adding datetime stamp to location

[Dwight Kulkarni]

Hi Nicolas and everyone,

I was able to get the issue resolved with the method that Nicolas
mentioned, namely to get media-configure callback and then access the
element by name and then get the "format-location" callback on the
splitmuxsink and pass it the formatted name in a function.

This is working great !! Thank you Nicolas.

However, now I am having a problem that I start the RTSP server, and the
pipeline only seems to save when I login with VLC client to view the
stream. As soon as I log off, the file stops saving.

Is there a way to have the RTSP pipeline run even when no client is
connected ?  Or can I simulate a fake client in someway ?



On Wed, Sep 8, 2021 at 1:36 PM Dwight Kulkarni <dwight at realtime-7.com>
wrote:

> Hi Nicolas,
>
> Thank you for this info !
>
> In the example shown we get callback to media_configure, and access the
> pipeline element. Do I have to then create another call back for the file
> sink as shown below?
>
> static voidmedia_configure (GstRTSPMediaFactory * factory, GstRTSPMedia * media,    gpointer user_data){  GstElement *element = gst_rtsp_media_get_element (media);
>
> GstElement * filesink = gst_bin_get_by_name_recurse_up (GST_BIN (element), "filesink");
>
> # add a callback signal
> g_signal_connect (G_OBJECT (filesink), "format-location", G_CALLBACK (format_location_callback), NULL);
>
>
> PIPELINE =
> (v4l2src device=/dev/video1 ! video/x-raw,width=1920, height=1080!
> queue ! vpuenc_h264 ! queue ! h264parse ! splitmuxsink name=filesink
> location=video%02d.mkv max-size-time=10000000000
> muxer-factory=matroskamux muxer-properties="properties,streamable=true)
>
>
>
>
>
> On Wed, Sep 8, 2021 at 12:16 PM Nicolas Dufresne <nicolas at ndufresne.ca>
> wrote:
>
>> Le mercredi 08 septembre 2021 à 10:35 -0400, Dwight Kulkarni via
>> gstreamer-devel a écrit :
>>
>> Hi all,
>>
>> I am trying to get my pipeline to add a datetime stamp to the location,
>> as opposed to the numeric value.
>>
>> Previously I was using:  splitmuxsink location=video%02d.mkv
>>
>> This is creating multiple files with video00.mkv etc. names.
>>
>> Now I tried using: splitmuxsink location=video$(date +%s).mkv
>>
>> This is creating only a single file with timestamp and appears to
>> overwrite the previous files.
>>
>> 1) I see some examples where a callback is used. Should I use a callback
>> or is there another way ?
>>
>> 2) If I use callback, I have GstMediaFactory object where I assign the
>> pipeline with:  gst_rtsp_media_factory_set_launch
>>
>>
>> You have to connect to the "media-configure" signal of your factory:
>>
>>
>> https://gitlab.freedesktop.org/gstreamer/gst-rtsp-server/-/blob/master/examples/test-appsrc.c#L123
>>
>> And then use gst_rtps_media_get_element() to retreive the pipeline:
>>
>>
>> https://gitlab.freedesktop.org/gstreamer/gst-rtsp-server/-/blob/master/examples/test-appsrc.c#L66
>>
>> regards,
>> Nicolas
>>
>>
>> I can't seem to find how to access the pipeline element in
>> GstMediaFactory object.
>>
>> I want to do something like this code:
>>
>> static gchararray
>> format_location_callback (GstElement * splitmux,
>>                           guint fragment_id,
>>                           gpointer udata)
>> {
>>   static int i =0;
>>   gchararray myarray = g_strdup_printf("myvid%d.mp4", i);
>>   i += 1;
>>
>>   return myarray;
>> }
>>
>>
>> g_signal_connect (G_OBJECT (bin->sink), "format-location",
>>           G_CALLBACK (format_location_callback), bin);
>>
>>
>> Any help is appreciated. Thanks !
>>
>>
>>
>
> --
> Sincerely,
>
> Dwight Kulkarni
>


-- 
Sincerely,

Dwight Kulkarni
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