Data communication using video issues with decklink

[Reinis]

I got it ! But not sure how to implement it best.

I need to set `pts` on every create call and increment. What would be 
the simplest way to do it in my case?


On 9/17/21 7:53 PM, Reinis wrote:
>
> Hello!
>
> After my previous email I have created simple plugins to send and 
> receive information through video. 
> https://github.com/reinismu/gst-data-video
> Basic example line `|GST_DEBUG=*:3 datasrc ! 
> video/x-raw,framerate=25/1,width=1920,height=1080 ! datasink|` works 
> fine, but when I try to send the same stream to decklink card
>
> `GST_DEBUG=*:3 gst-launch-1.0 datasrc ! 
> video/x-raw,framerate=25/1,width=1920,height=1080,format=UYVY ! 
> decklinkvideosink device-number=1 mode=1080p25`
>
> I get
>
> ```
>
> Setting pipeline to PAUSED ...
> Pipeline is PREROLLING ...
> 0:00:00.066954349 330572 0x55d1513f6c00 FIXME default 
> gstutils.c:4025:gst_pad_create_stream_id_internal:<datasrc0:src> 
> Creating random stream-id, consider implementing a deterministic way 
> of creating a stream-id
> Redistribute latency...
> 0:00:00.067288248 330572 0x55d1513f6c00 WARN datasrc 
> src/datasrc/imp.rs:178:gstdataembed::datasrc::imp:<datasrc0> Created 
> buffer with size 8294400
> 0:00:00.067313957 330572 0x55d1513f6c00 WARN basesrc 
> gstbasesrc.c:3127:gst_base_src_loop:<datasrc0> error: Internal data 
> stream error.
> 0:00:00.067317744 330572 0x55d1513f6c00 WARN basesrc 
> gstbasesrc.c:3127:gst_base_src_loop:<datasrc0> error: streaming 
> stopped, reason error (-5)
> ERROR: from element /GstPipeline:pipeline0/DataSrc:datasrc0: Internal 
> data stream error.
> Additional debug info:
> ../gstreamer/libs/gst/base/gstbasesrc.c(3127): gst_base_src_loop (): 
> /GstPipeline:pipeline0/DataSrc:datasrc0:
> streaming stopped, reason error (-5)
> ERROR: pipeline doesn't want to preroll.
> Setting pipeline to NULL ...
> Freeing pipeline ...
>
> ```
>
>
> When I use `videotestsrc` (`GST_DEBUG=*:3 gst-launch-1.0 videotestsrc 
> ! video/x-raw,framerate=25/1,width=1920,height=1080,format=UYVY ! 
> decklinkvideosink device-number=1 mode=1080p25`) It works fine.
>
>
> Maybe someone can point me in the right direction?
>
>
> Thanks!
>
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