Gstreamer: pipeline notes

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Get raw opus data from wav file

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gst-launch-1.0 filesrc location="input.wav" ! wavparse ! decodebin ! audioconvert ! audioresample ! opusenc ! audio/x-opus,rate=8000,channels=1 ! filesink location="output.opus"

Get raw aac data from wav file

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gst-launch-1.0 filesrc location="input.wav" ! wavparse ! decodebin ! audioconvert ! audio/x-raw,rate=8000,channels=1 ! faac ! audio/mpeg,rate=8000,channels=1,stream-format=raw ! multifilesink location="frame-%03d.aac" index=1

Get raw aac data from wav file in specific chunk size

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gst-launch-1.0 filesrc location="input.wav" ! wavparse ! decodebin ! audioconvert ! audio/x-raw,rate=8000,channels=1 ! audiobuffersplit output-buffer-duration=1/25 ! alawenc ! audio/x-alaw,rate=8000,channels=1 ! multifilesink location="frame-%03d.alaw" max-file-size=320 index=1

To be continued…