gstreamer plugin nvenc can not work.

Graphics / Linux Linux
1

I install gstreamre 1.14.4 from source. The system is like below:

walle@in_dev_autocar:~$ gst-inspect-1.0 nvenc
Plugin Details:
  Name                     nvenc
  Description              GStreamer NVENC plugin
  Filename                 /usr/lib/gstreamer-1.0/libgstnvenc.so
  Version                  1.14.4
  License                  LGPL
  Source module            gst-plugins-bad
  Source release date      2018-10-02
  Binary package           GStreamer Bad Plug-ins source release
  Origin URL               Unknown package origin


  0 features:

but I run like below:

walle@in_dev_autocar:~$ gst-launch-1.0 -v v4l2src device=/dev/video1 ! autovideoconvert ! nvenc  ! fakesink
WARNING: erroneous pipeline: no element "nvenc"
walle@in_dev_autocar:~$

Why ??

And I can not find nvh264enc plugin.

2

Try

gst-launch-1.0 -v v4l2src device=/dev/video1 ! autovideoconvert ! nvh264enc  ! fakesink
3

I try this

gst-launch-1.0 -v v4l2src device=/dev/video1 ! autovideoconvert ! nvh264enc  ! fakesink

the result is like below:

WARNING: erroneous pipeline: no element "nvh264enc"
4

What’s the output of
gst-inspect-1.0 --gst-debug-level=4 nvenc

5

The output of gst-inspect-1.0 --gst-debug-level=4 nvenc is:

0:00:00.000257842   148      0x11250c0 INFO                GST_INIT gstmessage.c:127:_priv_gst_message_initialize: init messages
0:00:00.000721407   148      0x11250c0 INFO                GST_INIT gstcontext.c:84:_priv_gst_context_initialize: init contexts
0:00:00.000950016   148      0x11250c0 INFO      GST_PLUGIN_LOADING gstplugin.c:317:_priv_gst_plugin_initialize: registering 0 static plugins
0:00:00.001005340   148      0x11250c0 INFO      GST_PLUGIN_LOADING gstplugin.c:225:gst_plugin_register_static: registered static plugin "staticelements"
0:00:00.001027124   148      0x11250c0 INFO      GST_PLUGIN_LOADING gstplugin.c:227:gst_plugin_register_static: added static plugin "staticelements", result: 1
0:00:00.001057843   148      0x11250c0 INFO            GST_REGISTRY gstregistry.c:1727:ensure_current_registry: reading registry cache: /home/walle/.cache/gstreamer-1.0/registry.x86_64.bin
0:00:00.010604067   148      0x11250c0 INFO            GST_REGISTRY gstregistrybinary.c:621:priv_gst_registry_binary_read_cache: loaded /home/walle/.cache/gstreamer-1.0/registry.x86_64.bin in 0.009527 seconds
0:00:00.010652468   148      0x11250c0 INFO            GST_REGISTRY gstregistry.c:1583:scan_and_update_registry: Validating plugins from registry cache: /home/walle/.cache/gstreamer-1.0/registry.x86_64.bin
0:00:00.014383740   148      0x11250c0 INFO            GST_REGISTRY gstregistry.c:1685:scan_and_update_registry: Registry cache has not changed
0:00:00.014394545   148      0x11250c0 INFO            GST_REGISTRY gstregistry.c:1762:ensure_current_registry: registry reading and updating done, result = 1
0:00:00.014400669   148      0x11250c0 INFO                GST_INIT gst.c:807:init_post: GLib runtime version: 2.48.2
0:00:00.014406097   148      0x11250c0 INFO                GST_INIT gst.c:809:init_post: GLib headers version: 2.48.2
0:00:00.014409504   148      0x11250c0 INFO                GST_INIT gst.c:810:init_post: initialized GStreamer successfully
Plugin Details:
  Name                     nvenc
  Description              GStreamer NVENC plugin
  Filename                 /usr/lib/gstreamer-1.0/libgstnvenc.so
  Version                  1.14.4
  License                  LGPL
  Source module            gst-plugins-bad
  Source release date      2018-10-02
  Binary package           GStreamer Bad Plug-ins source release
  Origin URL               Unknown package origin


  0 features: