[James Heliker]

Thanks Jeremy!

What you’re saying makes perfect sense – let me make sure I understand:

Video marked as 23.976fps is only the speed at which material gets played back (there are still exactly 24 individual frames of video)

There is no REAL 23.976fps video, and as such no 23.976fps timecode data?

Thanks for your help!!

-James Heliker
james.heliker@gmail.com

[James Heliker]

Hey Folks –

Okay, thank you for all the responses, I appreciate it very much. I thought I made it pretty clear in my post that I understand that 23.976 is actually a ratio (24/1.001):

[James Heliker] “23.976 (more accurately 24/1.001, or 23.97602397602398)
120.1201201201201 x 23.97602397602398 = 2880.00288000288

This is great! Exactly as expected.”

I also thought it was obvious in my original post that I understood that 23.976fps was not equal to real time:

[James Heliker] “Now, I exported a file from this sequence with an actual timecode track, (ProRes 422 HQ Quicktime file), running @ 23.976fps, comes out with a duration of 2880000mu /23976ts (120.1201201201201 seconds).”

Where things start to go gray for me is why 23.976 exists – I’ve been told that 23.976 exists so that there can be an easy math conversion to NTSC for monitors, broadcasting, etc. That makes sense as 23.976 converts to 29.97 (30/1.001!) mathematically (every fourth frame), whereas 24 does not.

If this is the case, I’m left with why we don’t use 23.976 timecode with 23.976 material?

My original two questions are this:

[James Heliker] “However, why is my timecode running at 24fps on a 23.976fps video file? In true 23.976fps math, my final frame (2879) should be at TC marker 00:02:00:03.

1. I was under the impression that 23.976fps video should be accompanied by 23.976fps timecode??
2. Why can’t I set the TCG to run at 23.976fps? What am I missing here?”

Please correct me if I am wrong, but it appears the answer to both of my questions is that 24 frame timecode is the industry standard, even for 23.976 fps material. ie. the TC addresses are simply sliding over time to account to for the difference in speed?

Thank you for your help!

Kind Regards,

-James Heliker
james.heliker@gmail.com

[James Heliker]

Hi Larry,

Thanks for the information. So am I reading correctly that there is no way to author my Blu-ray disc as desired from within Adobe Encore CS5? In my limited tests things seem to be working as far as calling up different subtitle languages or turning them off – but the “default button” on my menu and pop-up menu’s most certainly isn’t being set correctly for “Active Subtitle Track” or “Active Audio Track” either.

As far as turning the pop-up menu off, Encore “includes” this function in that they developed it but didn’t release it? This is very disappointing given that I’m not needing to build a hollywood-level disc – just trying to implement basic functionality that I could provide on a standard def disc in DVD Studio Pro already (minus the pop-up of course).

Thanks again for your help,

– James Heliker
james.heliker@gmail.com

[James Heliker]

Thanks Jon and Danny

Specifically with the motion menu looping/intro issue, I understand what you’ve described and that sucks. I’ll check different players to see how acceptable the issue is in “the real world”.

As far as the button routing goes, I *am* manually assigning buttons (Command + 7) on a per menu basis. But, between saves of the same Encore/Blu-ray project, the assignments are getting “lost” and given seemingly random values. It’s not consistently the way I leave it – and I”m saving my project every chance I get.

Thanks for the help!!!

– James Heliker
james.heliker@gmail.com