[FFmpeg-user] Injecting clock based TC at first frame captured

[Dave Rice]

> On Jun 4, 2018, at 4:41 PM, Steinar Apalnes <steipal at gmail.com> wrote:
> 
> Hi,
> 
> I'm doing a lot of capturing through decklink video devices and I was
> wondering if it was, or would be possible to make ffmpeg set a frame
> accurate start TC based on wall clock when the first frame was captured?
> An option like this maybe:
> 
> -tc_inject 1
> 
> Where 1 could be the first frame.
> 
> or
> 
> -tc_inject now
> -timecode now
> 
> Maybe this kind of option exist or maybe there are other good ways of
> solving the "problem" but I have yet to find a solution.

There is a patch regarding this under consideration on ffmpeg-devel. See http://ffmpeg.org/pipermail/ffmpeg-devel/2018-May/230500.html or subject line "[FFmpeg-devel] [PATCH] Limited timecode support for lavd/decklink".
Best Regards,
Dave Rice