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.
The Funai ZV427FX4 DVD recorder/VCR combo can record in the DVD-R and DVD-RW disc format, which is compatible for playback on most DVD players. Of course, you can still record and play back in VHS. You can also dub from VHS-to-DVD or DVD-to-VHS, provided the content being dubbed is not copy-protected.