Problems with H.264 codecs in firefox · Issue #325 · collab-project/videojs-record · GitHub
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Microsoft's HTML5 Add-on To Support H.264 On Chrome & Firefox!
Firefox add-on that allows MP3 conversion for free, video conversion, audio extraction from video, video and audio combining, multiple videos combined into one, maximum volume adjustment, video resolution change, video rotation, sound
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Certain MP4 Videos Breaking - Showing No Codec Error, or Black Screen (Has Screenshots) : r/firefox
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