GStreamer
"GStreamer is a pipeline-based multimedia framework that links together a wide variety of media processing systems to complete complex workflows."[1]
Installation
On Ubuntu or Debian
$ sudo apt-get install libgstreamer1.0-dev libgstreamer-plugins-base1.0-dev libgstreamer-plugins-bad1.0-dev gstreamer1.0-plugins-base gstreamer1.0-plugins-good gstreamer1.0-plugins-bad gstreamer1.0-plugins-ugly gstreamer1.0-libav gstreamer1.0-tools gstreamer1.0-x gstreamer1.0-alsa gstreamer1.0-gl gstreamer1.0-gtk3 gstreamer1.0-qt5 gstreamer1.0-pulseaudio
GStreamer Tools
You can use "gst-launch-1.0" to quickly test pipelines before trying to implement your application using the gstreamer API calls.
gst-launch-1.0
Command Pattern
A command with "gst-launch-1.0" generally has the following form:
You could also name an element so that you can refer to it later
Sample Usages
- Display a test pattern
# video test src
$ gst-launch-1.0 videotestsrc ! videoconvert ! autovideosink
# audio test src
$ gst-launch-1.0 audiotestsrc ! autoaudiosink
# combine both video and audio
$ gst-launch-1.0 audiotestsrc ! autoaudiosink videotestsrc ! autovideosink
- Play video from a file
- Play video from a USB camera (v4l2)
- Play video from a RTSP stream
$ gst-launch-1.0 rtspsrc location=rtsp://<rtsp-address> latency=0 buffer-mode=auto ! decodebin ! autovideosink
gst-inspect-1.0
This tool is to inspect details of gstreamer plugins/elements
# list all available elements
$ gst-inspect-1.0
# list information regarding an element
$ gst-inspect-1.0 vp8dec
gst-discoverer-1.0
This tool can be used to list information regarding the media that GStreamer can extract
Reference
- [1] https://en.wikipedia.org/wiki/GStreamer
- [2] https://gstreamer.freedesktop.org/documentation/tutorials/basic/gstreamer-tools.html?gi-language=c
- [3] https://gstreamer.freedesktop.org/documentation/tools/gst-launch.html?gi-language=c
- [4] https://github.com/matthew1000/gstreamer-cheat-sheet/tree/master
- [5] https://www.wowza.com/blog/streaming-protocols