I does not work. Besides, what would ":00" do? The TC need to be as frame-accurate as possible, so we need to convert millisecond of the first captured frame to frame. F.ex: 10:45:13:21 where 21 would be (approximately) 840 ms after 10:45:13 at 25 fps.
-steinar 2018-06-06 17:43 GMT+02:00 Dave Rice <d...@dericed.com>: > > > On Jun 5, 2018, at 4:12 PM, Steinar Apalnes <stei...@gmail.com> wrote: > > > > Thanks for the reply! :-) > > > > My request/question is not strictly related to decklink but capturing in > > general; The ability to set the start tc when the first frame is captured > > from any capture device. The method should not be depending on incoming > tc > > signals from external devices but rather rely on the PC clock to > determine > > the "exact" capture time of the first frame. If it's feasable. > > Perhaps add something like: > -metadata "timecode=$(date +"%T:00")" > > > -steinar > > > > 2018-06-05 21:47 GMT+02:00 Dave Rice <d...@dericed.com>: > > > >> > >>> On Jun 4, 2018, at 4:41 PM, Steinar Apalnes <stei...@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 > >> > >> _______________________________________________ > >> ffmpeg-user mailing list > >> ffmpeg-user@ffmpeg.org > >> http://ffmpeg.org/mailman/listinfo/ffmpeg-user > >> > >> To unsubscribe, visit link above, or email > >> ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe". > > _______________________________________________ > > ffmpeg-user mailing list > > ffmpeg-user@ffmpeg.org > > http://ffmpeg.org/mailman/listinfo/ffmpeg-user > > > > To unsubscribe, visit link above, or email > > ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe". > > _______________________________________________ > ffmpeg-user mailing list > ffmpeg-user@ffmpeg.org > http://ffmpeg.org/mailman/listinfo/ffmpeg-user > > To unsubscribe, visit link above, or email > ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe". _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
