Adding h264ify addon to Firefox slowes down full screen 4K video playing












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Full screen 4K video playing on an external 4K TV was butter smooth on my Thinkpad X1 Extreme. However, the fan was noisy. So I installed this plugin. Then I could not watch 4K video. I uninstalled this plugin and watching the same videos no longer smooth. I uninstalled and reinstalled Firefox but this issue remains. Could you please help?










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    1















    Full screen 4K video playing on an external 4K TV was butter smooth on my Thinkpad X1 Extreme. However, the fan was noisy. So I installed this plugin. Then I could not watch 4K video. I uninstalled this plugin and watching the same videos no longer smooth. I uninstalled and reinstalled Firefox but this issue remains. Could you please help?










    share|improve this question

























      1












      1








      1








      Full screen 4K video playing on an external 4K TV was butter smooth on my Thinkpad X1 Extreme. However, the fan was noisy. So I installed this plugin. Then I could not watch 4K video. I uninstalled this plugin and watching the same videos no longer smooth. I uninstalled and reinstalled Firefox but this issue remains. Could you please help?










      share|improve this question














      Full screen 4K video playing on an external 4K TV was butter smooth on my Thinkpad X1 Extreme. However, the fan was noisy. So I installed this plugin. Then I could not watch 4K video. I uninstalled this plugin and watching the same videos no longer smooth. I uninstalled and reinstalled Firefox but this issue remains. Could you please help?







      firefox h264






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      asked Oct 29 '18 at 14:06









      lovedrinkinglovedrinking

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          First, let me point out, that there is no Hardware acceleration for video in Firefox for Linux at all, so there is no point to install any add-on offering such features.



          Second, its not obvious that changes made add-on you installed in your Firefox setting, so most easy solution will be to reset your profile.



          You can go at about:support address in adressbar and click on Refresh Firefox button which should reset your preferences to default and revert any pref changes you or add-on made.






          share|improve this answer































            0














            You don't need h264fy for Firefox. Rather set media.mediasource.webm.enabled to false in about:config



            More info: https://news.ycombinator.com/item?id=9331156






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              2 Answers
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              2 Answers
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              active

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              active

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              0














              First, let me point out, that there is no Hardware acceleration for video in Firefox for Linux at all, so there is no point to install any add-on offering such features.



              Second, its not obvious that changes made add-on you installed in your Firefox setting, so most easy solution will be to reset your profile.



              You can go at about:support address in adressbar and click on Refresh Firefox button which should reset your preferences to default and revert any pref changes you or add-on made.






              share|improve this answer




























                0














                First, let me point out, that there is no Hardware acceleration for video in Firefox for Linux at all, so there is no point to install any add-on offering such features.



                Second, its not obvious that changes made add-on you installed in your Firefox setting, so most easy solution will be to reset your profile.



                You can go at about:support address in adressbar and click on Refresh Firefox button which should reset your preferences to default and revert any pref changes you or add-on made.






                share|improve this answer


























                  0












                  0








                  0







                  First, let me point out, that there is no Hardware acceleration for video in Firefox for Linux at all, so there is no point to install any add-on offering such features.



                  Second, its not obvious that changes made add-on you installed in your Firefox setting, so most easy solution will be to reset your profile.



                  You can go at about:support address in adressbar and click on Refresh Firefox button which should reset your preferences to default and revert any pref changes you or add-on made.






                  share|improve this answer













                  First, let me point out, that there is no Hardware acceleration for video in Firefox for Linux at all, so there is no point to install any add-on offering such features.



                  Second, its not obvious that changes made add-on you installed in your Firefox setting, so most easy solution will be to reset your profile.



                  You can go at about:support address in adressbar and click on Refresh Firefox button which should reset your preferences to default and revert any pref changes you or add-on made.







                  share|improve this answer












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                  answered Nov 1 '18 at 13:12









                  Kuribo KutsuKuribo Kutsu

                  20619




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                      0














                      You don't need h264fy for Firefox. Rather set media.mediasource.webm.enabled to false in about:config



                      More info: https://news.ycombinator.com/item?id=9331156






                      share|improve this answer






























                        0














                        You don't need h264fy for Firefox. Rather set media.mediasource.webm.enabled to false in about:config



                        More info: https://news.ycombinator.com/item?id=9331156






                        share|improve this answer




























                          0












                          0








                          0







                          You don't need h264fy for Firefox. Rather set media.mediasource.webm.enabled to false in about:config



                          More info: https://news.ycombinator.com/item?id=9331156






                          share|improve this answer















                          You don't need h264fy for Firefox. Rather set media.mediasource.webm.enabled to false in about:config



                          More info: https://news.ycombinator.com/item?id=9331156







                          share|improve this answer














                          share|improve this answer



                          share|improve this answer








                          edited Dec 29 '18 at 9:50









                          mature

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                          1,726624










                          answered Dec 28 '18 at 21:25









                          develCuydevelCuy

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                          1054






























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