[Ardour-Users] "Extract LTC from audio and align video" menu option missing from "Transcode/Import Video file" popup

robertlazarski . robertlazarski at gmail.com
Tue Apr 3 19:07:04 PDT 2018

On Tue, Apr 3, 2018 at 10:19 AM, Chris Caudle <chris at chriscaudle.org> wrote:

> The default might be OK, just depends on whether you need to know the
> actual time it was recorded or if you might have a full day worth of
> recordings to go through.  Setting to actual (wall clock) time could have
> the disadvantage that Robin pointed out, if you import directly into
> Ardour you may end up with a project with 12 or 15 hours of blank space at
> the beginning.
I think that huge blank space issue happened to me when I tried to export
to video a few days ago.

> I had to find the manual for the R8, it seems to have several options for
> timecode settings.
> Internal free run vs.  internal record run is one, when set to record run
> there could be some delay in starting up the time code generator when you
> start recording.  Not for sure, just something to verify.  Should not be
> an issue when set to internal RTC run according to the manual description.
> Is internal auto mute set to on or off? That mutes timecode output when
> recording is stopped, that could be another place that there is an
> indeterminate delay when going from off to on.

Thanks for looking at the manual.

The default of auto mute is off on Free Run and RTC mode and I didn't
change it.

The main issue might be some missing data in the first part of the LTC on
CH1 of the video. After a bunch of videos, I may be an error pattern I
didn't understand at first. I am using analysis tools that Robin wrote and
I'll ask him about the results.

> It might be useful to use a clapboard or similar to give you an easy to
> find location in the audio and video to check whether the "few seconds
> off" value is always the same or whether it changes from start to start.
> --
> Chris Caudle

I've been filming the start of each video using the clock of one of my

I am looking at getting a hardware slate like a Denecke TS-3 - to keep my
sanity I only use software in post :-) .

I am unsure though if I want to send timecode to the slate or have it
generate it. I would have to "JAM" either the F8 or the slate, if I
understand correctly.

Thanks for the help!
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