Thanks for posting this. This is definitely strange behavior, and not something I've seen before. It's almost like the different tabs are being constantly cycled.
Have you tried this on Firefox or Chrome to see if it's Safari specific? Also, could you go to Safari's help->Installed Plugins menu and copy/paste the contents of the page that is displayed to a forum reply? Maybe something is installed that is conflicting with Flash.
Since videos didn't play properly, I was using Chrome, which didn't have anything wrong until the most recent update (though the problem happens rarely). The problem, mainly appears when the video is in HD (Safari).This is all the information of Installed Plug-ins:
Módulo de Applet Java
Muestra el contenido del applet Java o un marcador de posición si Java no está instalado. — desde el archivo “JavaAppletPlugin.plugin”.
application/x-java-applet Basic Java Applets javaapplet application/x-java-applet;jpi-version=1.6.0_35 Java applet application/x-java-applet;version=1.1 Java applet application/x-java-applet;version=1.1.1 Java applet application/x-java-applet;version=1.1.2 Java applet application/x-java-applet;version=1.1.3 Java applet application/x-java-applet;version=1.2 Java applet application/x-java-applet;version=1.2.1 Java applet application/x-java-applet;version=1.2.2 Java applet application/x-java-applet;version=1.3 Java applet application/x-java-applet;version=1.3.1 Java applet application/x-java-applet;version=1.4 Java applet application/x-java-applet;version=1.4.2 Java applet application/x-java-applet;version=1.5 Java applet application/x-java-applet;version=1.6 Java applet application/x-java-vm Java applet application/x-java-vm-npruntime Java applet
Contribute Plug-inInbrowser Editor Plug-in — desde el archivo “npContributeMac.bundle”.
application/x-contribute html;htm;xml ibe
PDF incorporado de WebKit
application/pdf Formato PDF
QuickTime Plug-in 7.7.1
QuickTime Plug-in permite visualizar una amplia variedad de material multimedia en páginas web. Para más información, visite la web QuickTime. — desde el archivo “QuickTime Plugin.plugin”.
application/sdp Descriptor de secuencias SDP sdp application/x-mpeg Contenido AMC amc application/x-rtsp Descriptor de secuencias RTSP rtsp,rts application/x-sdp Descriptor de secuencias SDP sdp audio/3gpp Contenido 3GPP 3gp,3gpp audio/3gpp2 Contenido 3GPP2 3g2,3gp2 audio/aac Audio AAC aac,adts audio/ac3 Audio AC3 ac3 audio/aiff Audio AIFF aiff,aif,aifc,cdda audio/amr Audio AMR amr audio/basic Audio uLaw/AU au,snd,ulw audio/mp3 Audio MP3 mp3,swa audio/mp4 Contenido MPEG-4 mp4 audio/mpeg Audio MPEG mpeg,mpg,m1s,m1a,mp2,mpm,mpa,m2a,mp3,swa audio/mpeg3 Audio MP3 mp3,swa audio/vnd.qcelp Audio QUALCOMM PureVoice qcp,qcp audio/wav Audio WAVE wav,bwf audio/x-aac Audio AAC aac,adts audio/x-ac3 Audio AC3 ac3 audio/x-aiff Audio AIFF aiff,aif,aifc,cdda audio/x-caf Audio CAF caf audio/x-gsm Audio GSM gsm audio/x-m4a Audio AAC m4a audio/x-m4b Audiolibro AAC m4b audio/x-m4p Audio AAC (protegido) m4p audio/x-mp3 Audio MP3 mp3,swa audio/x-mpeg Audio MPEG mpeg,mpg,m1s,m1a,mp2,mpm,mpa,m2a,mp3,swa audio/x-mpeg3 Audio MP3 mp3,swa audio/x-wav Audio WAVE wav,bwf video/3gpp Contenido 3GPP 3gp,3gpp video/3gpp2 Contenido 3GPP2 3g2,3gp2 video/avi Video for Windows (AVI) avi,vfw video/mp4 Contenido MPEG-4 mp4 video/mpeg Contenido MPEG mpeg,mpg,m1s,m1v,m1a,m75,m15,mp2,mpm,mpv,mpa video/msvideo Video for Windows (AVI) avi,vfw video/quicktime Película QuickTime mov,qt,mqv video/sd-video Vídeo SD sdv video/x-m4v Vídeo (protegido) m4v video/x-mpeg Contenido MPEG mpeg,mpg,m1s,m1v,m1a,m75,m15,mp2,mpm,mpv,mpa video/x-msvideo Video for Windows (AVI) avi,vfw
SharePoint Browser Plug-in
Microsoft Office for Mac SharePoint Browser Plug-in — desde el archivo “SharePointBrowserPlugin.plugin”.
application/x-sharepoint Microsoft Office for Mac SharePoint Browser Plug-in
Shockwave Flash 11.4 r402 — desde el archivo “Flash Player.plugin”.
application/futuresplash FutureSplash Player spl application/x-shockwave-flash Shockwave Flash swf
Thanks for posting the page. Do you have to specifically bring up the settings dialog (the white dialog that is constantly flashing) or does this come up automatically when HD video is displayed?
Yes, I bring it up. It was just just to show the problem presented.
Thanks. I've forwarded this to our video team but I'd like to have you add a bug report on this when you have a few minutes. Please visit http://bugbase.adobe.com and give us a brief description of the problem. Please reference this post and your youtube screen recording. Finally, it might be useful to get your system profile info attached to the bug. Please see this page for details.
Some additional questions from our video team:
Does this only happen with HD video? If you lower the resolution, does it work? How does your CPU usage look when this is occurring? This behavior looks like a keyboard focus issue, does the cycling stop if you hit a key (space, tab, etc)? Finally, what version of Safari are you using? Have you seen this happen in Firefox or Chrome?
It happens more often when the video is in HD. However, it can happen in any video quality. Videos stop when I click on the screen or use the keyboard to pause them (spacebar). I'm using version 6.0.1. So far, I've just experienced this problem once in Chrome. I use this browser to watch videos since the constant problem in Safari.
Thanks for the updated video. Does this only happen when you are waiting for the video buffer to catch up? Will this occur if video is playing properly?
Also, can you bring up the "show video info" overlay when right clicking a video in youtube? Would you mind taking a screenshot (or another video) when this overlay is visible and the problem is occurring?
It happens in both. Also, when I skip to an specific part of the video, it just stops playing.
This first recording shows the video playing perfectly, until I right click and select the "Settings" option.
And this one shows how without the need of displaying info, the red loading bar just goes back to certain point (the point when I changed to video to HD) and stops, around seconds 0:20 and 0:21 (of the recording). I clicked the right button to show "Video Info" for you to see, as well as "Settings".