Decklink plugin only works with videotestsrc (so it seems)

[Stefan Sauer]

On 12/15/2011 05:56 PM, João Paulo Pizani Flor wrote:
> HI all, I've been trying to use the decklinksink GStreamer element
> lately, and with little success...
>
> The following gst-launch command-line works flawlessly:
> "  gst-launch-0.10 videotestsrc ! decklinksink  "
>
> And shows the SMTPE bars on my TV. I could even use textoverlay to
> create a nice soviet screen :) The following ALSO works (ALSO using
> videotestsrc):
> "  gst-launch-0.10 videotestsrc pattern=red ! textoverlay text="Сою́з
> Сове́тских Социалисти́ческих Респу́блик" valignment=center
> font-desc="Sans Bold 20" color=16776960 ! decklinksink  "
>
> BUT, when I try to use filesrc in a very simple pipeline, it all goes
> bad. The following gst-launch command gives no error, and the pipeline
> state is PLAYING, but my screen remains black:
> "  gst-launch-0.10 filesrc location=/home/joaopizani/btest.mp4 !
> decodebin2 ! autoconvert ! decklinksink  "
don't put autoconvert there. Try colorspace or ffmpegcolorspace.

Stefan


> I think I have isolated any problem with my card and/or driver, because:
>
> 1) It works with videotestsrc very well!
> 2) The failing command, when I change "decklinksink" to "xvimagesink",
> also works OK.
>
>
> Do any of you guys have any experience using decklinksink? If if you
> don't, does any of you have any idea of what's happening to me? :)
>
> PS: Perhaps David Schleef, the creator of the decklink plugin is around here...
>
>
> Thanks, folks!
>
> João Paulo Pizani Flor
> joaopizani at gmail.com
> 4S Broadcasting - Florianopolis - Brazil
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