Add a buffer filled with audio data samples to movie ‘moviePtr’.
The movie must have been created in ‘CreateMovie’ with an options string that
enables writing of an audio track into the movie, otherwise this function will
You enable writing of audio tracks by adding the keyword ‘AddAudioTrack’ to the
Alternatively, if your options string is a gst-launch style pipeline
description, it must contain one pipeline element with a name option of
‘audioBuffer’ must be ‘numChannels’ rows by ‘numSamples’ columns double matrix
of audio data. Each row encodes one audio channel, each column element in a row
encodes a sample. E.g., a 2-by-48000 matrix would encode 48000 samples for a two
channel stereo sound track.
Sample values must lie in the range between -1.0 and +1.0.
The audio buffer is converted into a movie specific sound format and then
appended to the audio samples already stored in the audio track.