layout/reftests/webm-video/webm-alpha-2.html

   1 <!DOCTYPE html>
   2 <html lang="en">
   3 <meta charset="utf-8">
   4 <title>Reftest that checks whether WebM video with alpha is rendered with the correct stride</title>
   5
   6 <style>
   7 .edgeCover {
   8   position: absolute;
   9   box-shadow: 0 0 0 4px magenta, inset 0 0 0 4px magenta;
  10 }
  11 </style>
  12
  13 <div style="position: relative">
  14 <!--
  15   The video below was created as follows:
  16
  17   1. Run this code on the web console:
  18
  19 var c = document.createElement("canvas")
  20 c.width = 334;
  21 c.height = 334;
  22 var ctx = c.getContext("2d")
  23 ctx.fillStyle = "white"
  24 ctx.fillRect(0, 0, 334, 334)
  25 ctx.fillStyle = "red"
  26 ctx.fillRect(0, 0, 64, 64)
  27 ctx.fillStyle = "blue"
  28 ctx.fillRect(64, 0, 64, 64)
  29 ctx.fillStyle = "yellow"
  30 ctx.fillRect(0, 64, 64, 64)
  31 ctx.fillStyle = "lime"
  32 ctx.fillRect(64, 64, 64, 64)
  33 ctx.fillStyle = "black"
  34 ctx.fillRect(196, 0, 16, 334)
  35 c.toDataURL()
  36
  37   2. Save the PNG to a file called "frame.png".
  38   3. Convert it to a WebM file using:
  39
  40 ffmpeg -framerate 25 -f image2 -i frame.png -c:v libvpx -auto-alt-ref 0 -pix_fmt yuva420p output.webm
  41
  42     (The "a" in "yuva420p" gives the video an alpha plane.)
  43
  44   4. Convert the WebM file to a data url.
  45
  46   The video size is 334x334. 334 is not divisible by 4. But 336 is divisible by 4 (and by 16).
  47 -->
  48   <video autoplay src="data:video/webm;base64,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"></video>
  49   <div class="edgeCover" style="left: 0; top: 0; width: 64px; height: 64px;"></div>
  50   <div class="edgeCover" style="left: 64px; top: 0; width: 64px; height: 64px;"></div>
  51   <div class="edgeCover" style="left: 0; top: 64px; width: 64px; height: 64px;"></div>
  52   <div class="edgeCover" style="left: 64px; top: 64px; width: 64px; height: 64px;"></div>
  53   <div class="edgeCover" style="left: 196px; top: 0; width: 16px; height: 334px;"></div>
  54 </div>