---------- Forwarded message ---------- From: seba.wag...@gmail.com <seba.wag...@gmail.com> Date: Tue, Mar 12, 2013 at 2:56 PM Subject: Re: SWF11 components performance/stability To: Maxim Solodovnik <solomax...@gmail.com>
Sorry I did not meant default h323 I meant the default Sorenson Spark <http://en.wikipedia.org/wiki/Sorenson_Spark> (Sorenson H.263) Sebastian 2013/3/12 seba.wag...@gmail.com <seba.wag...@gmail.com> h264 simply needs more computing time. > AEC also is enabled (which needs some percentages more CPU power then the > previous implementation). > > Switching to later Flex SDK is surely desirable but basically the > performance is a Flash Player/VirtualMachine issue not a Flash Compiler > issue. So as long as there is no Flash Player 12 that requires a later Flex > SDK it is unlikely that you will gain performance advantages. > > I think there is a hardware acceleration for playback of h264 video, but I > have really no idea about producing h264 in the browser in that context. > > From my point of view the main reason for using h264 is the SIP > integration. For users that don't use SIP integration using h264 will > simply just mean an annoying CPU usage. > The case is different for AEC from my point of view. AEC brings > enhancement for everybody immediately. And the more of CPU that it uses is > only 3-4 % from my point of view. > > So my preference would be to make the video codec use the standard h323. > To be honest: Who has ever complained in the last couple of years about > video quality? The discussion is almost always about audio delay, audio > quality, micro echo, bad microphones et cetera but actually never about > video quality. > And from what I have seen h264 also brings no improvements in terms of > bandwidth usage. > h264 could be available via configuration (or to enable SIP integration), > but h323 should be used by default. > > Sebastian > > > 2013/3/12 Maxim Solodovnik <solomax...@gmail.com> > >> Hello Raju, Sebastian, >> >> according to https://issues.apache.org/jira/browse/OPENMEETINGS-559 and >> various user reports (including mail from Sebastian[1]) >> >> Main code changes were: adding EnchancedMicrophone and switch to h264 >> >> According to the Google switching to h264 can cause higher CPU usage. >> Can this be fixed by changing H264Level? (currently H264Level.LEVEL_1_2 >> is used) >> >> Maybe you can us understand were performance/stability degradation caused >> by code changes? Or maybe it is because of Flex4.6.0? >> >> Can stability be improved by switching to Flex4.9.1? >> >> Thanks in advance for your help >> >> >> [1] http://markmail.org/message/2el63qarsjmbvfyy >> >> <http://markmail.org/message/2el63qarsjmbvfyy>-- >> WBR >> Maxim aka solomax >> > > > > -- > Sebastian Wagner > https://twitter.com/#!/dead_lock > http://www.webbase-design.de > http://www.wagner-sebastian.com > seba.wag...@gmail.com > -- Sebastian Wagner https://twitter.com/#!/dead_lock http://www.webbase-design.de http://www.wagner-sebastian.com seba.wag...@gmail.com -- WBR Maxim aka solomax
