v4l2src does not support progressive interlacing

[Antoine Villeret]

Hi,

I've built gstreamer from source (with Orc and without opengl)
with

~/dev/gstreamer$ git describe --always
3eb334a7
~/dev/gst-plugins-base$ git describe --always
a15baf79
~/dev/gst-plugins-good$ git describe --always
124b66ff

and
~/dev/gst-plugins-good$ git  log -1 | head -5
commit 124b66ffb5fbf7908d985603a2e3b8dba0e3bb2b
Author: Nicolas Dufresne <nicolas.dufresne at collabora.com>
Date:   Thu Oct 18 22:23:31 2018 -0400

    v4l2object: Read driver selected interlace mode

Now I have :
$ gst-launch-1.0 --version
gst-launch-1.0 version 1.15.0
GStreamer 1.15.0 (GIT)
Unknown package origin

test pipeline is the same as previously
and gst.log is here :
https://gist.github.com/avilleret/c66b0c2ed7f14c4406eb9c5607efc136

don't hesitate to ask me more test

best

antoine


Le sam. 27 oct. 2018 à 11:57, Nicolas Dufresne <nicolas at ndufresne.ca> a
écrit :

> Le samedi 27 octobre 2018 à 04:27 -0500, avilleret a écrit :
> > Hi Nicolas,
> >
> > I do have the same issue with a BlueCherry capture card (BT878 - Provideo
> > PV150) and gsttreamer 1.14.1 on Ubuntu 18.04.
> >
> > here is the pipeline :
> >
> > GST_DEBUG_NO_COLOR=1 GST_DEBUG="v4l2*:7" gst-launch-1.0 v4l2src
> > name=video_source device=/dev/video0 !
> > video/x-raw,format=YUY2,width=768,height=512,framerate=25/1  !
> videoconvert
> > ! autovideosink 2> gst.log
> >
> > and the result is here :
> > https://gist.github.com/avilleret/db588687ce5121efc4125a5989a128c9
> >
> > note the error on line 408 :
> > ERREUR : de l’élément /GstPipeline:pipeline0/GstV4l2Src:video_source :
> > Device '/dev/video0' does not support progressive interlacing
> >
> > I'll try to build gstreamer with your patch and let you know.
>
> That would be great report. As for now only INTERLEAVED and PROGRESSIVE
> is supported, the previous report was not that useful to check if the
> patch works for these two cases.
>
> For sequential, I've discussed a bit around, and the dual video meta
> requirement, that would make such implementation a night mare could
> likely be dropped. Unless I found any blocker to this, it should be
> relatively short to implement. Ideally I'd teach the software
> interlace/deinterlace element to handle that, which is just a different
> way to index lines after all, it's remains the same format as
> interleaved. For that, I actually have some HW that would then let me
> test this support, and test the attached patch.
>
> >
> > Best regards
> >
> > Antoine
> >
> >
> >
> > --
> > Sent from: http://gstreamer-devel.966125.n4.nabble.com/
> > _______________________________________________
> > gstreamer-devel mailing list
> > gstreamer-devel at lists.freedesktop.org
> > https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
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