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