On Sat, Feb 4, 2012 at 10:03 AM, Dan Dennedy <d...@dennedy.org> wrote: > 2012/2/4 Maksym Veremeyenko <ve...@m1stereo.tv>: >> Hi, >> >> i am trying to use vdpau for mpeg2 decoding. i did a test patch that enable >> vdpau init for mpeg2. >> >> it works, but it still high cpu load. >> >> enabling vdpau gives only 15% of cpu load decrease (81% with vdpau 96% >> without vdpau) >> >> am i doing something wrong? > > Unlike other media players that only need to display via X11, MLT does > not use the P in VDPAU (presentation). Rather, it must fetch the > decoded images from video memory back into system memory, and that is > a bottleneck. That means it really only offers a benefit for H.264 on > older or low CPU powered devices. Someone is working on a set of GLSL > filters, and then it may have some more benefit by offloading enough > processing to justify the overhead of memory transfers.
I added a FAQ topic for this: http://www.mltframework.org/twiki/bin/view/MLT/Questions#Why_does_VDPAU_not_seem_to_offer -- +-DRD-+ ------------------------------------------------------------------------------ Try before you buy = See our experts in action! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-dev2 _______________________________________________ Mlt-devel mailing list Mlt-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mlt-devel
