HTML5 Videos Won't Load in Safari

Discussion in 'iMac' started by cincygolfgrrl, Aug 20, 2016.

  1. cincygolfgrrl macrumors 6502


    Apr 2, 2012
    Somewhere In Time
    OP's Note: I've had this posted in the El Capitan forum for a few weeks with 200+ views, but no responses. I thought putting it here might attract an idea or two. Thanks.

    I have a late-2013 iMac (pre-5K) that suddenly won't show embedded video in Safari, including YouTube videos. The problem is characterized by a black frame where the HTML5 player ought to be displayed. I can't swear to it, but I think this issue dates to the installation of 10.11.6.

    I do not have Flash installed. If I feel compelled to view a video I'll copy the link into a Chrome browser. That works, but I really, really don't want to use Chrome.

    As far as I can tell the problem is limited to HTML5 videos in Safari. I've looked at Safari preferences and have reconfigured some I thought might help, to no avail. There's nothing on Apple's Support site that addresses my concern.

    Your thoughts?
  2. redheeler macrumors 604


    Oct 17, 2014
    Strange. Does the same problem occur in Safari Technology Preview?
  3. cincygolfgrrl thread starter macrumors 6502


    Apr 2, 2012
    Somewhere In Time
    Uh-oh. I guess I need to turn in my MacRumors membership. I have no idea what Safari Technology Preview is.
  4. Weaselboy Moderator


    Staff Member

    Jan 23, 2005

    It is a new test version of Safari.

    HTML5 videos work fine for me on 10.11.6. Just as a test, open System Preferences and in Users & Groups, make a new, test admin account. Then reboot and login to that account. Don't change any settings or anything and start Safari and see if the HTMl% videos work from that account. If they do, that tells us it is something about your account, like a settings or extension/utility that is causing the issue.
  5. cincygolfgrrl thread starter macrumors 6502


    Apr 2, 2012
    Somewhere In Time
    Thanks Red and Wease.

    Videos work great in Safari Technology Preview, but not my default Safari browser. This is a fairly new thing, and with Sierra coming out in less than a month (we think), I'm willing to ride out the inconvenience. In the meantime I'll do more poking in settings.

    If you have more thoughts on this please let me know.
  6. Weaselboy Moderator


    Staff Member

    Jan 23, 2005
    Did you try the second account like I suggested?
  7. cincygolfgrrl thread starter macrumors 6502


    Apr 2, 2012
    Somewhere In Time
    Yep. Created the new test admin account. Videos played in all Safari instances in the test account. Something got screwed up when I installed 10.11.6. I really wish I knew why and I'll keep picking at it, but with the new OS coming soon I'm not going to lose sleep. Thanks again for your ideas.
  8. Weaselboy Moderator


    Staff Member

    Jan 23, 2005
    If it works fine in the test account and not in your account, then you have some startup or login item causing this in your account only.

    Run the app Etrecheck and it will create an anonymized report showing all these hidden launch items. Post the report here so we can take a look.
  9. cincygolfgrrl thread starter macrumors 6502


    Apr 2, 2012
    Somewhere In Time
    Here you go.

    EtreCheck version: 3.0.2 (306)

    Report generated 2016-08-23 21:02:41

    Download EtreCheck from

    Runtime 1:32

    Performance: Excellent

    Click the [Support] links for help with non-Apple products.

    Click the [Details] links for more information about that line.

    Problem: No problem - just checking

    Hardware Information:

    iMac (27-inch, Late 2013)

    [Technical Specifications] - [User Guide] - [Warranty & Service]

    iMac - model: iMac14,2

    1 3.5 GHz Intel Core i7 CPU: 4-core

    16 GB RAM Upgradeable - [Instructions]

    BANK 0/DIMM0

    8 GB DDR3 1600 MHz ok

    BANK 1/DIMM0

    8 GB DDR3 1600 MHz ok

    BANK 0/DIMM1


    BANK 1/DIMM1


    Bluetooth: Good - Handoff/Airdrop2 supported

    Wireless: en1: 802.11 a/b/g/n/ac

    Video Information:

    NVIDIA GeForce GTX 780M - VRAM: 4096 MB

    iMac 2560 x 1440

    System Software:

    OS X El Capitan 10.11.6 (15G31) - Time since boot: about one day

    Disk Information:

    APPLE SSD SM0512F disk0 : (500.28 GB) (Solid State - TRIM: Yes)

    EFI (disk0s1) <not mounted> : 210 MB

    Recovery HD (disk0s3) <not mounted> [Recovery]: 650 MB

    Macintosh HD (disk1) / : 499.10 GB (246.12 GB free)

    Core Storage: disk0s2 499.42 GB Online

    USB Information:

    VIA Labs, Inc. USB3.0 Hub 1 TB

    VIA Labs, Inc. USB3.0 Hub 1 TB

    Seagate BUP Slim Mac SL 1 TB

    EFI (disk4s1) <not mounted> : 210 MB

    tm backup (disk4s2) /Volumes/tm backup : 999.86 GB (118.73 GB free)

    Apple Inc. BRCM20702 Hub

    Apple Inc. Bluetooth USB Host Controller

    Apple Inc. FaceTime HD Camera (Built-in)

    VIA Labs, Inc. USB2.0 Hub 1 TB

    VIA Labs, Inc. USB2.0 Hub


    Western Digital My Passport 0820 1 TB

    EFI (disk3s1) <not mounted> : 210 MB

    lr catalog (disk3s2) /Volumes/lr catalog : 999.83 GB (690.66 GB free)

    Seagate Backup+ Mac SL 1 TB

    EFI (disk2s1) <not mounted> : 210 MB

    mac clone (disk2s2) <not mounted> : 500.10 GB

    photobkup (disk2s3) /Volumes/photobkup : 499.62 GB (327.18 GB free)

    Thunderbolt Information:

    Apple Inc. thunderbolt_bus



    Kernel Extensions:


    [not loaded] com.beatsbydre.BeatsDFUSupport (3.0.0 - SDK 10.11 - 2016-07-01) [Support]

    System Launch Agents:

    [not loaded] 7 Apple tasks

    [loaded] 143 Apple tasks

    [running] 88 Apple tasks

    System Launch Daemons:

    [not loaded] 45 Apple tasks

    [loaded] 148 Apple tasks

    [running] 98 Apple tasks

    Launch Agents:

    [failed] com.adobe.ARMDCHelper.cc24aef4a1b90ed56a725c38014c95072f92651fb65e1bf9c8e43c37a23d420d.plist (2016-07-11) [Support]

    [running] com.bjango.istatmenusagent.plist (2016-07-24) [Support]

    [running] com.bjango.istatmenusnotifications.plist (2016-07-24) [Support]

    [running] com.bjango.istatmenusstatus.plist (2016-07-24) [Support]

    [loaded] (2016-07-12) [Support]

    [loaded] (2014-11-14) [Support]

    Launch Daemons:

    [loaded] com.adobe.ARMDC.Communicator.plist (2016-07-11) [Support]

    [loaded] com.adobe.ARMDC.SMJobBlessHelper.plist (2016-07-11) [Support]

    [running] com.backblaze.bzserv.plist (2016-07-12) [Support]

    [running] com.bjango.istatmenusdaemon.plist (2016-07-24) [Support]

    [running] com.bombich.ccchelper.plist (2014-11-13) [Support]

    [loaded] (2016-07-12) [Support]

    [loaded] com.malwarebytes.HelperTool.plist (2016-08-16) [Support]

    [loaded] (2016-03-19) [Support]

    [loaded] (2015-10-08) [Support]

    [loaded] (2014-11-14) [Support]

    [loaded] com.surteesstudios.Bartender.BartenderInstallHelper.plist (2015-10-16) [Support]

    [loaded] com.timesoftware.timemachineeditor.backup-auto.plist (2016-07-03) [Support]

    [loaded] com.timesoftware.timemachineeditor.helper.plist (2015-10-24) [Support]

    [running] de.appgineers.Mountain.Helper.plist (2016-03-10) [Support]

    User Launch Agents:

    [failed] com.adobe.ARM.[...].plist (2012-02-22) [Support]

    [running] com.backblaze.bzbmenu.plist (2016-08-22) [Support]

    [running] com.c-command.SpamSieve.LaunchAgent.plist (2016-08-22) [Support]

    [loaded] com.citrixonline.GoToMeeting.G2MUpdate.plist (2016-01-27) [Support]

    [failed] com.hp.printerAgent.plist (2011-10-21) [Support]

    [loaded] (2012-04-17) [Support]

    User Login Items:

    Flux Application (/Applications/

    Mountain Application (/Applications/

    PopClip Application (/Applications/

    Bartender Application (/Applications/

    Palua Application (/Applications/

    Dropbox Application (/Applications/

    Alfred 2 Application (/Applications/Alfred

    Caffeine Application (/Applications/

    TextExpander Application (/Applications/

    CCC User Agent Application (/Applications/Carbon Copy User

    Due Application (/Applications/

    Orbis Application (/Applications/

    HazelHelper Application (~/Library/PreferencePanes/Hazel.prefPane/Contents/MacOS/

    WD Quick View Application (/Library/Application Support/WDSmartware/

    Internet Plug-ins:

    QuickTime Plugin: 7.7.3 (2016-07-19)

    AdobePDFViewerNPAPI: 15.017.20053 - SDK 10.11 (2016-08-04) [Support]

    AdobePDFViewer: 15.017.20053 - SDK 10.11 (2016-08-04) [Support]

    Default Browser: 601 - SDK 10.11 (2016-07-19)

    Google Earth Web Plug-in: 7.1 (2016-08-19) [Support]

    Silverlight: 5.1.40728.0 - SDK 10.6 (2015-08-30) [Support]

    JavaAppletPlugin: Java 8 Update 25 (2014-11-14) Check version

    User internet Plug-ins:

    CitrixOnlineWebDeploymentPlugin: 1.0.105 (2016-01-27) [Support]

    NugsterPlugin: Unknown - SDK 10.7 (2015-07-06) [Support]

    Google Earth Web Plug-in: 7.1 (2013-10-07) [Support]

    Safari Extensions:

    Ghostery - GHOSTERY, Inc. - (2016-03-11)

    Instapaper - Instapaper Holdings Inc. - (2016-03-11)

    ClickToFlash - Marc Hoyois - (2015-07-29)

    ClickToPlugin - Marc Hoyois - (2015-07-29)

    DuckDuckGo - DuckDuckGo - (2015-07-11)

    1Password - AgileBits - (2016-07-24)

    Shortly - Zhusee (ZZHC Studio) - (2015-01-25)

    Audio Plug-ins:

    BartenderAudioPlugIn: 1.0.0 - SDK 10.10 (2015-10-14) [Support]

    3rd Party Preference Panes:

    Backblaze Backup (2016-07-12) [Support]

    Hazel (2016-08-15) [Support]

    Java (2014-09-17) [Support]

    WDQuickView (2014-11-14) [Support]

    Time Machine:

    Skip System Files: NO

    Mobile backups: OFF

    Auto backup: NO - Auto backup turned off

    Volumes being backed up:

    lr catalog: Disk size: 999.83 GB Disk used: 309.17 GB

    Macintosh HD: Disk size: 499.10 GB Disk used: 252.98 GB


    tm backup [Local]

    Total size: 999.86 GB

    Total number of backups: 100

    Oldest backup: 3/2/15, 4:37 PM

    Last backup: 8/23/16, 7:13 PM

    Size of backup disk: Too small

    Backup size 999.86 GB < (Disk used 562.15 GB X 3)

    Top Processes by CPU:

    4% WindowServer

    2% kernel_task

    2% fontd

    1% ps

    1% Finder

    Top Processes by Memory:

    2.13 GB

    1.19 GB kernel_task

    475 MB softwareupdated

    377 MB Safari

    246 MB mds_stores

    Virtual Memory Information:

    5.64 GB Free RAM

    10.00 GB Used RAM (2.56 GB Cached)

    0 B Swap Used

    Diagnostics Information:

    Aug 22, 2016, 05:28:31 PM Self test - passed
  10. Weaselboy Moderator


    Staff Member

    Jan 23, 2005
    Wow... you have LOT of things running here an it will take some work to narrow down what is causing this.

    The fact is does not occur in the new test account means it has to be something launching in the old user account that I have copied into this post.

    Let's start by turning off all these Safari extensions. Open Safari then in Safari preferences go to the extensions tab and by each of these extensions UNcheck the enable box so the extension is turned off. Do that will every one on this list and see if that fixes it.

    If not, lets turn off these user Internet plugins. Make a temp folder on the Desktop to move these items into. Now select the entire line below with your mouse then right click and in Services click "Reveal in Finder"... that will open the folder in Finder. Now drag everything from that folder to the temp Desktop folder. Restart the Mac and see if that fixes it. If not, skip to the next section below.

    ~/Library/Internet Plug-Ins

    Nest lets get rid of these user launch agents. All of these run in your account but not the new one. Do the same seelct and right click then Services and Reveal in Finder as before to get to the folder. Remove all these items to the Desktop folder then reboot and test.

    If that does not work, proceed to the next section.

    Similar deal here. Open System Preferences and in Users & Groups go to Login items and remove everything then reboot and test. (You can probably leave CCC, Alfred, Dropbox, and Bartender... as I am using those and not having this issue).

    There is just no easy way to do this. You just have to remove these items in groups until you find the culprit as a group. Then within the group start adding things back and restarting and testing over and over until you narrow it down.

    What helps is to printout the Etrecheck report and use that as a worksheet to track what you have done.

    But the bottom line is something on this list in my post is causing this in the main account.
  11. cincygolfgrrl thread starter macrumors 6502


    Apr 2, 2012
    Somewhere In Time
    Thanks for taking the time to go through the report and make comments. When I got to my computer this morning I found that (magically) vids were working in my user account in Safari. Yesterday, on a lark, I turned off two Safari extensions that had been around so long with no ill effects that I blew right by them every time I searched Preferences, looking for something that could possibly cause this problem.

    ClickToFlash - Marc Hoyois - (2015-07-29)

    ClickToPlugin - Marc Hoyois - (2015-07-29)
    My guess would be 10.11.6 changed something that affected the extensions because vids played in user accounts without those extensions always worked as intended.

    So, my bad for not looking beyond the obvious. Again, thank you for your help. You taught me a few things.
  12. Weaselboy Moderator


    Staff Member

    Jan 23, 2005
    You are quite welcome. Glad you got it sorted out.

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