324 Appendix PREPARING FOR LINEAR ONLINE and all picture and sync sound. Let me say this again: If you are going to a linear online, every source must have timecode. It is tempting to import just that one cut from the CD music library or pop in just those three shots from the VHS dub. But you must be sure to go back and match by eye or ear with a timecoded origi- nal source before you make the EDL. This is a clear example of GIGO--garbage in (sources without timecode) and garbage out (a list that cannot really be assembled). Preparing Sound There is one exception to the timecode rule: when the audio captured into Avid will actually be used as a source in the online (or the final mix for a film). It is becoming more common for the first edit to lay down a digital cut of the audio, low-resolution video, and then cut with original video sources the rest of the day. This assumes no changes in the online that will affect sync or length; of course, this is something you may have to mention repeatedly! In this case, you are working from the timecode of the digital cut, which should match the timecode of the master