A question of size.

[Lesmar]

When we rip a dvd 5 or 9, the result in the hard disk is 4 or 8 gbytes...
Well, my question is (maybe stupid one, but thats why I am posting in newbie).
Why the size is allways the same if the movies length are allways diferents?

[K2]

What are you talking about? The size is not always the same.
Bitrate of the data is the answer to the question you want to ask.

[ZippyP.]

Just a guess but...

The bitrate has been adjusted on each film to fill up the allotted disk space. Bitrate(Bits per second) and length in time are what determines final file size. Maximizing the bitrate gives the best quality possible for a given file. 8)

[antoniosgubba]

Sounds like a pretty good thing....at least you're getting the best possible quality bitrate-wise, and not wasting any space on your discs.

[Lesmar]

Sorry again for my newbies questions...
but, then, each movie on dvd has a different bitrate?
and that means that having a different bitrate the quality is diferent for each movie?

[ZippyP.]

In general, higher bitrates will give better quality for a given movie. Once the bitrate is high enough, increasing the bitrate more will give only a slight increase in quality that may not be noticable to the average viewer. HDTV and a progressive scan DVD players might be needed to tell the difference.

Comparing different movies at different bitrates isn't really possible. Movies with a large amount of action scenes will need a higher bitrate to maintain quality due to the high number of constantly changing pixels that make up the video. Low action movies don't require the same bitrate to maintain quality.

For any movie, it makes sense to use up all of the disk space by having the highest bitrate possible. No sense wasting space.