In keynote using quicktime... transitions do not dissolve

[pharber]

I have a quicktime movie with music, that was actually stills that were put together with dissolves between images. I want to put it into a Keynote presentation, and when I do the transitions do not dissolve
any longer... Otherwise it plays ok.
It is a .mov. I tried to convert it to an mp4, but that wasn't the answer

[Cornucopia]

Quicktime (the fileformat & the pro v. app) itself has had features that went beyond what most MM containers usually have provided.

This has changed in recent years:
1. QT the app (and its underlying API/code-subsytem), in the form that we have come to love/hate, has been deprecated and superseded by AVFoundation/AVKit & QT X. In doing so, even though it was meant to streamline & supposedly facilitate better uptake & usage, a number of features were dropped. Many of those dealt with the extra functions available to only the QT format.

2. In the aftermath of surprise about #1, Apple assured the public that the QT fileformat would remain the same. They kind of LIED (or rather, only told part of the story). The same features that the app no longer supports, the fileformat support for them has now been deprecated also. This means that, not only can you not make NEW apps using the NEW APIs to support the format and the full range of former features, but you cannot even, using different coding tools, create NEW apps to continue to generate those features, because references to those features are being removed (except for minor decoding-to-convert-to-simple-AV-format uses), so there will soon be no clear documentation on HOW to properly generate those features. Even things as common as MIDI & Still Image got the axe (in addition to Sprites, wired button actions, VR, etc). So you can't even create NEW/updated versions of OLD platform apps.

The other thing is: even if QT itself (v.7, I'm guessing - not v.X) still supports transitions & compositing modes & masks (allowing one to store a dissolve within the fileformat), newer apps like Keynote probably won't be able to correctly parse & display it.

This will become MORE and MORE common.

Is there any app where you DO see this working correctly at all (other than within QT v.7 in playback)? It may be that you will need to re-create the dissolve in an NLE and render/export to a different video format. This will, of course, mostly defeat the size benefit enjoyed by stills+audio/music.

Or, you could do a "full-screen QT v.7 playback -> display adapter pipeline -> capture by another PC+encode-to-video" method...

Scott