WHAT IS A BEST QUALITY QT FILE?

At the expense of causing some aggravation(!) I'm here going to try to simplify a request that has obviously got a bit tangled in another thread 'Quicktime Pixellation...etc" below, and not getting any positive answer.
*Please can one of the Top Users tell me the difference between a DV .mov file and a .dv file? I need to master in top quality QT.*
I've had the advice from Kirk that .mov is double the size of .dv because +'it separates the audio and video tracks'+ but, is that all?
I've found checking High Quality in the Visual Settings of Movie Properties substantially improves the apparent resolution on playback of a .dv file, ie no pixellation (which especially shows on titles). However if you want to Save Changes (ie High Quality) after viewing, QT makes a double file size .mov copy. Is this therefore better master quality? Or is it identical info with a 'visual trick' on playback?

In 'simple layman's' terms - how is a saved High Quality file likely to affect my computer or when exporting it into another format?
It won't have any effect whatsoever. As QTKirk previously pointed out, this is a a "playback" setting only. Since the data is not "rendered for display" as part of the actual conversion, the saved data goes directly from the file to the encoder unless you are making modifications which are applied prior to the transcoding of data.
can't decide what to do on this one (a DVD burnt from a 'standard' QT.dv comes out visually as clean as a whistle, but QTplayer of that file is v. poor)
To some extent you are comparing apples and oranges here. Both are based on the same data. However, in one case that data has been transcoded to MPEG2 before burning and is played back by an MPEG-2 player while in the other, the original data is being played back at its original data rate. Remember the answer you previously got regarding the demands on CPU and graphics card and the dropping of frames? Well, remember that the playback demands for an 8.5 mbps MPEG-2 FILE is about 30% that of your DV-25's 28.5 mbps (i.e., disregarding all other factors such as DIFFERING codec efficiency, complexity, etc). You may also note that Apple usually limits its QT full HD trailers to a range of 8 to 12 mbps at 24 fps for H.264/AAC content which is targeted for "newer" platforms as the best combination in terms of quality, bandwidth/storage space, and codec efficiency. Still these are matters that each individual must decide for his or her own self when creating their target output. It is a highly subjective decision making process with no right or wrong answers -- only what is "best" in terms of your current project. Virtually no two individuals see the same content in exactly the same light but rather in relation to their needs/desires of the moment.

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BTW, my file is just a wee slideshow of 98 jpgs.
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http://discussions.apple.com/thread.jspa?messageID=5248366&#5248366
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http://discussions.apple.com/thread.jspa?messageID=5611104&#5611104
Message was edited by: SDMacuser

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WHAT IS A BEST QUALITY QT FILE?

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