Hi. I have just transfered nearly 24 hours of SD mpg footage from my Sony NX70 onto computer. One clips is 13 hours long and the other is 6 hours 20 minutes. When I brought the video files into Vegas Pro, it took a long time to "process", approx 45 minutes, and on the bottom left corner of the screen, where I sometimes get "Rendering peaks for XXXX.m2ts" (The XXXX being the video file name) when bringing video files into Vegas, I get the following "Reading Closed Captioning from 20140323085628.mpg" the numbers being the file name of the video clip. What does this mean? It is the first time I have videoed in SD with my Sony NX70 and I have never had this message when bringing AVCHD footage into Vegas.There is no problem with the footage, I am just curious.