[webkit-gtk] HTML5 video performance

Sven Schwedas sven.schwedas at tao.at
Fri Sep 2 04:43:58 PDT 2016


When playing back videos via WebkitGTK (2.4.11 /Midori 0.5.11), we're
seeing massive performance degradations compared to plain gst-play –
<10% CPU load compared to 40% CPU load on an i5-2520M (with VAAPI
enabled), and ~30% compared to 100%+ stutter on an AMD GX-210HA APU
(with VDPAU enabled) for FHD h.264 videos (on otherwise completely empty
test pages).

Where does the overhead come from? VAAPI/VDPAU are definitely enabled
and working (uninstalling gstreamer-vaapi makes it stutter everywhere),
screen compositor also has no performance impact.

Mit freundlichen Grüßen, / Best Regards,
Sven Schwedas, Systemadministrator
Mail/XMPP sven.schwedas at tao.at | Skype sven.schwedas
TAO Digital | Lendplatz 45 | A8020 Graz
https://www.tao-digital.at | Tel +43 680 301 7167

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