I have a DVD that I’m trying to split into chapters, and am confused on how this works vs. what I’m thinking. I’m trying to split the DVD into separate files for each chapter, and wish to have a constant bitrate between chapters but it doesn’t seem to work this way when I select fixed bitrate. I was expecting that each chapter would be ripped at the bitrate, and would receive files of varying sizes based upon that bitrate for each chapter. What I seem to be receiving is similar to selecting fixed file size, but just based upon bitrate rather than size. Is this the way it’s supposed to work?
Here’s what I’m looking to accomplish, and if you have a way to do it other than individual chapter rips I would love to hear about it.
The DVD has 17 chapters, some of these chapters are 10 minutes long, full video clips, but some of them are only 2 minutes long, kind of like an interlude between clips. I would like to record these at a constant bitrate that would keep the same 2300 kbps between chapters, meaning the 10 minute chapters would be of a larger file size than the 2 minute chapters, but with the same bit depth recording. I don’t find this to be the case when selecting fixed bitrate…
I ripped a single chapter that is 3 minutes long with a fixed bitrate of 2300 kbps @ avi/h.264/mp3 which resulted in a file size of 62,808 KB. I then ripped two chapters, the first being the same chapter as above with another that is close to 3 minutes long as well. Split for each chapter, and fixed bitrate of 2300 kbps was selected. I would expect both files to be near the same 62,808 KB, but no, file 1 was 48,431 KB and file 2 was 48,368…what am I missing here? Shouldn’t both files be around 62,808 if I’m ripping two chapters that are close to the same size, with a fixed bitrate?