Tee with three forks and two appsinks: last appsink doesn't callback

[Anton Pryima]

Hello Dwight.

Why do you need to construct a so complicated pipeline and do both encoding
and decoding?
Why not make a couple of pipelines:
1. v4l2src device=/dev/video1 ! video/x-raw, width=1920, height=1080,
framerate=15/1 ! appsink
2. appsrc -> vpuenc_h264 ! splitmuxsink
3. appsrc -> jpegenc ! whatever you need next....  or just copy frames
where every you need instead of second appsink.

Beste regards,
Anton.

On Tue, Sep 14, 2021 at 5:43 PM Dwight Kulkarni via gstreamer-devel <
gstreamer-devel at lists.freedesktop.org> wrote:

> Hi all,
>
> I am trying to setup a pipeline with tee that has three forks. One of the
> forks is a jpegsink that I want to then access the image. Whereas the first
> two forks are working the last one for jpegsink is not.
>
> Here is what I do:
>
> gst_init (0, NULL);
> string pipeline = "v4l2src device=/dev/video1 ! video/x-raw, width=1920,
> height=1080, framerate=15/1 ! vpuenc_h264 ! tee name=v ! queue ! h264parse
> ! appsink name=h264vid max-buffers=1 drop=true v. ! queue ! h264parse !
> splitmuxsink name=filesink location=./videos/video%02d.mkv
> max-size-time=10000000000 muxer-properties=\"properties,streamable=true\"
> v. ! queue ! avdec_h264 ! jpegenc ! appsink name=jpegsink max-buffers=1
> drop=true";
> gstreamer_main_video_pipeline = gst_parse_launch(pipeline.c_str(),NULL);
>
> GstElement * jpegsink =
> gst_bin_get_by_name_recurse_up(GST_BIN(gstreamer_main_video_pipeline),
> "jpegsink");
>
> JpegContext* ctx = g_new0 (JpegContext, 1);
> g_signal_connect (G_OBJECT(jpegsink), "new-sample",
> G_CALLBACK(new_sample), ctx);
>
>
> I never get the callback to new_sample, but the pipeline is running and
> other two tee forks work properly.
>
> Any help would be appreciated!
>
> --
> Sincerely,
>
> Dwight Kulkarni
>
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