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

Chris Caudle chris at chriscaudle.org
Mon Apr 2 13:43:46 PDT 2018

On Mon, April 2, 2018 2:52 pm, robertlazarski . wrote:
> However, the video and audio are out of sync. If I press the F8 record
> button before I start the video, the audio comes in early. If I press the
> F8 record button after I start the video, the audio comes in late.

Back up a minute and explain your recording setup.
The way timecode is supposed to work is either you have a single source of
timecode audio that is distributed to all recording devices, or you
synchronize the free-running timecode generators on each piece of
equipment, and the generators are supposed to have enough frequency
accuracy that they will stay synchronized within one frame (ca. 33ms) for
the time period that you need them to free run.

Does your setup match either of those descriptions?  It sounds like the
time code generators you are using are both free running and start over
(at 00:00:01.00?) when you start recording, as opposed to free running and
synchronized to time of day so that you get "true" time code on your
recordings no matter when you start.

Chris Caudle

More information about the Ardour-Users mailing list