In order to remove Video Control Adware Firefox Addon completely you will need to refresh Firefox back to its initial settings. It does this by removing all add-ons and personalized configuration Author: xbook.info The ability to write files from an add-on was present in Firefox but does not exists in Chrome nor Firefox (>= 57). Writing files from the add-on is necessary when downloading streams using protocols HLS and DASH. It contains a build of the very popular ffmpeg video converter application. This is required by the add-on to create audio+video. Firefox can play the WAV container format .wav,.wave file types) containing uncompressed audio in PCM at 8 or 16 bits per sample. Vorbis audio, Opus audio, Theora video, and VP8 video are free audio/video compression formats for use without patent restrictions. Download Video Downloader professional for Firefox. - download and save videos embedded into a website to your hard disk - add youtube. The most complete Web video downloader! The popular Video DownloadHelper Firefox extension is now available for Chrome. Main features. Wer das Browser-Add-on "Video DownloadHelper" für Firefox und Chrome nutzt, benötigt für einige Aktionen eine Zusatz-Software vom.