VideoSDK's Blogs - VideoSDK

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Introducing "NAMO" Real-Time Speech AI Model: On-Device & Hybrid Cloud

NAMO real-time speech AI model is VideoSDK's open-source SSLM with hybrid on-device and cloud inference for low-latency, privacy-first voice agents. Compare architectures, integrate via Agent SDK, and avoid production pitfalls.

HLS vs MPEG-DASH: Which Live Streaming Protocol to Use?

How HLS and MPEG-DASH differ on native playback, codecs, content protection and latency, where each one breaks, how one set of fMP4 segments can serve both, and which to use for a live streaming product.

CBR vs VBR: Constant vs Variable Bitrate for Live Streaming

Constant or variable bitrate? What each rate-control mode does inside the encoder, the peak limits HLS and YouTube set, capped VBR and two-pass VBR, and where the choice sits in a video SDK.

Frame Rate (FPS) Explained: What Frames Per Second Means & Which Frame Rate to Use?

Frames per second is the count of images in each second of video, and the rate you choose decides how motion looks, how much bitrate you need and how long your GOP runs. Here are the standard rates, what Apple, YouTube and Amazon IVS ask for, and what variable frame rate does to an encoder.

What is a Keyframe? Keyframe Intervals and GOPs Explained

A keyframe is the complete picture a decoder can start from, and the keyframe interval decides how fast a viewer can join, seek or switch quality. Here are the frame types, the GOP, the intervals Apple, YouTube, Amazon IVS and Cloudflare ask for, and what OBS auto really sets.

Poor Call Quality: How to Test VoIP & WebRTC Call Quality?

Poor call quality has a cause you can measure. A five-step VoIP and WebRTC call quality test, the thresholds to compare against, a symptom-to-cause table, and fixes for the network, QoS, app settings, and SIP-connected AI voice agents.

Noise Suppression for Voice & Video Calls

Noise suppression removes background sound from a microphone signal while keeping the voice. How classic and AI denoisers work, how they differ from noise reduction, echo cancellation and gain control, and how to add noise suppression in the browser, in mobile apps and with VideoSDK.

What Is QoE (Quality of Experience)? QoE vs QoS, MOS Explained

QoE, or quality of experience, is what the participant took away from a call, while QoS is what the network delivered. The ITU definition, a QoE vs QoS table, the metrics that matter for real-time video, and three ways to measure QoE in production.

What is Video KYC (vKYC)?

VKYC, or video KYC, verifies a customer's identity over a live, recorded video call with a trained official. What RBI's 2025 KYC Directions require, the eight-step V-CIP process, VKYC vs eKYC vs physical KYC, why calls fail, and the video technology behind it.