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    Fullscreen youtube colour artefacting.

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    • Nitesh SinghN
      Nitesh Singh
      last edited by

      I see this is a very old issue and I'm still seeing it, El Capitan 10.11.4, Iris Pro 5200. 7 months out, any word on a resolution?

      1 Reply Last reply Reply Quote 0
      • B
        benfowler
        last edited by benfowler


        There is 1 easy hack to avoid this issue.

        Put the mouse curser onto the youtube / netflix video scroll bar at the bottom of the screen.
        The issue seems to arise due to refresh rate at full screen video in safari.
        Possibly to save battery, safari technology doesnt refresh areas of the screen that have pixels the dont change or similar.
        But when you put the curser over this area, , it does seem to solve the issue .

        ? 1 Reply Last reply Reply Quote 2
        • P
          Poaji
          last edited by

          I'm still having the same issue in OS X El Capitan Version 10.11.3

          1 Reply Last reply Reply Quote 0
          • Nitesh SinghN
            Nitesh Singh @David Schlachter
            last edited by

            @David-Schlachter It seems related to Intel integrated GPUs. Intel/Apple never got around to fixing it on the Intel Mac driver.

            1 Reply Last reply Reply Quote 1
            • S
              shariffy
              last edited by

              What @benfowler said works. Which is mystifying... Anyone has any idea why showing the controls would affect the refresh rate or any other aspect of rendering?

              Also @f-lux-team: have you considered open-sourcing this project? Someone who's affected and with some coding chops might be able to give more debug info and maybe even submit a patch?

              Thanks for the great work and for looking into this issue.

              I 1 Reply Last reply Reply Quote 0
              • I
                innerbat @shariffy
                last edited by

                @shariffy The bug is not in f.lux, it's in the OS video driver. Open-sourcing would do nothing.

                lornaL 1 Reply Last reply Reply Quote 0
                • lornaL
                  lorna @innerbat
                  last edited by

                  This is correct. Thanks for the offer though.

                  @innerbat said:

                  @shariffy The bug is not in f.lux, it's in the OS video driver. Open-sourcing would do nothing.

                  @lorna

                  S 1 Reply Last reply Reply Quote 0
                  • S
                    shariffy @lorna
                    last edited by

                    @lorna Fair enough. Just a wild thought as this is both a long-standing issue and affecting quite a few users.

                    @innerbat I am aware. That said, I doubt Intel and Apple are falling over themselves to fix the issue. My thought was to research how f.lux could detect when the glitch will happen and (offer to) disable itself in those problematic cases. Research which could be easier with access to the code. But thanks for shooting down a benign suggestion within a minute of posting. :) Here's your sticker.

                    1 Reply Last reply Reply Quote 2
                    • I
                      iJudg3u
                      last edited by

                      just to give an update: I still have the same problem with OSX 10.11.4, Safari 9.1 and flux 36.6. Btw moving the mouse does prevent the artefacts from happening, but who wants to do that all the time in fullscreen right? ;)

                      1 Reply Last reply Reply Quote 0
                      • ?
                        A Former User
                        last edited by

                        @lorna any word from the intel guys on this? thanks!

                        1 Reply Last reply Reply Quote 0
                        • K
                          kaicrawf
                          last edited by

                          This post is deleted!
                          1 Reply Last reply Reply Quote 0
                          • ?
                            A Former User
                            last edited by A Former User

                            Hello! I'm having the same problem with artefacting, but in quicktime. If a spot in the video is pure white, and the video is playing with the cursor hidden, then white spots are not tinted, rather pure white. You can see when I start playing the video that the colors brighter on the GIF here.

                            MacBook Pro late 2013

                            1 Reply Last reply Reply Quote 1
                            • K
                              kypreonyc
                              last edited by

                              is anything being done about this or should i just uninstall f.lux?

                              1 Reply Last reply Reply Quote 0
                              • ?
                                A Former User @benfowler
                                last edited by

                                This used to be a deal breaker for me too but the workaround suggested by @benfowler is perfect and currently the most convenient way to avoid the issue.


                                There is 1 easy hack to avoid this issue.

                                Put the mouse curser onto the youtube / netflix video scroll bar at the bottom of the screen.
                                The issue seems to arise due to refresh rate at full screen video in safari.
                                Possibly to save battery, safari technology doesnt refresh areas of the screen that have pixels the dont change or similar.
                                But when you put the curser over this area, , it does seem to solve the issue .

                                O 1 Reply Last reply Reply Quote 0
                                • O
                                  Orico @A Former User
                                  last edited by

                                  @jonsnow When you do that, you are not really in full screen any more, because the video title appears so does the video timeline scroll bar, taking up 10% of the top and 10% of the bottom and adding distractions.

                                  1 Reply Last reply Reply Quote 0
                                  • ?
                                    A Former User
                                    last edited by

                                    I'm experiencing the same issues with fullscreen YouTube videos, I found if you zoom in (cmd, +) it removes/stops the artifacting so you don't need to keep your curser on the timeline blocking some of the video, it doesn't effect the video just makes the playback elements larger. No idea why this works or if it helps with netflix.

                                    1 Reply Last reply Reply Quote 0
                                    • W
                                      wiwi1019
                                      last edited by

                                      I'm on MacBook Air 2015 and have the exact same issue, and I found a simple solution:

                                      Use Firefox at night.

                                      1 Reply Last reply Reply Quote 0
                                      • L
                                        lbspht
                                        last edited by

                                        Hi all, it has to be issue in Safari. It appears in videos from various web pages. I can't believe Apple is doing nothing with this....

                                        1 Reply Last reply Reply Quote 0
                                        • A
                                          aimingforangels
                                          last edited by

                                          Hey all,
                                          Definitely not just a Safari issue. Having the same problem and can replicate the results in both Safari and Chrome. Admittedly, I have not tried Firefox.

                                          Running MBP 13" (Early 2015) with the Intel Iris 6100 chipset.
                                          Chrome ver. 53.0.2785.46 beta (64-bit)
                                          Safari ver. 9.1.2 (11601.7.7)
                                          f.lux ver. 37.3

                                          I've found that, for some reason, this issue doesn't occur when you crank the display scaling in System Preferences to the highest it will go. (1680x1050 on my set up).

                                          1 Reply Last reply Reply Quote 0
                                          • F
                                            fillep
                                            last edited by

                                            AAAAH I'm getting MAD!

                                            I've never had this problem before on my 15" retina MBP mid 2012, but it got stolen (in a fucking brutal home invasion robbery) and now I have a 13" mid 2015 retina MBP that I got from work and these artifacts are KILLING me.

                                            Those fucking bastards that stole my computer are now also responsible for all GPU problems in the world and I hope they die. Good news for everyone, they're both in custody so send all your fucking lawyers because these guys are gonna get some software engineering training, and hopefully when they get out they will FIX IT.

                                            1 Reply Last reply Reply Quote 0
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