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Firefox 35.0 launches with new Hello video chat and MP4 playback on Mac - Gear | siliconrepublic.com - Ireland's Technology News Service
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Can't download any video file [webm, mov, mp4, etc] · Issue #3703 · mozilla-mobile/fenix · GitHub
2386] mp4 videos are translated offscreen in fullscreen after scrolling (4K Stick/Stick gen 2) · Issue #2540 · mozilla-mobile/firefox-tv · GitHub
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MP4 files won't work in Firefox | Firefox Support Forum | Mozilla Support
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The option to open a mp4 file with Firefox is no longer available since changed to 64 bit, how to fix | Firefox Support Forum | Mozilla Support
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How to enable MSE & H.264 support on YouTube for Firefox right now - gHacks Tech News
