Problem with whipwebrtcsink uplink to Dolby.io, was Problem with NDISRC, WHIPSINK, and audio

[Tarun Tej K]

Hi,

Thanks for trying this out.

We discovered a bug with whipwebrtcsink (and whipsink) that got exposed
because of one of the recent changes.

More information about this issue is captured here -
https://gitlab.freedesktop.org/gstreamer/gst-plugins-rs/-/issues/394 to
track this bug.


On Sat, 29 Jul, 2023, 18:33 GST Developer, <gstreamer at gallery.co.uk> wrote:

> Hi Tarun
>
> We have finally got things up and running with GStreamer 1.22 as you
> advised, and indeed the 'request-aux-sender' issue has gone away.
>
> Now we have a different issue, which might be some specific compatibility
> with Dolby.io (formerly millicast).
>
> Here is what we get - the pipeline runs for a few seconds before failing:
>
>
> gst-launch-1.0  ndisrc ndi-name="PRIMARY (SIGGEN)" ! ndisrcdemux
> name=demux demux.video ! queue ! videoconvert ! whipwebrtcsink name=ws
> signaller::whip-endpoint="
> https://director.millicast.com/api/whip/myStreamName",auth-token="......redacted......"
> demux.audio ! queue ! audioconvert ! ws.
>
> Setting pipeline to PAUSED ...
>
> Pipeline is live and does not need PREROLL ...
>
> Pipeline is PREROLLED ...
>
> Setting pipeline to PLAYING ...
>
> New clock: GstSystemClock
>
> Redistribute latency...
>
> Redistribute latency...
>
> Redistribute latency...
>
>
> *ERROR: from element /GstPipeline:pipeline0/GstWhipWebRTCSink:ws:
> GStreamer encountered a general stream error.*
>
> *Additional debug info:*
>
> *net/webrtc/src/webrtcsink/imp.rs <http://imp.rs>(1493):
> gstrswebrtc::webrtcsink::imp::BaseWebRTCSink::connect_signaller::{{closure}}::{{closure}}
> (): /GstPipeline:pipeline0/GstWhipWebRTCSink:ws:*
>
> *Signalling error: Error: Error None (Some("Old Canceller should not
> exist")) at net/webrtc/src/utils.rs:131 <http://utils.rs:131>*
>
>
> Execution ended after 0:00:02.911160133
>
> Setting pipeline to NULL ...
>
> Freeing pipeline ...
>
>
> Any ideas ?
>
> Many thanks !
>
>
>
> *On 15 Jul 2023, at 15:44, Tarun Tej K <tarun4690 at gmail.com
> <tarun4690 at gmail.com>> wrote:*
>
> *Ok, you will need Gstreamer version 1.22 for this, where webrtcbin has
> this signal 'request-aux-sender' implemented.*
>
>
>
> On Sat, 15 Jul, 2023, 19:53 GST Developer, <gstreamer at gallery.co.uk>
> wrote:
>
>> Thanks Tarun,
>>
>> *we are making progress *- this pipeline *does* startup, but it fails
>> after a few seconds:
>>
>> *gst-launch-1.0  ndisrc ndi-name="NDIPE8 (SIGGEN)" ! ndisrcdemux
>>  name=demux demux.video ! queue ! videoconvert ! whipwebrtcsink name=ws
>> signaller::whip-endpoint="https://director.millicast.com/api/whip/myStreamName
>> <https://director.millicast.com/api/whip/myStreamName>",auth-token=“..redacted.."
>> demux.audio ! queue ! audioconvert ! ws.*
>>
>> Setting pipeline to PAUSED ...
>> Pipeline is live and does not need PREROLL ...
>> Pipeline is PREROLLED ...
>> Setting pipeline to PLAYING ...
>> New clock: GstSystemClock
>> Redistribute latency...
>> Redistribute latency...
>> Redistribute latency…
>>
>> *<it runs fine here for a few seconds with the numbers running>*
>>
>> thread 'tokio-runtime-worker' panicked at 'Signal 'request-aux-sender' of
>> type 'GstWebRTCBin' not found',
>> /home/ubuntu/.cargo/git/checkouts/gtk-rs-core-7be42ca38bd6361c/44c4ab3/glib/src/object.rs:2642
>> :32
>> note: run with `RUST_BACKTRACE=1` environment variable to display a
>> backtrace
>> thread '<unnamed>' panicked at 'called `Result::unwrap()` on an `Err`
>> value: PoisonError { .. }', net/webrtc/src/webrtcsink/imp.rs:3013:47
>> ERROR: from element /GstPipeline:pipeline0/GstWhipWebRTCSink:ws:
>> Panicked: called `Result::unwrap()` on an `Err` value: PoisonError { .. }
>> thread '<unnamed>' panicked at 'called `Result::unwrap()` on an `Err`
>> value: PoisonError { .. }', net/webrtc/src/webrtcsink/imp.rs:3013Execution
>> ended after 0:00:01.886767934
>> :47Setting pipeline to NULL ...
>>
>> ERROR: from element /GstPipeline:pipeline0/GstWhipWebRTCSink:ws: Panicked
>> ERROR: from element /GstPipeline:pipeline0/GstWhipWebRTCSink:ws: Panicked
>> ERROR: from element /GstPipeline:pipeline0/GstWhipWebRTCSink:ws:
>> Panicked: called `Result::unwrap()` on an `Err` value: PoisonError { .. }
>> ERROR: from element /GstPipeline:pipeline0/GstWhipWebRTCSink:ws: Panicked
>> Freeing pipeline …
>>
>>
>>
>
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