Fitting 5.6 Gigs on a single layer

Jim Brennan

Jim Brennan

VHS Member Old Skool
I have a project for a client that is 5.6 gigs. For the sake of cost, the client is hoping to have these produced on a single layer disc. I was thinking of adjusting the bitrate in DVD SP4 to accomodate, but I'm not really sure where to start in terms of the numbers. (Currently set at four, with a max bit rate of 7) Is that the best way to go? I'm not terribly concerned about the quality loss (a lot of it is split screened, so there is a lot or redundant blacks around the edges), so I am open to suggestions.

Thanks.
 
Fitting onto Single Layer

Fitting onto Single Layer

Jim,

There are 2 options that I use whenever I end up with more than 4.7gb.
1) Go back to compressor and use a lower bit rate (i.e. 150 minutes instead of 120 minutes)
2) Build your DVD then use Toast to open the Video TS folder and compress the disc for you. This is the option I use most of the time and always have good results.

Hint: When you create a folder to save your build file to, make sure and name it what you want your DVD titles. Toast will title your DVD based on that folder name.

Hope this helps.

Jon Schwartz
CA Video Productions
 
Jim:

the length of the video in total minutes is the determining factor. How long is the video in minutes and how long is your motion menu if you have one?
 
I figured there was a way to do it with toast, which helps a lot since I already have the files outputted and the menu built.

It's three separate videos (TRT, about 1:45), with a very simple menu.

Thanks.
 
Do you compress the audio to AC3 or is it AIFF?

AC3 is fine on 0.2 mbps whereas AIFF will be 1.5 mbps.

1.5 - 0.2 = 1.3

1.3 megabits per second, 1.3/8 gives megabytes per second, times 60 to get MB per min, then that * 105 which is the length of your work and it should then be to just about 1 GB.

You should be able to get off 1 GB on your total size by changing to AC3 at 192 kbps.

Also, a DVD will not be 4.7, but in my experience it is 4.23 (I guess it is the same way as the OS calculates a HDD at 750 GB drive to be 700 GB). Actually I found this:
4,718,592,000 Bytes
4,608,000 KB
4,500 MB
4.395 GB
 
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Yeah, I used AC3. I just got done viewing the burned version (used the Toast method), and it actually looks as good as the separate files did. But again, there was a lot of split screen work (top and bottom), which left a lot of blacks around the edge of the frame. I'm thinking all that redundant info helps with the compression.

But thanks for all that info. Good to know for next time. Is that bitrate calc something you use for outputting from Compressor, or authoring in DVD SP4? Great tool to have either way.
 
You use it in Compressor to figure out your maximum bitrate < 7.9<Mbps that will allow you to fit the video you have on a DVD.

Noah
 
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