search

Popin HD Video Calling: Recommended Network Guidelines

hashtag
Overview

Popin provides real-time HD video calls powered by a scalable SFU (Selective Forwarding Unit) backend. It ensures smooth video, clear audio, and low latency through adaptive streaming, WebSocket-based signaling, and Protocol Buffers (Protobuf) data serialization.

This document outlines the recommended and minimum network requirements for achieving optimal video and audio quality.

hashtag
1. ⚡ Recommended Bandwidth

Quality

Upload Speed

Download Speed

Notes

HD Video (720p–1080p)

Minimum: 5 Mbps

Minimum: 5 Mbps

Functional, occasional quality drops may occur in weak networks

HD Video (720p–1080p)

Recommended: 8–10 Mbps

Recommended: 8–10 Mbps

Ensures stable, high-quality video and audio

hashtag
2. 🌐 Network Quality Guidelines

Parameter

Recommended

Latency

< 100 ms (ideal), up to 200 ms acceptable

Packet Loss

< 1% recommended, noticeable issues above 3%

Jitter

< 30 ms recommended

hashtag
3. ✅ Recommended

  • Minimum HD Video: 5 Mbps upload/download

  • Recommended HD Video: 8–10 Mbps upload/download

  • Network: Use wired or strong Wi-Fi connections

  • Device Optimization: Close unnecessary applications that use network bandwidth during calls

hashtag
4. 📊 Minimum Requirements

Resolution

Frame Rate (fps)

Minimum Bandwidth

540p

30 fps

800 kbps

720p

30 fps

1.7 Mbps

1080p

30 fps

3 Mbps

hashtag
5. 🎙️ Published Tracks and Media Configuration

Type

Media

Codec / Format

Resolution(s)

Microphone

audio/red

Audio Stream

—

Camera

video/VP8

Video Stream

960×540, 1280×720, 1920×1080

  • Audio (Microphone): Encoded using RED for redundancy, improving resilience against packet loss.

  • Video (Camera): Published in multiple resolutions (540p, 720p, 1080p) to support adaptive simulcast streaming.

hashtag
6. 🎞️ Codec Priority and Compatibility

Popin prioritizes codecs in the following order to balance performance, quality, and compatibility:

Codec Priority List:

  1. VP8 — Default codec for broad compatibility and low latency.

  2. H.264 — Hardware-accelerated and widely supported across devices.

  3. VP9 — Provides improved compression for modern browsers.

  4. AV1 — Offers high-quality video at lower bitrates (emerging support).

  5. H.265 (HEVC) — Supported on select clients for advanced compression and 4K optimization.

Popin automatically negotiates the optimal codec based on participant capabilities and real-time network conditions.

hashtag
7. ⚙️ Backend Architecture

Popin’s media infrastructure uses a Selective Forwarding Unit (SFU) design to efficiently route video and audio streams with minimal latency.

Technical Highlights:

  • Transport Protocol: WebRTC media transport with SRTP encryption.

  • Signaling: WebSocket-based with Protocol Buffers (Protobuf) serialization for minimal overhead.

  • Adaptive Bitrate (ABR): Automatically adjusts stream quality based on bandwidth and device performance.

  • Simulcast Support: Multiple simultaneous video layers (540p, 720p, 1080p) for optimized network usage.

This architecture delivers scalability, low latency, and high-quality experiences for both one-to-one and multiparty video sessions.

PreviousHow to Start and Join a Popin Conference using the Android SDKNext1:Many Integration API Guide

Last updated