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.
Best Answer: All DVD players play MPEG-1 and MPEG-2 video and AC-3 or PCM (eg, WAV) audio... virtually all of them will also play MPEG Layer 2 audio. HOWEVER, it's not guaranteed that you can simply drop an MPEG-2 file on a DVD-R and have your player handle it. Some will, but not all of them. The formal DVD-Video format is what every DVD player plays, and that's something you can generate only using a DVD Authoring program.