shots record (web): frames at device pixels through Page.captureScreenshot (clip scale = dpr, long side capped at 1920, 3 requests in flight, midpoint timestamps into the ffmpeg concat); Chromium's screencast stayed at CSS size. Warnings for frames smaller than asked and under 20 frames/s; record-web browser test, pitfall 85

skills/app-previews/SKILL.md

@@ -34,7 +34,9 @@ other platforms' UI. Play promo video: YouTube URL, public or unlisted, ads off,
    or `url` / `args` / `extras` (simulator / emulator), `waitFor`, `delayMs`. The source and its settings come from
    `shots.capture` (or `record.source`). `storebound shots record --dry` shows the plan, then
    `storebound shots record` writes `store/video/clips/<lang>/NN-<name>.mp4` (30 fps H.264, no audio).
-   - web: Chromium screencast at 2x the frame size, filming starts when `waitFor` is true.
+   - web: JPEG frames at the frame's device pixels (`Page.captureScreenshot`, long side capped at 1920, the tallest
+     store video), 3 requests in flight (~45-55 frames/s), joined at their real timings; filming starts when `waitFor`
+     is true. It warns when frames come out smaller than asked (an upscale) or under 20 frames/s.
    - ios-sim: `simctl io recordVideo`, stopped after `seconds`; boots (and later shuts down) the simulator if needed;
      the first launch after a cold boot gets `ios.warmupMs`. A still ending is padded with the last frame.
    - android-emu: `screenrecord` on the running emulator / device (never booted, wiped or rebooted).