Encore BluRay menu size limit??

[Keith Huntington]

i know the total menu limit is 1gb for dvd... is that the same for blu? or are the limitations different? just want a ballpark before i start this next menu, as it will be HEAVY on motion effects. thanks.

[Ann Bens]

All I know its max 18 buttons for a widescreen menu.

[Averdahl]

It´s actually 32 buttons for Blu-ray but only 18 will be functional when previewing in Encore. So 18 buttons won´t work when previewing but all 32 will work correctly when burned. 🙂

[Warren Heaton]

For all your questions about Blu-ray discs, this book is the best resrource:

BD Demystified

http://bddemystified.com

You're talking just the menus, right?

As far as your bit-budget is concerned (that is, how much space the data - the menus, video, stills audio and/or anything else you're including on the disc - requires) for Blu-ray authoring, it's not a matter of how motion heavy or effects heavy your menus are as the motion menus are based on one video stream.   So it's a matter of how long your motion menus are instead.

On the DVD side, the 1GB data structure limit is not direclty related to menus.  The video objects have to be broken down into 1GB chunks (the VOB), but this can be menu space and title space.  

For both BD and DVD, the menu only takes up as much space as the encoded video stream needed for the menus.  For example, if your DVD menu source is encoded at 3.7mbps, then you're looking at about 111mb for a thrity second menu regardless of what happens visually. 

[Averdahl]

just want a ballpark before i start this next menu, as it will be HEAVY on motion effects. thanks.

If i remeber correctly i have had approx three minutes in total video length that was encoded at 30 Mpbs and it worked. (Encore CS6)

[Stan Jones]

Yes, for DVD there is a 1GB limit for menus (including video/audio assets used in menus).

BD does not have that limit, but it is complicated. I think Encore uses the IG (inteactive graphic) BD method, rather than the more powerful BD-J. From Daniel Ludwig on Cow way back:

"it´s got a 16MB limit for all IG (interactive graphics) within one title (menues are a titles as well), as the IG-stream will be loaded completly into the players RAM-buffer before starting the title."

No, I don't remember what that means. I'd do what you want, and then see if it works!

Stan

[Keith Huntington]

guess we can't quote each other anymore? it'd been forever since i've needed to walk down the adobe forums. 🙂 anywho,

"All I know its max 18 buttons for a widescreen menu."
-no problem at all. i think the the most link heavy menu page i will have is like 9 buttons? i'm just more concerns with video backgrounds and such.

"for Blu-ray authoring, it's not a matter of how motion heavy or effects heavy your menus are as the motion menus are based on one video stream. So it's a matter of how long your motion menus are instead."
-yeah i understand that, but if you have say 3 cumulative minutes of BG video for a menu then its probably nothing... if you have 1 hour of cumulative video, the bitrate of the video directly would need to be considered, vs how many menus, and yadda yadda. i probably won't overbudget the 1gb, but i just want to know for sure before going down that path. i think i had also been thinking for some reason that transitions would be budgeted into that, but i just remembered that transitions are seperate from menus, so it probably won't be that bad.

"On the DVD side, the 1GB data structure limit is not direclty related to menus"

-that actually makes sense based on the vob restriction. so was that how it was all long? because i had always understood that there was a hard restriction of 1gb menu assets, as if encore sandboxed all of your menus into one zone, and if all of that content was more than 1gb cumulatively, the disc would fail. but perhaps i understood that wrong then.

[neil wilkes]

DVD was always with a total menu size of 1Gb. 

The VOB thing is kinda misleading too, as there are 2 types of VOB - the menu structures and the actual audio/video multiplexes.

(The Audio/Video multiplexes have a limitation of 1Gb per part, so this may be where Warren above got confused)

As an example, each VTS has the same structure:

PGC Section - the VMGM (Video ManaGer Menu) named as

Video_TS.VOB.

The actual VTS sections (each title on the disc is a separate VTS, or in Encore the Abstraction Layer puts every sequence into a separate VTS where the spec allows multiple items in a VTS as long as all the components are to the same specification) and the naming here is

VTS_01_0.IFO - this is the VTSM (Video Title Set) menu, if presented (VTSM menus are not mandatory

VTS_01_1/2/3 etc - this is the actual content, and these too have a 1Gb limitation but you do not need to think about this as the VOB files are split as part of the multiplexing/output writing.

The total of all menu items on the finished disc must not exceed 1Gb.