How to get the final gstreamer pipeline formulated by deepstream-app?

**• Hardware Platform--------Jetson**
**• DeepStream Version-------5.0**
**• JetPack Version -----------4.4**
**• TensorRT Version----------**

I suppose that deepstream-app formulates a gstreamer pipeline and then just runs it. Please correct me if I am wrong.

I wonder if I can get the formulated pipeline. Because I need to add a gstreamer ‘videoflip’ element. My camera is mounted upside-down {unfortunately}.

Thanks :)

Hi, you are right. That is actually the way I generated the pipelines I use for DeepStream 4.0:

I haven’t documented pipelines dos DeepStream 5.0 but they are almost the same. Here is how I did it:

  • Add the flag to generate a GStreamer dot file to the command to run a deepstream example: GST_DEBUG_DUMP_DOT_DIR=.
  • Generate a PNG from the dot file: dot -Tpng <name>.dot > pipe.png
  • Then check the dot file for the elements and properties and add them to your pipeline
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Thanks @miguel.taylor

Sorry if my question is naive. Are you indicating to modify .../deepstream_sdk_5.0_x86_64/opt/nvidia/deepstream/deepstream/sources/apps/sample_apps/deepstream-app/deepstream_app_main.c ?

If yes, then where should I add the flag in the file?


Sorry if it wasn’t clear. The flag is added before running the application that uses GStreamer. For example:

GST_DEBUG_DUMP_DOT_DIR=. gst-launch-1.0 ...
GST_DEBUG_DUMP_DOT_DIR=. ./deepstream-test1 ...
GST_DEBUG_DUMP_DOT_DIR=. deepstream-app ...
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