After emptying the trash, and then selecting the still to be updated via the Media/Photos/Show Photo Settings tab, the appropriate Ken Burns update window appears but the view screen is black and the still isn't updated.
The reason for this bug is that iMovie HD 6 discards the source image(s) of the imported clip when we empty the iMovie trash. In all previous versions of iMovie, that source image was retained in the Media folder, allowing us to later Update the rendered clip. That's no longer true. The image is being tossed out of the iMovie trash, making a future Update impossible. And because the source image is gone, iMovie displays nothing but black in the Preview window.
Workarounds: To reliably use a Ken Burns Update on a clip imported with the Ken Burns checkbox ON or OFF is to:
1) Never empty the iMovie trash.
2a) Re-import the photo with new Ken Burns settings, then delete the old clip.
2b) Copy the original still image to the iMovie project package's /Media folder. ( In fact, you can put ANY other JPG there and name it "image.jpg" and Ken Burns successfully updates THAT JPG image!!)
3) When you apply or update the Ken Burns effect, a clip is put to the iMovie trash. Move and keep ALL the clips Ken Burns has EVER put to the trash on the Clips pane (although this makes the Clips pane a mess). Keeping them there prevents the bug.
Thanks to Iain MacDonald, Al Seper and Karl Petersen for spotting this bug.
...The reason for the bug is that iMovie puts the original imported image (lets's call it here image.jpg) to the trash when it really should put some intermediate video clip to the trash instead. iMovie also reports the trash contents in a misleading way.
For the terminally interested: from a fresh start the bug goes like this:
- Import "image.jpg" to iMovie with Ken Burns ON. This creates three files to the Media folder:
image.jpg = a bit for bit copy of the imported JPG image (I had a 1.9MB JPG). iMovie creates it with Ken Burns OFF, too.
Still 01.dv = the original image converted to a single-frame DV clip (144KB PAL). iMovie creates it with Ken Burns OFF, too.
Clip 01.dv = the video clip that Ken Burns created (a 5 second PAL clip was 17.1 MB in my example). iMovie creates it only with Ken Burns ON.
...at the same time a clip called "image" is moved to the iMovie trash. Notice that its size is 140KB (PAL). Hmm... but there is no such file in the Media folder! I guess iMovie erroneusly referes here to the original image.jpg which is 1.9MB! I think iMovie really should report a file named "Still 01.dv" to be in the trash instead!
- Then empty the trash: Only the "Clip 01.dv" is preserved, and subsequent Ken Burns updates fail because the original "image.jpg" was erroneusly trashed. Ken Burns needs the original JPG to render a new video clip. The JPG is missing so the update fails with a black screen.
You can fix the problem by putting the original "image.jpg" to the Media folder (no need to relaunch iMovie)! In fact, you can put ANY other JPG there and name it "image.jpg" and Ken Burns successfully updates THAT JPG image!!
The fix 3 (move and keep all the clips Ken Burns has put to the trash on the Clips pane) works only because the intermediate clips protect the original JPG to be put in the trash. If a SINGLE intermediate Ken Burns clip is trashed, boom, the JPG goes with it.
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Originariamente Scritto da avrobay
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