can someone kindly tell me why the useful add on app for firefox browser, "Youtube video and mp3 downloader 2.3" and "Best video downloader 2" in my "extensions" under firefox's"tools" "add ons" is no longer available in youtube website? how to reactivate? as l do see them enabled under "add ons manager" . whenever l accessed youtube l would see their icons, which l could click on to download educational videos and watch later.
and why is it when l use quicktime to capture "full screen" the video is ~2x greater in size compared to the firefox youtube app?
thanks
and why is it when l use quicktime to capture "full screen" the video is ~2x greater in size compared to the firefox youtube app?
thanks