What changes when you add an SFU (Mediasoup) in the middle of the pipeline?

Most WebRTC discussions about bitrate are wrong. Not because people don’t know the APIs, but because they don’t control the experiment.

So instead of asking:

“what bitrate should I use?”

I built something slightly different:

a reproducible WebRTC benchmark to measure how codecs behave under controlled conditions

This is what came out of it.

Designing Robust Spectral Validation for Audio Pipelines

Testing audio systems is deceptively hard.

Unlike text or structured data, audio pipelines are often lossy, time-sensitive, and highly stateful. Codecs introduce quantization noise, transports introduce jitter, buffers may reorder or drop frames, and decoders may subtly alter timing or amplitude. Traditional byte-level comparisons or waveform diffs are therefore brittle and misleading.

In this article, I present audio-test-fixtures, a deterministic, spectral-based approach to testing audio pipelines end-to-end. The result is a small but robust toolkit that generates known audio fixtures and validates decoded output using FFT-based frequency analysis, designed to work reliably even with lossy codecs and imperfect transports.

Respecto a arquitecturas WebRTC, no hay una bala de plata. Dependendiendo de cual sea el caso de uso, la arquitectura óptima puede variar de un proyecto a otro. Por este motivo, voy a explicar las principales arquitecturas de red que suelen aplicarse en proyectos basados en WebRTC (y principalmente aplicadas al streaming de video), y cuales son los pros y contras de cada uno de ellos.

I recently got to work on a project where I need to capture a camera, sendback some drawed feedback, exchange commands and chat messages (and voice comments), and record everything. I’ve always been interested on using non-mainstream features of the Web Platform, and after taking a look of the current state of the art, I’ve found a way to implement this particular use case using ONLY open and readily available web standards.

Sometimes, when you left out social networks and embrace back the Internet 90’s spirit, you find yourself rediscovering that the Web is still an amazing place :-)