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when i opn the you tube or any kind of video clip in the mozilla firefox the video clip is shaking completely how to solve a problem

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when i opn the you tube or any kind of video clip in the mozilla firefox the video clip is shaking completely how to solve a problem

when i opn the you tube or any kind of video clip in the mozilla firefox the video clip is shaking completely how to solve a problem

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Start Firefox in Diagnose Firefox issues using Troubleshoot Mode to check if one of the extensions is causing the problem (switch to the DEFAULT theme: Firefox (Tools) > Add-ons > Appearance/Themes).