Any help will be appreciated. Is there a way to encode HE-AAC(AAC LC SBR) streams using GStreamer with the audiotestsrc? This is what I've tried, but I could only encode the audio to a general AAC LC stream, and I don't know if there are any available options in the gst aac encoders.
gst-launch-1.0 audiotestsrc ! capsfilter caps="audio/x-raw, format=(string)S16LE, layout=(string)interleaved, rate=(int)48000, channels=(int)6" ! audioconvert ! fdkaacenc ! matroskamux ! filesink location=test.mka