Talking Head FLV files created with On2 VP6 codec do not appear in output

(TechNote) Macromedia Flash 8 comes packaged with 2 codecs to convert movies in Flash into FLV format. These codecs are Sorenson Spark and On2 VP6. Using the On2 VP6 codec results in the FLV file not appearing in the compiled output from Breeze Presenter, only the sound plays.