Compression vs Downsampling | Downsampling Video Series скачать в хорошем качестве

Compression vs Downsampling | Downsampling Video Series

Report-by-Exception is not compression, its down-sampling— stop mixing them up. Why it matters: 1. Loss-less compression → keeps every sample, just packs it smarter. Think ZIP for files, or Timescale's (TigerData (creators of TimescaleDB)) background chunk rewrite that cuts storage by ~90 % with zero data loss. 2. Loss-y compression (down-sampling) → throws data away on purpose because the tiny wiggles add no value. Examples: Report-by-exception, Dead-band (ignore sensor noise), Swinging-door trending (drop points that don’t change slope) Use both, in order: 1️⃣ Apply a lossy rule at the edge to slash live bandwidth into the Unified Namespace. 2️⃣ Let your time-series DB apply loss-less compression to squeeze long-term storage even further.