2976 Views 10 Replies Latest reply: Aug 21, 2009 2:34 PM by marasat
Ok you too.
so I construct a perfectly focused slideshow in idvd,
This is the iPhoto forum, the iDVD forum is here
the photos are in jpeg format.
JPEG is a heavily compressed format. DVD is a very heavily compressed format. So you’re putting compressed data into a heavily compressed format. A lot of material is chucked away in the process, so there are bound to be consequences.
I enhance each photo ( sharpness etc)
Depending on what you use to edit, you will be bringing in at least one level of generational loss to the process.
You’ll get best results using a lossless format for the pics - tiff for example.
I've not used the Magic iDVD option so don't know what it does with the photos you provide it but have create many, many iDVD slideshow projects with photos from iPhoto and have had extremely good results.
I create an iDVD project, add a slideshow, move the photos I want (cropped to 4:3 size ratio beforehand) to the slideshow, add music and save the project as a disk image (this separates encoding problems from burning problems). I mount and play the disk image with DVD Player and once I'm satisfied all is well I burn the disk image to disk using Disk Utility or Toast as the slowest burn speed possible using top quality media, Verbatium, Maxell or Taiyo Yuden DVD-R, which are the most recommended in these forums.
Since I'm not familiar with Magic iDVD tell me a couple of things: are you creating the slideshow in iPhoto or just making the still photos available to iDVD by placing them in an album for export to iDVD?
If you're creating the slideshow in iPhoto and use the Ken Burns effect the image size should be a minimum of 1440 x 1080 pixels in size to help keep the image sharp during the zooming of the KB effect. The output resolution of DVDs is 720 x 540 - a DVD standard and not iDVD issue. The slideshow is converted to a Quicktime movie format for use in iDVD. Then iDVD encodes the QT file again in its process. That's a lot of compression from the original source files.
For what it's worth here are some tips for preparing photos for use in iDVD that might help:
TIP: For insurance against the iPhoto database corruption that many users have experienced I recommend making a backup copy of the Library6.iPhoto (iPhoto.Library for iPhoto 5 and earlier versions) database file and keep it current. If problems crop up where iPhoto suddenly can't see any photos or thinks there are no photos in the library, replacing the working Library6.iPhoto file with the backup will often get the library back. By keeping it current I mean backup after each import and/or any serious editing or work on books, slideshows, calendars, cards, etc. That insures that if a problem pops up and you do need to replace the database file, you'll retain all those efforts. It doesn't take long to make the backup and it's good insurance.
I've created an Automator workflow application (requires Tiger or later), iPhoto dB File Backup, that will copy the selected Library6.iPhoto file from your iPhoto Library folder to the Pictures folder, replacing any previous version of it. There are versions that are compatible with iPhoto 5, 6, 7 and 8 libraries and Tiger and Leopard. Just put the application in the Dock and click on it whenever you want to backup the dB file. iPhoto does not have to be closed to run the application, just idle. You can download it at Toad's Cellar. Be sure to read the Read Me pdf file.
NOTE: The new rebuild option in iPhoto 09 (v. 8.0.2), Rebuild the iPhoto Library Database from automatic backup" makes this tip obsolete.
What size are the photos, in pixels, that you're adding to iDVD to use? Are they larger than 640 x 480? I've made a lot of iDVD slideshows and I've had great success with the final project, even when played on a 50" plasma TV. However, they are not as sharp as when displayed on my Mac with iPhoto or other photo display applications. It's just the nature of the beast.
By blurry do you mean pixelated or blurry in the photographic sense. I did a quick search of the iDVD forum and got these results: http://discussions.apple.com/search.jspa?threadID=&q=blurry&objID=c128&dateRange =last90days&userID=&numResults=30. You might refine the search to see if you can narrow down the topics.
on average about 3000x2000.blurry in the sense of sharp focus in iDVD, out of focus once burnt to dvd and played on a TV.
I followed your steps for creating a new new project etc.
pardon my ignorance but once I saved the project as a disk image it then appears as an .img file on my desktop.
you mentioned you then mount and play to cfm quality.whewn I double click on the file it comes up with Video_TS and Audio T_S. Thats where I get lost!
Have I followed the steps correctly to get to this stage? The DVD project rendered and finalised ok.Really appreciate your input so far on this.