[theora] Cinema automation cues

[Ricardo Costa]

So, would it be better to work with this on the player end, with whatever
playlist formats are available there? This seems logical to use with events
between files in a playlist (between shorts, or in between the previews and
the feature) but with something like "lights-up-to-halflight" at the start
of the end credits of a feature, I didn't think the playlist would be
useful, since that's an event in the middle of a file (even if it is right
towards the very end).

Know what I mean? I'm on Linux, Ubuntu to be precise. What players would you
recommend to handle advanced options like this? I realize we might start
migrating off of the ogg topic right now, so my apologies ahead of time.

- Ricardo

On Fri, Jul 16, 2010 at 6:08 PM, Benjamin M. Schwartz <
bmschwar at fas.harvard.edu> wrote:

> On 07/16/2010 04:56 PM, Ricardo Costa wrote:
> > . Is there any way to tag or embed a theora video
> > file with any sort of cues at certain points in the program or
> > individual file (feature start, end credits, feature end, etc.) that can
> > then be turned into pulses for theater automation systems to cue lights
> > up, lights down, sound format switch, etc.? Thanks for any help.
>
> Theora (or more accurately, the Ogg container) does not have a standard
> system for coding these sorts of timed events.  You can easily create one
> yourself, though.
>
> My recommendation is to use a separate file containing a labeled list of
> timestamps within the video.  If it is important that only one file be
> used, you can encapsulate the contents of that file inside the Ogg file in
> a Skeleton "message header".  There are utilities and libraries available
> for easily reading and writing these message headers.
>
> --Ben
>
>


-- 
Ricardo M. Costa
Film & HD Video Projection
(323) 491-7346
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