Thanks Robert Goodman for your answer.
Really i do not know that in which format they shoot video because that time and even now i am very new to camera and shoot by so many different people and now i want to edit it. But i know all are in Mini Dv tape. But we shoot with good camera and now i have only tapes, i do not have those camera anymore with me. I have one question that when i edit and capture video then need to get first another camera to play tape and then can capture. I have my simple camera SONY DCR-HC26 so if i put that tape in SONY DCR-HC26 and then play and capture video then do you think that i will loose the quality of video because before camera was good and now this camera SONY DCR-HC26 is very simple. Please do not mind i am very new for this so asking this type of question.