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Double layer capacity

In idvd when I change my preferences to double layer DVD the capacity for my project is listed a 7.4 gig . The disks have a capacity of 8.5 gig. Is the limitation my burner or is some of the capacuty used in formating etc.

iMac, OS X Mavericks (10.9.1), 3.06 GHZ Core i3

Posted on Mar 3, 2014 7:57 AM

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2 replies

Mar 3, 2014 9:56 AM in response to minnella

Ignore that estimate/ iDVD cares not about file size but about length.


iDVD: Burning Double-Layer DVDs

http://support.apple.com/kb/HT2937


iDVD encoding settings:


http://support.apple.com/kb/HT1502?viewlocale=en_US


Short version:


Best Performance is for videos of up to 60 minutes


Best Quality is for videos of up to 120 minutes


Professional Quality is also for up to 120 minutes but even higher quality (and takes much longer)


That was for single-layer DVDs. Double these numbers for dual-layer DVDs.


Professional Quality: The Professional Quality option uses advanced two-pass technology to encode your video (The first pass determines which parts of the movie can be given greater compresson without quality loss and which parts can’t. The second pass then encodes those different parts accordingly) , resulting in the best quality of video possible on your burned DVD. You can select this option regardless of your project’s duration (up to 2 hours of video for a single-layer disc and 4 hours for a double-layer disc). Because Professional Quality encoding is time-consuming (requiring about twice as much time to encode a project as the High Quality option, for example) choose it only if you are not concerned about the time taken.


In both cases the maximum length includes titles, transitions and effects etc. Allow about 15 minutes for these.


You can use the amount of video in your project as a rough determination of which method to choose. If your project has an hour or less of video (for a single-layer disc), choose Best Performance. If it has between 1 and 2 hours of video (for a single-layer disc), choose High Quality. If you want the best possible encoding quality for projects that are up to 2 hours (for a single-layer disc), choose Professional Quality. This option takes about twice as long as the High Quality option, so select it only if time is not an issue for you.

Use the Capacity meter in the Project Info window (choose Project > Project Info) to determine how many minutes of video your project contains.

NOTE: With the Best Performance setting, you can turn background encoding off by choosing Advanced > “Encode in Background.” The checkmark is removed to show it’s no longer selected. Turning off background encoding can help performance if your system seems sluggish.


And whilst checking these settings in iDVD Preferences, make sure that the settings for NTSC/PAL and DV/DV Widescreen are also what you want.


http://support.apple.com/kb/HT1502?viewlocale=en_US

Mar 3, 2014 12:21 PM in response to minnella

Your terminology is a little confusing. Your project has a size, not a capacity. The DVD media has a capacity. 7.4-7.7GB for a dual layer DVD sounds about right in iDVD,


iDVD is reporting the maximum available size for your project - video, stills, template, menus, etc. Some space required for disk formatting also. 7.4-7.7GB available on a dual layer DVD sounds about right in iDVD.


But the capacity in GB is not the right consideration for how much video can fit on the DVD (single or dual layer). Length in time of the video is more important. You can fit up to about 4 hours of video on dual-layer DVD media (less depending on the depth of your menus & if you place any stills in your DVD project). The input file size of the video is not relevant. iDVD will take care of the encoding and compression required to fit your video on the DVD.

Double layer capacity

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