HIGH bitrate is greater in Full mode vs Movie only

[hallway]

When preparing the latest Pirates of the Caribbean movie, if I do a full backup (along with 25% reduction from extras), I get these values:

- Reduction Level for DVD-5: 48.5%
- Overall Bitrate : 2,474/1,979Kbs
- Movie improvement from extra reduction = 3.6%
- HIGH/LOW/TYPICAL Bitrates: 4,504/1,033/1,979 Kbs

If I do main movie only, I get these:

- Reduction Level for DVD-5: 72.4%
- Overall Bitrate : 3,770/3,016Kbs
- HIGH/LOW/TYPICAL Bitrates: 3,786/1,632/3,016 Kbs

I may be misinterpreting these but I thought that doing movie only would allow higher bit-rates to be achieved. Instead of having to compress the movie and extras, it's only having to compress the movie. To fit in the same 4.x gb of space, I could get more bit-rate. Am I reading this wrong ?

I do see a substantial increase in the TYPICAL bitrate in movie-only mode.

[Fishman0919]

What you should be looking at is...


- Reduction Level for DVD-5: 48.5%

- Reduction Level for DVD-5: 72.4%

and...

- HIGH/LOW/TYPICAL Bitrates: 4,504/1,033/1,979 Kbs

- HIGH/LOW/TYPICAL Bitrates: 3,786/1,632/3,016 Kbs

[hallway]

Yes, I understand that the reduction level is what I'm really interested in but in turn, I'd expect the highest bitrate to increase too. The result of having to compress the movie almost 50% is a decreased bitrate. It looks like it spreads it out vs chopping it off though (does that make sense?).

[jdobbs]

It's probable that the high bitrate in the first example was in one of the extras that has been removed for movie-only...

[hallway]

I was actually thinking that was the case even though it seems unlikely. This is disc 1 of Pirates and I'll have to look again, but there's not a lot of extras on that disc. Actually, that *has* to be it, right ?

[jdobbs]

On that disc not necessarily. It uses ILVU for the two versions of the film. When you do movie-only you are taking only one of the two. It's probably a scene from the other angle that is using the higher bitrate.