Antar grid-bench

Single-page loopback harness for the command-grid input path. Both ends of the WebRTC connection live in this page. The encoder canvas is the real renderCommandGrid, the sample loop runs the real CommandFrameDecoder, transport is real WebRTC. Constrain the sender's bitrate / scale to reproduce bad-link conditions deterministically — no DevTools throttling, no netem, no extension.

Test parameters

Input string repeat ×

Typing rate (cps) chars/sec into the transient queue

Max bitrate (kbit/s) set via RTCRtpSender.setParameters

scaleResolutionDownBy

Grid fps

Canvas (encoder) ×

Warmup (s) wait after PC connect before typing — lets WebRTC reach steady bitrate

Cold start skip warmup entirely; types immediately after PC connect (production-realistic)

scale apply mode when scaleResolutionDownBy is applied. polled-1s = 1 s after addTrack via setInterval, matching the extension's patch

TEXT repeatsLeft per-char redundancy across packets; prod default 3

Drain window (s) extra time after last keystroke before reporting

idle

Report

(no run yet)

encoder canvas (sender)

received video (post-WebRTC)

decoder sample