?variant= |
auto |
auto · mt_simd · simd · mt · scalar |
Force a specific WASM build. auto picks the best available for the browser. |
?renderer= |
auto |
auto · webgl · 2d |
Force the renderer. auto prefers WebGL2 and falls back to Canvas 2D. |
?drop=1 |
off |
presence toggle |
Pre-check the Drop late frames checkbox on page load. When on, paced mode skips frames whose RTP-clock target is already past. Off by default — slow decoders play slow-motion rather than stall. |
?drop_periods= |
8 |
integer ≥ 1 |
Number of frame periods of slack before a frame is dropped (only when ?drop=1). At 29.97 fps the default is ≈ 267 ms. |
?nodrop=1 |
— |
presence toggle |
Legacy synonym for the current default (no dropping). Kept for URL compatibility; has no additional effect. |
?preroll= |
3 |
integer ≥ 0 |
Frames decoded back-to-back before the paced wall clock anchors. Absorbs cold-start decode spikes (SIMD warmup, WASM JIT). |
?ring= |
4 |
integer 2–32 |
Decode→display ring buffer depth. Larger values add latency but absorb decode jitter on slow or high-variance links. |
?verbose=1 |
off |
presence toggle |
Emit one [rtp_demo t=Ns …] line per second to the browser console with full pipeline stats. |
?wasmBase= |
/wasm/ |
URL path |
Override the directory where libopen_htj2k_*.{js,wasm} are served from. |