Problem export HD on Aperture on platform Yosemite

Question

I work my photos and my slide shows on Iphoto, then I pass on Aperture, to resume(to take back) slide shows to export them in HD to establish(constitute) on Imovie the movie with videos. I wanted to pass on Aperture altogether but as he(it) is abandoned(given up), I did not wish to put a lot on this software more profoundly. This system gave me satisfaction until recently.
In January, on the basis of a new library(bookcase) grouping(including) that my photos of a journey: 2000 photos and 950 restraints in 10 slide shows (I split to avoid problems further to the size of files), I realized the export of slide shows. Black screens substitute themselves for photos on more than 10 % of photos without any peculiarity ( the same camera).I made numerous tests by creating a new library(bookcase), by validating a sample of my original photos which are in screen black in a new treatment(processing) Iphoto. The problem is dice iphoto in the export 480 in 1080 but correct at the level of the IPhone export.
Identical result(profit) with MacBook Pro of 2014 (mine is of the end of 2009). I tried with another pimp which was still on Mavericks and there, my files are OK in all exports of Iphoto. The problem, this pimp had no Aperture and I cannot import him(it) because is asked the platform Yosemite.
The problem adorned me to be in the compatibility of Yosemite with Iphotos and can being Aperture.
In the Apple store of the Opera in bets they heard about it and indicates me that best is of detailed(retailed) my problem on the site and to wait for a return of Apple which will indicate to me if the correction is next. At the moment, I am blocked(surrounded).

Answer 1

There are two kinds of metadata involved when you consider  jpeg or other image files.
One is the file data. This is what the Finder shows. This tells you nothing about the contents of the file, just the File itself.
The problem with File metadata is that it can easily change as the file is moved from place to place or exported, e-mailed, uploaded etc.
Photographs have also got both Exif and IPTC metadata. The date and time that your camera snapped the Photograph is recorded in the Exif metadata. Regardless if what the file date says, this is the actual time recorded by the camera.
Photo applications like iPhoto, Aperture, Lightroom, Picasa, Photoshop etc get their date and time from the Exif metadata.
When you export from iPhoto to the Finder new file is created containing your Photo (and its Exif). The File date is - quite accurately - reported as the date of Export. However, the Photo Date doesn't change.
The problem is that the Finder doesn't work with Exif.
So, your photo has the correct date, and so does the file, but they are different things. To sort on the Photo date you'll need to use a photo app.