Decklink plugin only works with videotestsrc (so it seems)

[João Paulo Pizani Flor]

My bad, I had another instance of gst-launch in the background, which
withheld the pipeline. Now, the error is another:

" qtdemux.c(3865): gst_qtdemux_loop ():
/GstPipeline:pipeline0/GstDecodeBin2:decodebin20/GstQTDemux:qtdemux0:
streaming stopped, reason not-negotiated "

You might believe this is something related to the QuickTime demuxer.
So do I. However, I already tried the same command-line exchanging a
mp4 file for a simple mp2 and it ALSO didn't work....


cheers,

João Paulo Pizani Flor
joaopizani at gmail.com



2011/12/16 João Paulo Pizani Flor <joaopizani at gmail.com>:
> Didn't work with neither of them. Not with colorspace, not with
> ffmpegcolorspace...
>
> The message I got this time was:
> " ERROR: Pipeline doesn't want to pause. "
>
> Anyways, I'll keep trying hard this afternoon, and I'll post my
> results back here in case of any success, so that people don't need to
> go into this maze just to make the decklink work :)
>
> cheers,
>
> João Paulo Pizani Flor
> joaopizani at gmail.com
>
>
>
> On Fri, Dec 16, 2011 at 9:35 AM, Stefan Sauer <ensonic at hora-obscura.de> wrote:
>> 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
>>> _______________________________________________
>>> gstreamer-devel mailing list
>>> gstreamer-devel at lists.freedesktop.org
>>> http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
>>
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