Jon Walker,
I appreciate the effort you put in your post, which I found informative and helpful. Just to be clear, it was never my intention for anyone to put Deborah's experience to the test and delete any app or program, especially one that has been paid for!
Not to personalize this as every user's experience is unique, I believe I am one that others can relate to. Just to break it down:
Experienced Mac user for several years
Need-to-know basis for learning video formats and editing (learned just enough to make things play)
Pre-Mav:
Installed Perian, Flip4Mac, ffmpeg
Played most videos using QT X
Played the few that didn't with VLC
If the rare conversion was necessary, MPEG Streamclip
To be brutally honest, I care nothing for understanding the logic and reasonings of Apple's decisions (as of late, especially), and leave that discussion for the more intellectual of our community.
The search is for the easiest and quickest work around fix, allowing both:
1. QT to stop converting automatically nearly every video opened, and
2. Return previewing functionality via Quicklook (spacebar play), as well as playing the video in the preview pane of Finder windows
3. Very basic video editing functions, like those found in QT (clip, split, etc.) - but easily given up for the first two goals
From your post and related discussion, it appears the options thus far are:
1. Use the older QT 7 (32-bit) for playback, no need for installation of any additional apps/codecs than already was installed, understanding the possibility of some performance issues (slow, laggy, choppy playback, delay, unresponsive/crashing of app); no Quicklook functionality or Finder preview
2. Convert all videos, whether in batches prior to playback or as a single conversion on a needed basis, understanding the possibility for converted formats inflating to a minimal increase in size, to more than double the original size (depending on containers and such); Quicklook/Finder previewing functionality restored for converted videos; extremely time- and CPU-resource demanding
3. Reassign all video formats to be played strictly using VLC, MPEG Streamclip, and possibly other 3rd-party apps, or a combination thereof; no Finder/Quicklook functionality
4. Purchase a key for QT 7 Pro; practically no forced conversion and playback functionality restored with no real added performance issues, plus more video editing options; understanding monetary cost and possible discontinuing support, Finder/Preview functionality unknown?
5. Revert the OS to a state prior to updating to Maverick OS using a saved previous session backed-up via Time Machine, requiring backing-up of the system prior to the update
Are those the main options? Depending on whether or not I can restore Finder/Quicklook previewing functionality with a QT 7 Pro key, I have what I need to decide my next step.
I apologize for the long post... in my attempt to help others in a similar situation as myself, and trying to do so typing on an iPhone, I might have produced a hard read.
Thank you, Jon (and John), and anyone else for your time!
Michael