Q: QuickTime 7 bug on my machine OS X Yosemite

Have it ever happened to you? How did you solve the issue?

I, for one, am unsure as to what actually is your issue here—how QT 7 is working or how to uninstall the the QT 7 GUI.

I tried to uninstall and reinstall QuickTime 7.6.6 several times but obtained no result.

What is this supposed to mean? Are you trying to remove either or both the QT X and/or the QT 7 structures embedded in the operating system? Or are you saying that you cannot drag 'n drop the QT 7 v7.6.6 Player app from the Utilities folder, trash it, or delete it? Please be more specific in describing your actions, what is happening, and what you expect to happen.

Both QT X v10.4 and QT 7 v7.6.6 (special dual 32-/64-bit variant) can be simultaneously installed under Yosemite and, while the Technical Requirements page for the inqScribe web site is non-specific as to what version "QuickTime required" actually means, the Yosemite FAQ indicates you must re-install QT 7 Pro after the OS upgrade if you wish to subtitle movies AND you have to make sure your subtitled movies in QT 7 and not the default QT X player. Have you done/are you doing all of these things?

with my previous laptops I have never had problems with the videos I subtitled with Inqscribe: I exported the movies subtitled with Inscribe as mov files and run them with QT 7, then seeing the subtitles there where I set them to with Inqscribe.

But now the QT 7 I have installed on my new macbook behaves strangely with those subtitles, basically not diplaying them.

Since you did not answer any of my questions or describe your workflow IN DETAIL, I downloaded  the app and applied for a 14-day test key. My test export file worked fine on my system under Yosemite. At this point you can either answer the questions  ask, pose a copy of your export file, or describe your actions in detail. or create a screen recording of your actions so I can analyze your workflow.

What I wanted to know from this community is if anyone recognizes this issue I tried to describe, and if she/he have reached a solution.

I have QT 7 v7.6.6 (the Snow Leopard thru Yosemite version) installed on my system, it is keyed "Pro" use, it correctly exports a test A/V data to an MOV file with the added text track, it opens correctly in the QT 7 player, and it displays the text underneath the video using the default settings. These are the same things I need to find out about your system and test file.

But now the QT 7 I have installed on my new macbook behaves strangely with those subtitles, basically not diplaying them.

1. Okay, lets start here. How are you opening the exported file? Describe in detail or confirm by showing an captured image of the "Inspector" Window.
2. If you are actually using QT 7 Pro player for playback, then confirm that your exported file contains the text track using a "Properties" Window captured image.
3. If text track is present then confirm specific contents of the text track with a screen capture image of the text track contents.
4. Or post a copy of an exported file for me to examine.

It was said to me that occasionally users will report errors solved by simply reinstalling QT 7: I tried it but did not solve the problem.

The FAQs list several requirements—the most important being:

1. You must open the file the QT 7 Player because the QT X player will not display the text track nor recognize the QT 7 defined text display area. And, since the default MOV player under Yosemite is QT X (unless you have changed the default opening app for the MOV file class), then how you open your exported file becomes significant.
2. If the QT 7 Player is not keyed (or re-keyed) for "Pro" use then QT 7 cannot export the text track created by inqScribe.

I have never subtitled movies with QT, I have always done it with Inqscribe;

There are several ways to create a time coded text track to display su-titles or comments within or outside of you video display area. InqScribe is just one, relatively easy way to do so. (E.g., you could do this manually with just QT 7 Pro and TextEdit if you wished.) At this point I suspect that either your playback workflow may be at fault here. If not, the learning if a text track was actually created and/or if it is properly formatted would be next. By answering my questions and/or posting captured screen images or a sample exported file would be the easiest way to test the most obvious possible issues.

hi!

I had not encountered this problem before (and I've created subtitles for QT movies using .txt transcripts for many years!) - but in the span of 3 weeks - videos that previously had working subtitles do exactly as you say.  None of Jon Walker's comments above are helpful, nor I think really understand the problem.  In fact, the problem is not just in videos that already had subtitles working, but when opening a formatted transcript from .txt (with QTtext "preface") in QT7, it only interprets some of the QT text correctly.  

Baruzzom - since you posted in Jan 2015, have you had a breakthru?  Or found alternative techs?

Thanks!

Update to my post yesterday.

I learned that the issue might be on the new update from the iOS.  I have Yosemite 10.10.4.  One of my colleagues has 10.10.3 - and the subtitles still show correctly on QT7 on her computer.   So, for now, we've displayed the videos with subtitles on her computer.

Another temporary solution I found, and I don't have any clues as to why this works is that I've embedded my subtitled movies into a ppt - and somehow, that preserves the location of the subtitles, the size of the text, and the time-stamps (from the QTtext file). 

Hope that helps someone.  And, I hope that apple fixes what they unfixed with 10.10.4.