Audio for video can be heard, but no visual

[rkwright]

The EPUB loads in Chrome correctly and the video can be STARTED, but once it is started the video (and the controls) disappears although the AUDIO continues to play just fine.

Plays fine in iBooks and the SDKLauncher-OSX. Fails only in Chrome.

Tested with Chrome Extension 2.15.2 on OSX Yosemite (10,10.1)

File is here: https://readiumfoundation.box.com/s/eruhof2djmz3mmj1qg3a

[danielweck]

I am able to reproduce this Chrome-specific rendering bug with the provided EPUB, and cc-shared-culture-20120130.epub. Thanks @rkwright

Note that Opera also suffers from this bug too, but only with the provided EPUB (it looks like this issue depends on video codecs).

Safari does not exhibit this rendering bug (different WebKit version? WebKit2 vs. Chromium?).

Anyway, now "fixed", by triggering CSS3D GPU acceleration specifically on video elements (note that this does not work in Opera, because unfortunately the video controls become unresponsive):

readium/readium-shared-js@dc921ee