{
  "kind": "generated-auto-thumbnail-timeline",
  "version": "ffmpeg version 2025-11-12-git-6cdd2cbe32-full_build-www.gyan.dev Copyright (c) 2000-2025 the FFmpeg developers",
  "args": [
    "-hide_banner",
    "-loglevel",
    "error",
    "-n",
    "-f",
    "lavfi",
    "-i",
    "color=c=purple:s=320x180:r=30:d=0.033333333",
    "-f",
    "lavfi",
    "-i",
    "color=c=red:s=320x180:r=30:d=1.966666667",
    "-f",
    "lavfi",
    "-i",
    "color=c=black:s=320x180:r=30:d=2",
    "-f",
    "lavfi",
    "-i",
    "color=c=blue:s=320x180:r=30:d=2",
    "-f",
    "lavfi",
    "-i",
    "color=c=yellow:s=320x180:r=30:d=2",
    "-filter_complex",
    "[0:v][1:v][2:v][3:v][4:v]concat=n=5:v=1:a=0[v]",
    "-map",
    "[v]",
    "-c:v",
    "libx264",
    "-pix_fmt",
    "yuv420p",
    "-g",
    "30",
    "-movflags",
    "+faststart",
    "auto-thumbnail-timeline.mp4"
  ],
  "width": 320,
  "height": 180,
  "fps": 30,
  "duration": 8,
  "segments": [
    [
      "purple",
      "0.033333333"
    ],
    [
      "red",
      "1.966666667"
    ],
    [
      "black",
      "2"
    ],
    [
      "blue",
      "2"
    ],
    [
      "yellow",
      "2"
    ]
  ],
  "purpose": "Unique purple first frame, then red/black/blue/yellow timeline; distinguish missing transparent pixels, legitimate black frames and stale first frames.",
  "file": {
    "name": "auto-thumbnail-timeline.mp4",
    "bytes": 8602,
    "sha256": "10370156cffada462d3ea00aae0caadd62752369cd6538cc55248b3ddd7bf994"
  }
}