Avimux refuses Video Caps

[Marianna Smidth Buschle]

You can see in the CAPS in the image that the working pipeline has a 
colorimetry field, while the other doesn't.

So I would still suspect that it could be a problem.

Per suggestions from 
https://gstreamer-devel.narkive.com/2Yq80E6x/vaapipostproc-and-v4l2sink 
you can try a videoconvert or a capssetter.


Otherwise you have to look at the output with: --gst-debug=*:3,GST_CAPS:5

And look at the CAPS both sides are offering and compare them.


On 21/09/2023 15.51, gstreamer-devel-request at lists.freedesktop.org wrote:
> Message: 2
> Date: Thu, 21 Sep 2023 13:51:22 +0000
> From: "Sternkopf, Felix"<Felix.Sternkopf at telerob.com>
> To: Marianna Smidth Buschle<msb at qtec.com>,
> 	"gstreamer-devel at lists.freedesktop.org"
> 	<gstreamer-devel at lists.freedesktop.org>
> Subject: AW: Avimux refuses Video Caps
> Message-ID:<114836208f974896ae319ad1880f0273 at telerob.com>
> Content-Type: text/plain; charset="utf-8"
>
> My guess is the framerate. I don?t no why but after the ?h264parse? step the framerate is down to 0/1. My source is an encoded video from a rtspsrc and when I change the encoder from openh264enc to x264enc on the rtsp server it works and the framerate is correctly at 30/1. I have no idea why the framerate drops down to 0/1 after the parsing step.
> With --gst-debug=*:3,GST_CAPS:5 I cannot find any problems with the colorimetry.
>
> Not working pipeline with openh264enc Encoder on RTSP server side:
> [cid:image001.png at 01D9ECA3.77154F90]
> Working pipeline with x264enc Encoder on RTSP server side:
> [cid:image004.png at 01D9ECA3.77154F90]
>
>
> Best Regards,
> Felix
>
>
>
>
> Von: Marianna Smidth Buschle<msb at qtec.com>
> Gesendet: Donnerstag, 21. September 2023 14:17
> An:gstreamer-devel at lists.freedesktop.org
> Cc: Sternkopf, Felix<Felix.Sternkopf at telerob.com>
> Betreff: Re: Avimux refuses Video Caps
>
>
> My first guess is problems with the colorimetry, I had issues with other plugins.
>
>
>
> You can try debugging further with: --gst-debug=*:3,GST_CAPS:5
>
> So you can pin point what parts of the CAPS is going wrong.
>
>
>
> In some situations a 'h264parse' might help.
>
>
>
> Best Regards
>
> Marianna
> On 21/09/2023 14.00,gstreamer-devel-request at lists.freedesktop.org<mailto:gstreamer-devel-request at lists.freedesktop.org>  wrote:
>
> Hey guys,
>
> i developed a pipeline with two parallel streams which are combined in a muxer. There is one audio stream and one video stream. My problem is, that the GstAviMux refuses the following videocaps:
>
> video/x-h264,
>
>              stream-format=(string)byte-stream,
>
>              alignment=(string)au,
>
>              width=(int)1280,
>
>              height=(int)720,
>
>              framerate=(fraction)0/1,
>
>              chroma-format=(string)4:2:0,
>
>              bit-depth-luma=(uint)8,
>
>              bit-depth-chroma=(uint)8,
>
>              parsed=(boolean)true,
>
>              profile=(string)constrained-baseline,
>
>              level=(string)3.1
>
>
>
> As i understand the documentation of the GstAviMux element, it should accept this caps. Is there any ideas for this problem?
>
>
>
> Kind regards,
>
> Felix Sternkopf
>
> --
>
> Best regards / Med venlig hilsen
>
> ?Marianna Smidth Buschle?
> -------------- next part --------------
> An HTML attachment was scrubbed...
> URL:<https://lists.freedesktop.org/archives/gstreamer-devel/attachments/20230921/fbae5966/attachment.htm>
> -------------- next part --------------
> A non-text attachment was scrubbed...
> Name: image001.png
> Type: image/png
> Size: 119475 bytes
> Desc: image001.png
> URL:<https://lists.freedesktop.org/archives/gstreamer-devel/attachments/20230921/fbae5966/attachment.png>
> -------------- next part --------------
> A non-text attachment was scrubbed...
> Name: image004.png
> Type: image/png
> Size: 130992 bytes
> Desc: image004.png
> URL:<https://lists.freedesktop.org/archives/gstreamer-devel/attachments/20230921/fbae5966/attachment-0001.png>
>
> ------------------------------
>
-- 
Best regards / Med venlig hilsen
“Marianna Smidth Buschle”