while downloading video (mpeg / avi/ mov etc) I was able to view the clip while the clip was downingloading by clicking on the preview icon - windows media player or the dell dvd player would load and play the video clip, now all of a sudden this feature doesn't work, does anyone know why ????????????

thanks

the video you may be downloading may require a codec (one that isnt in windows already) which sometimes doesnt let you preview the file that you are downloading.

Some types of files will need certain pieces of the file to preview it. Such as AVI files, which usually need the first and the last chunks to preview.