coinosv3.git/tools/video-fallback-test.js, branch master

Video stills: past a black opening. vmedia took its still at half a second, and a clip that fades in from black (7 of the 68 made in three hours) gave a black tile. Each frame's mean brightness now comes out of ffmpeg (signalstats YAVG on pipe:2 — /dev/stderr can't be opened from a Bun-spawned pipe), and a dark one sends it further in (2, 5, 10, 20, 40 s) for the first bright frame; a clip dark all the way through (a night scene, a boot screen) gets its brightest frame with the levels stretched (normalize). Stills are made again under a new key and URL (v=4), so neither the server's nor the CDN's black copies are served.

2026-10-09T20:53:56Z

Co-Authored-By: Claude Opus 5.5 Claude-Session: https://claude.ai/code/session_01Vps2H27rhbG9ZqseGfMrc3

Feed videos before they play: the picture fills the box with only the play button and size (no seek bar or sound button until playing); hovering the cover no longer paints it over with the app's button grey; upright phone clips (stored sideways with a quarter-turn matrix) paint upright, v1 size caches dropped; a clip the probe found HEVC switches to the copy before fetching the original

2026-10-07T23:33:09Z

Co-Authored-By: Claude Opus 5.5

Videos: posters for clips that came without one, and an H.264 copy for a clip this browser can't picture (an iPhone's HEVC on Chrome for Linux played sound over black) — vmedia container on cs (bun + ffmpeg, /vmedia/), switch on zero-width metadata or an HEVC header from the probe, a line saying why if the copy fails too

2026-10-07T23:16:28Z

Co-Authored-By: Claude Opus 5.5