v4l2src does not support progressive interlacing

Nicolas Dufresne nicolas at ndufresne.ca
Mon Oct 29 18:56:11 UTC 2018


Le lun. 29 oct. 2018 18 h 32, Tim Harvey <tharvey at gateworks.com> a écrit :

> On Sun, Oct 28, 2018 at 3:44 PM Nicolas Dufresne <nicolas at ndufresne.ca>
> wrote:
> >
> >
> >
> > Le dim. 28 oct. 2018 20 h 43, Antoine Villeret <
> antoine.villeret at gmail.com> a écrit :
> >>
> >> hi Nicolas,
> >>
> >> as far as i understand v4l2-compliance output (
> https://gist.github.com/avilleret/0eb894d58612d91aba7ab81f9d823dbf)
> >> bttv driver does support TRY_FMT
> >> but I might be wrong
> >>
> >> on the other side, I made further test with your path, and it seems to
> work.
> >> 'it seems' because strangely a test pipeline abord with the output
> you've already look at.
> >> But my program (based on OpenFrameworks) does work with your patch
> while it didn't with gstreamer 1.14 from Ubuntu 18.04 repo.
> >> I don't know actually what trigs the error you see and why the test
> pipeline abord before displaying anything,
> >> maybe I miss some extensions/plugins.
> >
> >
> > Ok, so it seems like the patch does something. I'll reread with the
> assumption TRY_FMT isn't supported, I might better understand. I always
> believed that without that, it would always fail.
> >
> >>
> >> Thanks for your time, and I might make further test tomorrow if you
> need.
> >>
>
> Nicolas,
>
> Did you receive the log I sent you regarding my experience with this
> issue? I can send again if needed.
>
> Regards,
>

I haven't I believe. Maybe the ML have eaten it, was it big ?



> Tim
>
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