To play video formats %S, you need to install extra Microsoft software, see https://support.mozilla.org/kb/fix-video-audio-problems-firefox-windows
ដើម្បីចាក់ទ្រង់ទ្រាយវីដេអូ %S អ្នកត្រូវតំឡើងសូហ្វវែរ Microsoft បន្ថែម មើល https://support.mozilla.org/kb/fix-video-audio-problems-firefox-windows