rendered (converted) to an mpeg2 format with one hour of tape (13 gigs) producing an mpeg2 file of about 2 gigs. Thus, two hours can fit on one DVD. The rendering software is usually a video editor which allows you to remove parts of the video, and, perhaps, add other video clips. There is no need to wait for Blue Ray.
I have a Sony DCR-TRV140 and 25+ tapes of our 3 year old. Will the resolution the unit is capable of recording be better in Blue-Ray or should I just record to WMV and be able to place a 60 minute tape on a 4.7 GB DVD? THe NSTC format or DVI produces a file of 13 GB, which obviously won't fit on a 4.7 GB DVD. Record onto an external hard drive in high resolution DVI and wait until Blue Ray becomes available for each 13 GB file?