Millisecond Forums

I have an experiment programmed which shows 4 minute video clips which we had planned to run online using inquisits web hosting. Unfortunately it appears that the files sizes are to large even after compression (if we compress much more the video will be so low quality as to be pointless). As such I am wondering if it is possible to get inquisit to stream the video during the scripts run from a site like youtube or similar as this would by pass those to some extent (we might instead get lag in playback if the video takes forever to load). Any way to do this or other ideas on how people have dealt with this issue in the past? Thanks.