally for bandwidth (best-effort). Your streaming packets compete with everyone else's video downloads, gaming traffic, and P2P traffic with no priority guarantees.
How IPLC/IEPL Ensures Streaming Quality
Dedicated lines address these issues across several dimensions:
Dedicated Bandwidth: Dedicated line bandwidth is exclusively yours. A 10Mbps line means 10Mbps upload available at all times, regardless of other users. This supports two simultaneous 1080p HD streams.
Fixed Routing: Dedicated line routing is fixed — following predefined fiber paths from origin to destination, unaffected by BGP route changes. This ensures consistent latency.
SLA Guarantees: Dedicated lines typically offer 99.5%+ availability SLA with explicit commitments on latency, jitter, and packet loss ceilings, backed by commercial compensation mechanisms.
Bypassing International Gateways: IPLC/IEPL doesn't use public internet international exits but connects both ends directly through carrier-dedicated fiber or submarine cables, completely avoiding gateway congestion.
Platform-Specific Requirements and Recommendations
Facebook Live: Supports RTMP push at recommended 4,000 Kbps (1080p). Facebook's CDN edge nodes are widely distributed, but connection quality from the push end to Facebook's ingest server is critical. Choose the nearest ingest server (typically Singapore or Tokyo) and ensure upload quality through dedicated lines.
TikTok Live: TikTok's streaming pipeline is relatively closed, with mobile direct streaming. For OBS-based scenarios (PC streaming), stable networking is essential. TikTok's ingest servers are primarily in Southeast Asia and the US — recommend Hong Kong or Singapore exits from mainland China.
Twitch: Twitch ingest servers are globally distributed, recommending 6,000 Kbps (1080p 60fps). Twitch has the highest network quality requirements since gaming streams have rapid visual changes, and low bitrates cause severe compression artifacts. Recommend using Tokyo nodes.
YouTube Live: Supports high bitrate streaming (up to 51,000 Kbps for 4K) with some tolerance for network interruptions (auto-downgrades quality rather than disconnecting). But frequent quality degradation impacts viewing experience and algorithm recommendations.
Bandwidth Planning Guide
When planning dedicated line bandwidth for streaming, use this formula:
Required Bandwidth = Video Bitrate × Concurrent Streams × 1.3 (overhead factor)
For example, a team streaming 3 concurrent 1080p feeds at 5Mbps each: 5 × 3 × 1.3 = 19.5Mbps, suggesting a 20Mbps dedicated line.
The 1.3 overhead factor accounts for TCP protocol overhead, occasional retransmission, and OBS bitrate fluctuation (even with constant bitrate settings, actual output varies by ±10%).
Areapac offers IPLC/IEPL dedicated lines from 5Mbps to 1Gbps with monthly bandwidth adjustments. For streaming clients, we recommend optimal exit nodes and bandwidth configurations based on streaming platforms and target audience geography. Shanghai-to-Tokyo latency of 26ms already meets most interactive streaming needs for Japanese and Southeast Asian audiences.