I've been working on an open source video playout and real-time titling
package similar to the features of Newtek's Video Toaster.  I've been
testing out pieces of implementation with Gstreamer as the backend and have
been finding that it is very fragile when it comes to combining realtime
(I've been using video4linux) and prerecordered sources (files).  I've got a
case of the grass is always greener and was hoping to give MLT a try, since
looking at the documentation, it seems like a much simpler interface,
without the background complexities of first mastering glib.  On top of
that, if I understand the build process right, MLT treats higher-level
language bindings like first class citizens, and I would've loved to work
with Gstreamer in Ruby if only the bindings were up to date.

>From reading the mailing list archives, I found a reference to February 2011
saying that live sources were pretty badly broken.  I was wondering if that
is still the case?  Also, from the wiki fundamentals of MLT page, I couldn't
find much information on using live sources with transitions or mixing live
and file producers.  Is mixing live and file producers outside the scope of
MLT?  I'm going to be digging into MLT to learn more, but would greatly
appreciate if someone could warn me I'm barking up the wrong tree with the
framework.

Thank you,
Louis
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