Sizing a Video

georgepag · Post by **georgepag** » Wed Jan 27, 2010 1:26 am

Hi,

I have a large project that I have created out of several clips. When I burn it I will have to use two 8 GB disks. What is the best way to see how much of the video can fit on the first disk and then create a file that contains that section of the project so I can burn it?

sjj1805 · Post by **sjj1805** » Wed Jan 27, 2010 2:52 am

How do you know it will be 8GB or larger?
A typical 4.3 GB DVD disc can easily hold up to 3 hours of video.

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Trevor Andrew · Post by **Trevor Andrew** » Wed Jan 27, 2010 9:58 am

Hi

a bit rate calculator may help

http://dvd-hq.info/bitrate_calculator.php

georgepag · Post by **georgepag** » Wed Jan 27, 2010 2:24 pm

Hi,

After I finished putting the project together I clicked share/create disk/dvd. When the project was loaded, the colored bar at the bottom of the window showed a file size of 15.72 GB (3 hrs and 56 min) and there was a green, yellow and red section. The red section showed 7.96 GB which I assumed meant the file overran the selected 8GB disk by that amount. That's when I asked the question I then selected share/create video file/dvd/ntsc dvd 16:9 and let it render overnight. The resulting file is 10 GB long so I still need to split it, unless there is a way to make it smaller without compromising quality.

Post by **Ron P.** » Wed Jan 27, 2010 2:50 pm

Using the bitrate calculator that Trevor provided a link to, will allow you figure out what bitrates to use to get your file size down. However you would not be able to squeeze that much onto even a dual layer DVD, without having the quality so poor it would not be worth viewing.

You may need to produce a box set from your videos, sort of a Part-1 and Part-2, Part-3 scenario.

Black Lab · Post by **Black Lab** » Wed Jan 27, 2010 2:52 pm

unless there is a way to make it smaller without compromising quality.

As Trevor stated, adjust the bitrate to reduce the size. However:
High bitrate = large file size = high quality
Low bitrate = small file size = low quality

So to answer your question, you cannot reduce the size to any great degree without reducing the quality.

georgepag · Post by **georgepag** » Wed Jan 27, 2010 3:23 pm

Thanks for the quick answers, which lead me to my next question. How do I split the video? I've been playing around with splitting it into two clips and creating two video files from those clips but so far am unsuccessful. Guess I don't understand manipulating clips at all. I can bring clips into the project but how do I do the reverse? Create a new clip from an excerpt of the project and save it as a separate file?

Black Lab · Post by **Black Lab** » Wed Jan 27, 2010 3:52 pm

That's exactly how I would do it - split the project and render two different video files.

Let's call your project Project A. Find a spot somewhere in the middle or where a logical cut could be. Cut your project there. Delete any clips beyond that point, then use SAVE AS and save this as Project B. Now go back and open Project A, delete all the clips before the cut, and save as Project C.

Now you render Project B as your first half, then render Project C as your second half.

georgepag · Post by **georgepag** » Wed Jan 27, 2010 7:03 pm

How do I cut the project? I am setting the trim handles where I want them and them clicking the scissors icon. This creates the section I want to trim out, correct? How do I then delete it. I guess I need a step by step 'cause nothing I've tried is working. Sorry for the really basic questions.

georgepag · Post by **georgepag** » Wed Jan 27, 2010 7:12 pm

ignore the last question, finally got it, split the video and saved it. thanks.