If it’s a single folder of videos or other bulky files with most in the range of 100MB and 1GB, I mainly do the following manual method with the help of ImgBurn. This generally leaves little wastage (typically under 40MB/disc left over, which works out at roughly 1 DVD of space wasted per 100 DVDs written):
[li]Sort the folder by size and create a new folder called ‘Done’.
[/li][li]Add roughly 4GB of the largest files into ImgBurn.
[/li][li]Click the calculator icon in ImgBurn to see the ‘Free Space’ figure.
[/li][li]Now scroll down the list of videos for largest file that fits within this free space and add it.
[/li][li]Click the calculator icon once more to check that this compilation still fits.
[/li][li]Burn the compilation.
[/li][li]Move these burned files into the ‘Done’ folder.
[/li][li]Click the ‘Remove all items’ trash icon in ImgBurn and repeat from step 2.
If there is a good variety of different size files, this method will usually result in very little free space wastage apart from the last few discs where there are few small files left to fill the free space left over.
From my experience helping people back up their photo collection, this manual method also works well backing up folders of photos, such as a large “My Pictures” collection. Instead of selecting files, I select folders to roughly fill the disc space and then add a small folder or unsorted pictures (not in a folder) to fill the last bit of free space on each disc.