Adding service & provider metadata

ea7kir · July 12, 2026, 6:36pm

I’m using the Go “generated” bindings by @RSWilli and have a couple questions.

Am I using the most complete commits?

require github.com/go-gst/go-gst v1.4.1-0.20260422122825-3754473356de
require github.com/go-gst/go-glib v1.4.1-0.20260319133722-f9cac05a5d55 // indirect

How should I declare the following correctly?

func advertise_service(mux *gst.Element) {
	var (
		service *gst.MpegtsSDTService
		sdt     *gst.MpegtsSDT
		desc    *gst.MpegtsDescriptor
		section *gst.MpegtsSection
	)
	sdt = gst.Mpegts_sdt_new()
	// ete...
}

This doesn’t compile, but it would be a start if it did, because I need to insert metadata into an mpeg transport stream. For example, as can be done with ffmpeg by using the following tags…

   -metadata service_provider="MY-PROVIDER-NAME"
   -metadata service_name="MY-SERVICE-NAME"

I’m very impressed with the effort @RSWilli has put into these bindings, with which I now have a complicated application up and running. But it won’t be useful until I’m able to add the service & provider metadata. Some help will be much appreciated.

bilboed · July 13, 2026, 7:39am

Hi,

The mpeg-ts muxer doesn’t support adding multiplex-wide PSI (except for PAT). So inserting SDT is not supported.

ea7kir · July 13, 2026, 8:09am

I’m using the mpegtsmux plugin, so are you saying it’s not possible? The docs seem to imply otherwise: SI sections can be specified through a custom event

RSWilli · July 14, 2026, 12:01pm

Regardless of the fact that this is not supported, the mpegts functions live in it’s own go package, as they are advertised as a separate library GstMpegts:

github.com/go-gst/go-gst

pkg/gstmpegts/gstmpegts.gen.go

generated_bindings


      
          // NewSDT wraps gst_mpegts_sdt_new
          // 
          // see also https://gstreamer.freedesktop.org/documentation/mpegts/gst-dvb-section.html#gst_mpegts_sdt_new
          func NewSDT() *SDT {
          	var cret *C.GstMpegtsSDT // return, full, converted
          
          	cret = C.gst_mpegts_sdt_new()
          
          	var goret *SDT
          
          	goret = UnsafeSDTFromGlibFull(unsafe.Pointer(cret))
          
          	return goret
          }

bilboed · July 15, 2026, 6:01am

whoops. you’re right. That example should indeed work (forgot well defined sections had a PID defined in them).

ea7kir · July 16, 2026, 4:12pm

Congratulations on your big merge, and thank you for all the effort that’s made this possible. I immediately switched and it just works!.

And thanks for the NewSTD() function, even though I haven’t yet figured out how to use it - whilst feeling even more confused whether it’s possible to insert service_name and service_provider into my UDP MPEG TS, or not.