This little add-on for Quicktime to show visible time code is actually pretty tough to find through a search engine, so I thought I’d leave a link here:
QT Timecode App
You can use QTTimeCode to add a timecode track to a movie, to extract the current timecode value from a movie, to extract the source information about a timecode track, and to toggle the display of a movie’s timecode track. 68k or PowerPC (or newer) machines running System 8.5 or later. PC with Intel Pentium or compatible processor. QuickTime 4.0 or later. CodeWarrior Pro 2 or later or Visual C++ 5.0 or later.