Error working with appsink and appsrc

[Dwight Kulkarni]

Hi Anton,

*1. I do not see a rtspsink in your  #2 pipeline.*
>> I am not adding the rtspsink when I use the
gst_rtsp_media_factory_set_launch it appears to setup that for me. My
previous pipeline which was working I didn't have rtspsink either:
v4l2src device=/dev/video1 ! video/x-raw, width=1920, height=1080,
framerate=15/1 ! queue max-size-buffers=10
                          ! vpuenc_h264 ! tee name=v ! queue
max-size-buffers=10 ! rtph264pay name=pay0 pt=96 v.
                         ! h264parse ! splitmuxsink name=filesink
location=video%02d.mkv max-size-time=10000000000
muxer-properties="properties,streamable=true"


*2. Try to add rtpjitterbuffer into your #2 pipeline*
Ok I will try this. When I added a queue to my earlier pipeline it started
telling me there is no data available.

*3. Did you check locally?* Do you see your stream from appsrc? Try to dump
to file (if the display is not present).

I am trying to figure out the command to do this, for example, if I start
the appsink with:

gst-launch-1.0 v4l2src device=/dev/video1 ! video/x-raw, width=1920,
height=1080, framerate=15/1 ! queue max-size-buffers=10
                          ! vpuenc_h264 ! tee name=v ! queue
max-size-buffers=10 ! appsink name=h264vid v.
                         ! h264parse ! splitmuxsink name=filesink
location=video%02d.mkv max-size-time=10000000000
muxer-properties="properties,streamable=true"


What would be my command to setup the receiver, all the examples that I see
to tap into appsink with appsrc are using a programmatic call back not a
text pipeline. For example is there something like:

gst-launch-1.0 appsrc name=h264videosrc sink=h264vid ! avdec_h264 !
autovideosink


4. Ok I'll post this


On Fri, Sep 10, 2021 at 11:33 AM Anton Pryima <zingfrid at gmail.com> wrote:

> Hello Dwight.
>
> 1. I do not see a rtspsink in your  #2 pipeline.
> 2. Try to add rtpjitterbuffer into your #2 pipeline
> 3. Did you check locally? Do you see your stream from appsrc? Try to dump
> to file (if the display is not present).
> 4. Post an error you've got on the receiver end.
>
> Best regards,
> Anton.
>
> On Thu, Sep 9, 2021 at 10:47 PM Dwight Kulkarni via gstreamer-devel <
> gstreamer-devel at lists.freedesktop.org> wrote:
>
>> Hi all,
>>
>> I am trying to setup RTSP server with master pipeline using appsrc and
>> appsink.
>>
>> I) In media_configure callback I setup the generator pipeline:
>>
>> string pipeline = "v4l2src device=/dev/video1 ! video/x-raw, width=1920,
>> height=1080, framerate=15/1 ! queue ! vpuenc_h264 ! appsink name=h264vid
>> max-buffers=100 drop=true";
>>
>> 2) The RTSP pipeline is as follows:
>> pipeline_config = "appsrc name=h264videosrc ! queue ! rtph264pay
>> name=pay0 pt=96";
>>
>> 3) I have set the caps and need_data callback:
>>   ctx->vid_appsrc = appsrc =
>>       gst_bin_get_by_name_recurse_up (GST_BIN (element), "h264videosrc");
>>   ctx->vid_appsink = appsink =
>>       gst_bin_get_by_name (GST_BIN (ctx->generator_pipe), "h264vid");
>>   g_object_set (G_OBJECT (appsrc), "caps", caps, NULL);
>>   g_object_set (G_OBJECT (appsink), "caps", caps, NULL);
>>  g_signal_connect (appsrc, "need-data", (GCallback) need_data, ctx);
>>
>> 4) In need_data callback I copy the data like so:
>> GstSample *sample;
>> sample = gst_app_sink_pull_sample (GST_APP_SINK (ctx->vid_appsink));
>> GstBuffer *buffer = gst_sample_get_buffer (sample);
>> GstSegment *seg = gst_sample_get_segment (sample);
>> g_signal_emit_by_name (appsrc, "push-buffer", buffer, &ret);
>>
>>
>> Based on the information I have, there is data in the need_data sample,
>> however VlcClient after authentication throws error.
>>
>> Any help would be appreciated !
>>
>> --
>> Sincerely,
>>
>> Dwight Kulkarni
>>
>

-- 
Sincerely,

Dwight Kulkarni
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