Rendered File to big for DVD Arch

ScheffFrog wrote on 4/19/2011, 2:38 AM

I have a movie that is 1:29:54.25 in length, rendering at MPG2 for DVD Arch at a constant bit rate of 6,000,000. When the file is finished it's size if you right click it and check properties is only 4.5. However, when I bring it into DVD Arch is shows up as 5.1 making it to large to fit on the DVD and "Fit to Disk" does not want to reduce it so that it will fit. I am confused at why DVD Arch sees it larger than it really is. Can anybody help?

Comments

PeterDuke wrote on 4/19/2011, 3:45 AM

Try making a DVD file system anyway, but do not actually burn a disc. DVDA often overestimates the space required. If the size of the files is OK then you can go ahead and burn it.

Note that the DVD has overheads beyond the MPG2 file (IFO files, menu, etc). You need space for them as well.

musicvid10 wrote on 4/19/2011, 7:53 AM

4.5 GB is too large to fit anyway, unfortunately.
Render your MPEG-2 at a lower bitrate, and use VBR for better compression efficiency.
The Videohelp Bitrate Calculator is your friend.

The maximum video+audio+graphics+menus that will fit on a DVD5 is 4.35 GB.

PeterDuke wrote on 4/19/2011, 5:23 PM

According to Wiki, the size of a DVD5 is 4.7 GB or 4.37 GiB. The latter measure is often reported by computer software because it is quicker to compute, but they may say GB, which is not correct.

1 gibibyte = 2^30 bytes = 1073741824 bytes = 1024 mebibytes

A recent DVD I made has 4,540,055,552 bytes.

Afterthought:
Perhaps the GB/GiB confusion is behind why DVDA sometimes says that the the video won't fit when it will.

musicvid10 wrote on 4/19/2011, 6:31 PM

Wikipedia notwithstanding, GB is more commonly denoted as 1024^3 in this century, and much more rarely as 1000^3 bytes, the exception of course being writable storage and media manufacturers who want to maximize their numbers (kind of like a 42" TV, ha!).

If you type "1000000000 Bytes to GB" into Google, it comes back like this:
1 000 000 000 bytes = 0.931322575 gigabytes

Nevertheless, a DVD5 is 99% full at 4.35 GiB (GB), leaving just a sliver of room for a disc header and ID. Go even a bit past that and you have exceeded true disc capacity.