gstreamer

debug

mkdir ./tmp
export GST_DEBUG_DUMP_DOT_DIR=./tmp/

# ... run pipeline

cd tmp
dot -Tpng x.xx.xx.xxxxxxxxx-gst-launch.FOO.dot > graph.png

hardware decode

F=videos/traffico01-1152x720-1610kb.mkv
gst-launch-1.0 filesrc location=$F ! matroskademux ! queue ! h264parse ! omxh264dec ! autovideoconvert ! xvimagesink

hardware encode

...

</code>