[Webkit-unassigned] [Bug 129626] WebGL slow video to texture

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=129626





--- Comment #1 from Florian Bösch <pyalot at gmail.com>  2014-08-09 03:54:58 PST ---
Retested with Chrome 36.0.1985.125, Firefox Aurora 33.0a2, Safari 6.1.4 and Internet Explorer 11

TL;DR Firefox now outperforms Chrome by around 600% on OSX and Linux. Safari has the worst performance and worst video format support.

Summary of result tables, for full results please see: http://codeflow.org/issues/slow_video_to_texture/

Ubuntu:
            FPS    UPms    FPS    UPms    FPS    UPms
Chrome 36    1080p    46.42    8.08    46.22    7.97    46.72    7.80
Chrome 35    1080p    45.28    8.02    45.10    8.03    45.39    7.98
Firefox Aurora    1080p    60.04    1.00    60.04    1.14    60.02    1.18

OSX:
            FPS    UPms    FPS    UPms    FPS    UPms
Chrome 36    1080p    59.56    9.91    59.72    9.96    59.78    9.91
Chrome 35    1080p    59.77    13.47    58.88    14.51    59.85    13.69
Firefox Aurora    1080p    N/A    N/A    59.50    1.54    59.07    1.50
Safari 6.1.4    1080p    20.07    34.94    N/A    N/A    N/A    N/A

Windows 8.1:

            FPS    UPms    FPS    UPms    FPS    UPms
Chrome 36    1080p    51.22    11.53    59.53    7.16    59.23    7.23
Firefox Aurora    1080p            57.14    9.55    56.89    9.41
IE11        video not supported for upload

Conclusion: Firefox has made good efforts in its Aurora build (scheduled to be beta early September, and release early October) on OSX and Linux, these now outperform Chrome by a substantial margin (by ~600%) and pushed upload times into the range of 1-2ms. Chrome 36 has also made some gains on Chrome 35 on OSX (by ~45%). Firefox has yet to implement their improvements on Windows and has also got to deal with bugs in their h.264 support on Windows.

Safari Issues:

- Only H.264 is supported
- The H.264 support is very slow and choppy

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