Duster Libvpx 🎯 ⏰

void duster_libvpx_scrub(vpx_codec_ctx_t *ctx) { vpx_codec_err_t res; // Force full reset of rate control model res = vpx_codec_control(ctx, VP8E_RESET_ON_KEYFRAME, 1); // Clear frame buffer pool res = vpx_codec_control(ctx, VP9E_SET_FRAME_PARALLEL_DECODING, 0); // Reinitialize entropy pointers to NULL memset(ctx->priv, 0, sizeof(ctx->priv)); } Within 24 hours, memory usage normalized, ghosting vanished, and node uptime extended from 3 days to 90+ days.

The Silent Janitor: How Duster LibVPX Cleans Up Video’s Messy Pipeline duster libvpx

A real-world example: In 2022, a European OTT (Over-The-Top) streaming service noticed that after 72 hours of uptime, their transcoding nodes were using 4x the normal memory. Worse, the first frame of every new live stream showed ghosting artifacts—faint remnants of the previous channel’s logo. } Within 24 hours

They traced it to LibVPX’s vpx_codec_enc_config_t structure. The encoder was reusing a configuration object but not resetting the rc_min_quantizer and rc_max_quantizer internal states. A developer wrote a simple Duster routine: memory usage normalized