Three DIFFERENT reasons then. That calls for three different outputs.
For the Web, H.264...there are presets in Compressor, but compressing is a dark art, so getting things to look their best can be tricky. People earn livings only compressing. So learn how to do it, or go with presets. I'm still learning, so I can't make lots of pointers. I use presets.
Projector...played from what?
DVD...use Compressor and the DVD presets. Know that it will be SD and not HD anymore...so quality will be less. But for BEST looking DVDs, having a professional author them will get you better results.
Shane
GETTING ORGANIZED WITH FINAL CUT PRO DVD...don't miss it.
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Little Frog in High Def