These big reference files are convenient to a point…if it’s short and has few layers. Lots of things can clog the reading of a ref clip during compression. There is a ton of seeking around to put the pieces of the ref clip back together for the encoder. Usually, on a length more than 20 minutes or so you are better off ouptting the program to tape and redigitizing from the master to a single file. A reference clip from that new digitized clip will make it thgought the encoder much easier.
A real pain in the keester when your show is amost 2 hours…that’s 2 hours to tape and 2 hours back in, but you will not have those problems with the encoder.
Another option is to save out of AVID to a compressed codec of some sort to a self contained clip (still quite large) and run that clip through the encoder.
If you will be making these DVDs from long program material on a regular basis, the I recommend one of the PCI card realtime encoders from Wired or other…some of the cheaper PC video cards support realtime MPEG2 encoding from your master tape. I would find one of those…chances are you will make a tape master anyway, so after you make it just send it through the encoder realtime and 2 hours later you have your MPEG2.
But big ref clips from a long, multi-layered program are a bear.
One last thought…have you done a mixdown of the video tracks? In the AVID I used to do a mixdown to two new tracks and then delete all the other audio, this made for a neater ref clip.
Rich Rubasch
Tilt Media