命令行工具缺少GStreamer的autovideosink-Debian 9.4

Question

The problem is only present when using GStreamer command line tools. C programs that contain "autovideosink" compile and run as expected.

gst-inspect-1.0 autovideosink

returns

No such element or plugin 'autovideosink'

and

gst-launch-1.0 videotestsrc ! autovideosink

returns

WARNING: erroneous pipeline: no element "autovideosink"

I am running Debian 9.4. I installed gstreamer with the following command:

sudo apt-get install libgstreamer1.0-0 gstreamer1.0-plugins-base gstreamer1.0-plugins-good gstreamer1.0-plugins-bad gstreamer1.0-plugins-ugly gstreamer1.0-libav gstreamer1.0-doc gstreamer1.0-tools

Answer 1

The element autovideosink is provided by the gstreamer plugin autodetect , which in turn is contained in the Debian package gstreamer1.0-plugins-good . Try to find the plugin on your system:

$ locate libgstautodetect.so /usr/lib/aarch64-linux-gnu/gstreamer-1.0/libgstautodetect.so

Since it is on your system somehow, maybe your C program is 32 bit and gst-launch-1.0 is 64 bit (or vice versa).

Debugging gstreamer using GST_DEBUG is more adequate than strace :

GST_DEBUG=INFO gst-launch-1.0 videotestsrc ! autovideosink