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.
Most DVD Players support playing DL DVD-R, DVDÂ±R/RW, DVD, CD-R/RW, MP3, JPEG, however different plays have their special features. You need to introduce us what DVD player you have and then we can show you the detailed video formats.
It depends upon you DVD player. If you have simple DVD player then it will play mpeg2 format which are in the .vob files and ac3 which is audio format. It should also play the mpeg1 format which is usually in .dat or called video cds. The new DVD players also support xvid or divx codecs.