Remove overflow: hidden from .libjass-wrapper

[Arnavion]

It prevents scrollbars if the video is larger than the viewport.

It exists to hide the .libjass-font-measure divs when they're being used. Need to find another way to hide them, or atleast remove the overflow: hidden when they're not being used.

[XCanG]

@Arnavion did you try this CSS rule?:
clip: rect(Y1, X1, Y2, X2) | auto | inherit
also analogs:
clip-path: url(#clipping); link to svg file with mask (may be placed in same document at the end)

<svg>
  <defs>
    <clipPath id="clipping">
      <rect x="X1" y="Y1" width="W" height="H"/>
    </clipPath>
  </defs>
</svg>

clip-path: polygon(0px 0px, X 0px, X Y, 0px Y); or directly

mask-image: url(mask.svg); or again link to svg where black is opaque and white is transparent,
mask: url(mask.svg) top left / cover; will adjust size to element

-webkit-mask-box-image: url("border.svg") 100 repeat;
  mask-border: url("border.svg") 100 repeat;

another way to masking border content

More info here:
https://developer.mozilla.org/en-US/docs/Web/CSS/clip
https://developer.mozilla.org/en-US/docs/Web/CSS/clip-path
https://developer.mozilla.org/en-US/docs/Web/SVG/Element/rect
https://developer.mozilla.org/en-US/docs/Web/CSS/mask
http://www.html5rocks.com/en/tutorials/masking/adobe/
http://codepen.io/yoksel/full/fsdbu/
https://www.w3.org/TR/css-masking/

[Arnavion]

Yes, clip is also what I was thinking of.

[Arnavion]

Right, now I remember. clips don't work because they affect visibility, not layout, so they don't solve the problem that overflow: hidden currently solves (that the font-measure divs don't affect layout of the rest of the page).

[XCanG]

Hm, how about rendering on canvas?

[Arnavion]

#13 especially the third comment