H.264 Encoding & QuickTime

Hi All:
    In Premiere Pro CS4, in the Export Setting, if I choose H.264 format, and Preset as Custom, I can not play in iPod Touch.  I thought as long as the format is QuickTime (which I think H.264 is Quick Time,) I can play in iPod Touch.  Please advice.
   Another question, if I choose H.264 as Format, and Apple iPod Video Large as Preset, if I play on computer, I see the pictures shakes a lot (looks like the frames are overalapped.)  If play in iPod, it’s no problem at all.  Please advise if I did something wrong.  I haven’t tried Preset as Apple iPod Video Small though…
   Last question, sorry for asking a lot., if I simply choose Format as QuickTime, how come I can not play in iPod Touch?  I have to choose H.264 as Format then Apple iPod Video Large as Preset in order to work.
   Thanks,
   Franco

(which I think H.264 is Quick Time,)
As a point of interest, Quicktime is not a video format, it's a file format.  A Quicktime file can have inside many different kinds of video.  Yes, H.264 is one format the Quicktime file can hold, but one is not the other.  Care should be taken to understand the difference.
Think of Quicktime as the cup, and the video inside as the liquid.  The cup can hold milk, juice, soda, water, etc., just like the Quicktime file can hold Uncompressed video, DV video, or H.264 video.  It's all the same cup, but with different things inside.  But you have to remember that the cup and the liquid are two different things, because as there are different kinds of liquid (video formats), there are also different kinds of cups (file formats).  For example, AVI, MKV and MXF are all different kinds of cups (file formats), just like Quicktime, and any one of them can hold many different kinds of liquids (video formats).
The point here is that you can put an H.264 video into an AVI file, or an MXF file, or a Quicktime file.  So just because you have an H.264 video, you should not assume its a Quicktime file.  Make sense?

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