Another important aspect to take into account regarding AVI files is that audio data occupies much more space than video one. This way, it is very important that your movie's audio data is carefully compressed as well as video data is, or otherwise it could occupy much more space than you would have thought.

If you do not know which audio codec to choose for your audio AVI file, MPEG Layer 3 is one of most advisable ones. This codec would allow you to compress your audio file converting it into a much smaller file and without loosing much of its quality, although it will not be exactly same than it was before being compressed. There also are other good codecs, but due to these files high size, all of them would cause your movie to loose some of its audio quality.

In order to optimize your video or movie and avoid as many of these web- movie related problems, there are a few things you should have into account. First of all, you should compress your video using an appropriate technology, such as, for example, Real Video, or any other which was meant for this specific purpose.

There are several different compression technologies which were developed in order to help movie makers uploading and transferring their videos over web. In order to choose a good compression technology, you should check it allows you to compress your video without causing it to loose much of its original quality. You should always consider that maybe it is preferable that your video is transferred less quickly and looses not so much quality than it is transferred very fast and looses an important amount of data.