Unable to get visual window when running gstreamer under Windows (work under Bash for Windows)

Mon Apr 8 19:03:52 UTC 2019

Yes, it works. I mentioned in the earlier part of the first email that I
could run it with  \gst-launch-1.0.exe videotestsrc is-live=true !
openh264enc ! rtph264pay ! rtph264depay ! decodebin ! autovideosink. So
it's basically "looping back" to itself instead of broadcasting over the
network. That works. The command you mentioned also works.

I can play with logging for a while too, turn up debugging and see if I can
notice anything which hints at a display problem.

FWIW, I'm on Windows 10, Version 1809. NVIDIA GeForce RTX 2070.

I'm fine digging into this further, but if there's anything else you think
I should try, or anything I should pay special attention to when looking at
the logs, please let me know. Thanks again for your help.

On Mon, Apr 8, 2019 at 1:55 PM Nicolas Dufresne <nicolas at ndufresne.ca>
wrote:

> Le lundi 08 avril 2019 à 13:29 -0500, Ben Rush a écrit :
> > With respect to the x264enc: I was mistaken and was able to get it to
> work under Windows. It must have been an earlier experiment which made me
> believe it wasn't available. So, I apologize. I tried it, and the behavior
> was the same: no window was shown.
> >
> > Regarding the firewall: turning it off completely also made no
> difference _visually_. But it might have changed things under the hood;
> what I mean by that is that I'm seeing more at the console now. Wireshark
> shows UDP traffic is flowing on the loopback device. This is the kind of
> output I'm seeing despite no visual window (note: when running under Bash
> for Windows, I don't see this output). Note that this output displays in
> bursts, with a period of maybe five seconds where nothing is shown.
>
> Can you check the display element works ? e.g. videotestsrc !
> autovideosink
>
> For the burst issues, change you x264enc setting, with tune=zerolatency as
> an example.
>
> >
> >
> /GstPipeline:pipeline0/GstDecodeBin:decodebin0/GstH264Parse:h264parse0.GstPad:sink:
> caps = video/x-h264, stream-format=(string)avc, alignment=(string)au,
> codec_data=(buffer)01f4000dffe1001d67f4000d919b28283f602d41804150000003001000000303c8f142996001000668ebec448440,
> level=(string)1.3, profile=(string)high-4:4:4
> >
> /GstPipeline:pipeline0/GstDecodeBin:decodebin0/GstTypeFindElement:typefind.GstPad:sink:
> caps = video/x-h264, stream-format=(string)avc, alignment=(string)au,
> codec_data=(buffer)01f4000dffe1001d67f4000d919b28283f602d41804150000003001000000303c8f142996001000668ebec448440,
> level=(string)1.3, profile=(string)high-4:4:4
> > /GstPipeline:pipeline0/GstDecodeBin:decodebin0.GstGhostPad:sink: caps =
> video/x-h264, stream-format=(string)avc, alignment=(string)au,
> codec_data=(buffer)01f4000dffe1001d67f4000d919b28283f602d41804150000003001000000303c8f142996001000668ebec448440,
> level=(string)1.3, profile=(string)high-4:4:4
> > /GstPipeline:pipeline0/GstRtpH264Depay:rtph264depay0.GstPad:src: caps =
> video/x-h264, stream-format=(string)avc, alignment=(string)au,
> codec_data=(buffer)01f4000dffe1001d67f4000d919b28283f602d41804150000003001000000303c8f142996001000568ebec4480,
> level=(string)1.3, profile=(string)high-4:4:4
> >
> /GstPipeline:pipeline0/GstDecodeBin:decodebin0.GstGhostPad:sink.GstProxyPad:proxypad0:
> caps = video/x-h264, stream-format=(string)avc, alignment=(string)au,
> codec_data=(buffer)01f4000dffe1001d67f4000d919b28283f602d41804150000003001000000303c8f142996001000568ebec4480,
> level=(string)1.3, profile=(string)high-4:4:4
> >
> /GstPipeline:pipeline0/GstDecodeBin:decodebin0/GstTypeFindElement:typefind.GstPad:src:
> caps = video/x-h264, stream-format=(string)avc, alignment=(string)au,
> codec_data=(buffer)01f4000dffe1001d67f4000d919b28283f602d41804150000003001000000303c8f142996001000568ebec4480,
> level=(string)1.3, profile=(string)high-4:4:4
> >
> /GstPipeline:pipeline0/GstDecodeBin:decodebin0/GstH264Parse:h264parse0.GstPad:sink:
> caps = video/x-h264, stream-format=(string)avc, alignment=(string)au,
> codec_data=(buffer)01f4000dffe1001d67f4000d919b28283f602d41804150000003001000000303c8f142996001000568ebec4480,
> level=(string)1.3, profile=(string)high-4:4:4
> >
> /GstPipeline:pipeline0/GstDecodeBin:decodebin0/GstTypeFindElement:typefind.GstPad:sink:
> caps = video/x-h264, stream-format=(string)avc, alignment=(string)au,
> codec_data=(buffer)01f4000dffe1001d67f4000d919b28283f602d41804150000003001000000303c8f142996001000568ebec4480,
> level=(string)1.3, profile=(string)high-4:4:4
> > /GstPipeline:pipeline0/GstDecodeBin:decodebin0.GstGhostPad:sink: caps =
> video/x-h264, stream-format=(string)avc, alignment=(string)au,
> codec_data=(buffer)01f4000dffe1001d67f4000d919b28283f602d41804150000003001000000303c8f142996001000568ebec4480,
> level=(string)1.3, profile=(string)high-4:4:4
> > /GstPipeline:pipeline0/GstRtpH264Depay:rtph264depay0.GstPad:src: caps =
> video/x-h264, stream-format=(string)avc, alignment=(string)au,
> codec_data=(buffer)01f4000dffe1001d67f4000d919b28283f602d41804150000003001000000303c8f142996001000668ebec448440,
> level=(string)1.3, profile=(string)high-4:4:4
> >
> /GstPipeline:pipeline0/GstDecodeBin:decodebin0.GstGhostPad:sink.GstProxyPad:proxypad0:
> caps = video/x-h264, stream-format=(string)avc, alignment=(string)au,
> codec_data=(buffer)01f4000dffe1001d67f4000d919b28283f602d41804150000003001000000303c8f142996001000668ebec448440,
> level=(string)1.3, profile=(string)high-4:4:4
> >
> /GstPipeline:pipeline0/GstDecodeBin:decodebin0/GstTypeFindElement:typefind.GstPad:src:
> caps = video/x-h264, stream-format=(string)avc, alignment=(string)au,
> codec_data=(buffer)01f4000dffe1001d67f4000d919b28283f602d41804150000003001000000303c8f142996001000668ebec448440,
> level=(string)1.3, profile=(string)high-4:4:4
> >
> /GstPipeline:pipeline0/GstDecodeBin:decodebin0/GstH264Parse:h264parse0.GstPad:sink:
> caps = video/x-h264, stream-format=(string)avc, alignment=(string)au,
> codec_data=(buffer)01f4000dffe1001d67f4000d919b28283f602d41804150000003001000000303c8f142996001000668ebec448440,
> level=(string)1.3, profile=(string)high-4:4:4
> >
> /GstPipeline:pipeline0/GstDecodeBin:decodebin0/GstTypeFindElement:typefind.GstPad:sink:
> caps = video/x-h264, stream-format=(string)avc, alignment=(string)au,
> codec_data=(buffer)01f4000dffe1001d67f4000d919b28283f602d41804150000003001000000303c8f142996001000668ebec448440,
> level=(string)1.3, profile=(string)high-4:4:4
> > /GstPipeline:pipeline0/GstDecodeBin:decodebin0.GstGhostPad:sink: caps =
> video/x-h264, stream-format=(string)avc, alignment=(string)au,
> codec_data=(buffer)01f4000dffe1001d67f4000d919b28283f602d41804150000003001000000303c8f142996001000668ebec448440,
> level=(string)1.3, profile=(string)high-4:4:4
> >
> > On Mon, Apr 8, 2019 at 12:33 PM Ben Rush <ben at ben-rush.net> wrote:
> > > I will check my firewall, but also note that the bash for Windows
> scripts that worked ran on the same computer as the Windows scripts that
> did not.
> > >
> > > Different subsystems, but it was the same instance of Windows running
> on the same computer and with the same networking stack.
> > >
> > > On Mon, Apr 8, 2019, 12:27 Nicolas Dufresne <nicolas at ndufresne.ca
> wrote:
> > > > Le lundi 08 avril 2019 à 11:49 -0500, Ben Rush a écrit :
> > > > > I imagine a lot of the community here is using Linux, but I'm
> bound by Windows because of my work. I mention this because I'm not sure
> how much traction I'll get asking a Windows-specific question, but I'll
> try.
> > > > >
> > > > > I'm trying to get some basic gst-launch-1.0 commands to work, but
> thus far have been unable. Moving those same commands over to Bash for
> Windows and launching them there, I'm able to get the play window to run
> (I'm running Xming on my Windows machine as an X server). Note that some
> commands do work and display the interface, so I think it's unlikely to be
> a bad installation.
> > > > >
> > > > > First, this command works just fine when run under windows:
> > > > >
> > > > > .\gst-launch-1.0.exe videotestsrc is-live=true ! openh264enc !
> rtph264pay ! rtph264depay ! decodebin ! autovideosink
> > > > >
> > > > > Upon executing it, I get the test video to show up in the video
> window. But when I try to split this up as a server/client, it fails. First
> I run the following command to spin up the client:
> > > > >
> > > > > .\gst-launch-1.0.exe -v udpsrc port=3000 caps="application/x-rtp"
> ! application/x-rtp,clock-rate=90000,payload=96 ! rtph264depay ! decodebin
> ! autovideosink
> > > > >
> > > > > Once running, I then run this command to acts as the server and
> start pushing UDP packets:
> > > > >
> > > > > .\gst-launch-1.0.exe videotestsrc is-live=true ! openh264enc !
> h264parse ! rtph264pay pt=96 ! udpsink port=3000
> > > >
> > > > I've recently hit a IPv6 vs IPv4 issue when not specifying any
> host/address on the udp elements. You should also check your firewall, udp
> is often dropped by default.
> > > >
> > > > > Nothing crashes, and I don't get any errors, but also no window
> opens up. I see nothing. However, if I spin up Bash for Windows (with
> Xming) and run this in one window:
> > > > >
> > > > > gst-launch-1.0 -v udpsrc port=3000 caps="application/x-rtp" !
> application/x-rtp,clock-rate=90000,payload=96 ! rtph264depay ! decodebin !
> autovideosink
> > > > >
> > > > > Followed by this in another window:
> > > > >
> > > > > gst-launch-1.0 videotestsrc is-live=true ! x264enc ! h264parse !
> rtph264pay pt=96 ! udpsink port=3000
> > > > >
> > > > > The only difference is the x264enc instead of the openh264enc. I'm
> not sure how to get the x264enc to exist under Windows (I cannot find the
> plugin for Windows).
> > > >
> > > > I've check our CI builds and they are present, so it mean libgstx264
> should also be in the official builds:
> > > >
> > > > https://gstreamer.freedesktop.org/data/pkg/windows/1.14.4/
> > > >
> > > > > Any help or input would be appreciated. Thanks in advance.
> > > > >
> > > > >
> > > > > _______________________________________________
> > > > > gstreamer-devel mailing list
> > > > > gstreamer-devel at lists.freedesktop.org
> > > > >
> > > > > https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
> > > >
> > > > _______________________________________________
> > > > gstreamer-devel mailing list
> > > > gstreamer-devel at lists.freedesktop.org
> > > > https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
> >
> > _______________________________________________
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> > https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
>
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