gst-plugins-bad nvdec element doesn't work

[Matthew Waters]

I think the system memory output for nvdec is only in GStreamer master.

On start up there is a normal cuda warning when draining that you see
there.  I think the actual error is that an OpenGL context could not be
created.  This warning: 'error: glGetString not defined or returned
invalid value' generally means that the platform specific code created
an OpenGL context but the attempt to retrieve necessary function
pointers failed.

Can you try a couple of other pipelines like so to check if GStreamer
OpenGL on windows requires using glimagesink as a video sink?  It does
sound weird to me if true.

gst-launch-1.0.exe gltestsrc ! glimagesink
gst-launch-1.0.exe gltestsrc ! gldownload ! queue ! videoconvert !
d3dvideosink
gst-launch-1.0.exe gltestsrc ! gleffects_identity ! gldownload ! queue !
videoconvert ! d3dvideosink

For the pipelines in the above list that fail, can you grab a debug log
with the following environment variables GST_DEBUG_FILE=/path/to/file
GST_DEBUG=3,gl*:7 and create a new issue on gitlab at
https://gitlab.freedesktop.org/gstreamer/gst-plugins-base/-/issues/new.

P.S. for your pipeline there is a glcolorconvert element that you could
replace the videoconvert with if that would help.  The gldownload
element would need to go after the glcolorconvert element of course.

Cheers
-Matt

On 16/6/20 5:13 pm, Борис wrote:
>
> Hi! Thank you very much for your answer. What about version:
>
> system: gstreamer version 1.16.2, win10 x64, compiler msvc 2015 x64
>
> I did like you said, and changed pipeline like this:
>
> filesrclocation=D:/test_nvdec/jumanji.mp4!qtdemux!h264parse!nvdec!gldownload!videoconvert!appsinksync=false
>
> But there are still errors, something wrong with cuda... Do you have
> any idea how to resolve this
>
> 0:00:00.167429000 24124 000002E149570940 WARN nvdec
> gstnvdec.c:58:cuda_OK: CUDA call failed: CUDA_ERROR_INVALID_HANDLE,
> invalid resource handle
>
> 0:00:00.167571000 24124 000002E149570940 WARN nvdec
> gstnvdec.c:1010:gst_nvdec_drain:<nvdec0> parser failed
>
> 0:00:00.330955000 24124 000002E149570940 WARN glbasefilter
> gstglbasefilter.c:491:gst_gl_base_filter_find_gl_context:<gldownloadelement0>
> error: glGetString not defined or returned invalid value
>
> 0:00:00.331173000 24124 000002E149570940 WARN basetransform
> gstbasetransform.c:992:gst_base_transform_do_bufferpool:<gldownloadelement0>
> Subclass failed to decide allocation
>
> 0:00:00.331488000 24124 000002E149570940 WARN GST_PADS
> gstpad.c:4231:gst_pad_peer_query:<nvdec0:src> could not send sticky events
>
> 0:00:00.360713000 24124 000002E149570940 ERROR nvdec
> gstnvdec.c:1054:gst_nvdec_decide_allocation:<nvdec0> failed to create
> OpenGL context
>
> 0:00:00.378002000 24124 000002E149570940 WARN videodecoder
> gstvideodecoder.c:3783:gst_video_decoder_negotiate_pool:<nvdec0>
> Subclass failed to decide allocation
>
> 0:00:00.378244000 24124 000002E149570940 WARN nvdec
> gstnvdec.c:819:handle_pending_frames:<nvdec0> failed to negotiate with
> downstream
>
> 0:00:00.378474000 24124 000002E149570940 WARN qtdemux
> qtdemux.c:6605:gst_qtdemux_loop:<qtdemux0> error: Internal data stream
> error.
>
> 0:00:00.378600000 24124 000002E149570940 WARN qtdemux
> qtdemux.c:6605:gst_qtdemux_loop:<qtdemux0> error: streaming stopped,
> reason not-negotiated (-4)
>
> (gametrack_modules.exe:24124): GStreamer-CRITICAL **: 10:07:54.808:
> gst_element_get_bus: assertion 'GST_IS_ELEMENT (element)' failed
>
> (gametrack_modules.exe:24124): GStreamer-CRITICAL **: 10:07:54.808:
> gst_bus_have_pending: assertion 'GST_IS_BUS (bus)' failed
>
> (gametrack_modules.exe:24124): GStreamer-CRITICAL **: 10:07:54.808:
> gst_object_unref: assertion 'object != NULL' failed
>
> (gametrack_modules.exe:24124): GStreamer-CRITICAL **: 10:07:54.808:
> gst_element_send_event: assertion 'GST_IS_ELEMENT (element)' failed
>

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