With the standard encoder, you also need to use a high bit-rate in the encoder. But the high bit-rate also will end in a higher file size. The movies incorporated, will certainly make a sea change and can ring a bell along with your web site guests. Now go to the Audio tab, Select Codec from the list of supplied codecs corresponding to AAC or any other encoder you need. Select Bitrate or Quality options and different small choices offered, as per the requirement. You also can present another audio source other than the one kind video.