Say that the samples were rendered one-pass

samples/idol/README.md

@@ -45,6 +45,25 @@ That is higher than the 0.0261 mean across the five benchmark prompts in
 `../README.md` — a 317-token prompt with ten sequenced actions gives compression
 more to lose than "a blacksmith hammers steel".
 
+## Sharper: the pass these clips were missing
+
+`idol-10s-1024x640-2pass.mp4` is the same prompt and seed as
+`idol-10s-4bit.mp4`, run through the vendor's full pipeline instead of half of
+it: sample at 512x320, upscale the latent 2x, sample again at 1024x640.
+
+![one pass against two](https://huggingface.co/topabaem/LTX-2.5-Text-Encoder-4bit-8GB/resolve/main/samples/idol/sharpness-1pass-vs-2pass.png)
+
+Left is the one-pass render enlarged afterwards, right is the two-pass render,
+same frame, 1:1. Eyes, teeth, the star earring and the dress frills are separate
+objects on the right and mush on the left — 4.1x the Laplacian variance on a
+common grid.
+
+**Every other clip here, and every clip in `../`, is one-pass.** The renderer
+skipped that second pass on a written assumption that a 16 GB card could not
+afford it. Measured, it peaks at 10.03 GiB and takes 312 s — it fits. So these
+samples understate what the encoder drives, and the softness in them was never
+the compression.
+
 ## Cost
 
 | clip | wall clock | peak VRAM |