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audiotestsrc - GStreamer
https://gstreamer.freedesktop.org/documentation/audiotestsrc/index.html
audiotestsrc. AudioTestSrc can be used to generate basic audio signals. It support several different waveforms and allows to set the base frequency and volume. Some waveforms might use additional properties. Waveform specific notes: Gaussian white noise. This waveform produces white (zero mean) Gaussian noise.
faac - GStreamer
https://gstreamer.freedesktop.org/documentation/faac/index.html
faac encodes raw audio to AAC (MPEG-4 part 3) streams. Example launch line gst-launch-1.0 audiotestsrc wave=sine num-buffers=100 ! audioconvert ! faac ! matroskamux ! filesink location=sine.mkv Encode a sine beep as aac and write to matroska container.
Is there a way to encode HE-AAC(AAC LC SBR) streams …
https://stackoverflow.com/questions/67100977/is-there-a-way-to-encode-he-aacaac-lc-sbr-streams-using-gstreamer-with-the-aud
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 ...
audiotestsrc - Massachusetts Institute of Technology
https://stuff.mit.edu/afs/athena/system/amd64_deb50/os/usr/share/gtk-doc/html/gst-plugins-base-plugins-0.10/gst-plugins-base-plugins-audiotestsrc.html
AudioTestSrc can be used to generate basic audio signals. It support several different waveforms and allows to set the base frequency and volume. Example launch line. gst-launch audiotestsrc ! audioconvert ! alsasink This pipeline produces a sine with default frequency, 440 Hz, and the default volume, 0.8 (relative to a maximum 1.0). ...
mfaacenc - GStreamer
https://gstreamer.freedesktop.org/documentation/mediafoundation/mfaacenc.html
This element encodes raw audio into AAC compressed data. Example pipelines gst-launch-1.0 -v audiotestsrc ! mfaacenc ! aacparse ! qtmux ! filesink location=audiotestsrc.mp4 This example pipeline will encode a test audio source to AAC using Media Foundation encoder, and muxes it in a mp4 container.
GstD - Interacting with Pipelines - Ridgerun
https://developer.ridgerun.com/wiki/index.php?title=GStreamer_Daemon_-_Interacting_with_Pipelines
Pause Pipelines. In order to pause a pipeline use the following command: pipeline_pause name Puts the pipeline named name in the PAUSED state. For example: ⇒ Gstd Commands: 1 pipeline_pause p1. would put the p1 pipeline into the paused state. The pipeline_pause command will typically fail for any of the following: No name was given.
Omx AAC decoder dm816x Raw format issue. - Processors ...
https://e2e.ti.com/support/processors-group/processors/f/processors-forum/452495/omx-aac-decoder-dm816x-raw-format-issue
If the stream is mono, internal codec performs mono to stereo. conversion. • Does not support run time configuration of its dynamic parameters using. the OMX_GetConfig and OMX_SetConfig apis. In AAC-LC, raw data format is not supported. To run the example you shall load the DPS firmware dm816x_c6xdsp.xe674 via firmware loader.
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