A test of a new intervention or treatment on people for. detecting. -Tolerability. -Safety. -Efficacy. A Clinical trial is defined as a prospective study. comparing the effect and value of intervention. (s) against a control in human beings.
In fact, whether the DVD players play AVI videos or not, it depends on the DVD player model, the AVI video codec or the AVI video resolution/size: 1  Most DVD players only accept MPEG-2 in standard VOBs. 2  Though some newer DVD players can play AVI files, it only plays AVI which is encoded with DivX. However, AVI is a container video format which may encoded with different video codecs like DivX, Xvid, MPEG-4, H.263, WMV, MPEG-1 and etc.
How to Play VOB Files on Windows Media Player A VOB (DVD Video Object) file is a file container format that DVDs use. A VOB file contains the actual movie from a DVD and its audio and streaming data that allows a user to scroll through the video. VOB files are essential to DVDs and can be taken from a disk in order to place a copy of a movie on a user's computer.