some question

[lcat]

i look this project,it draw canvs after recorder，how can draw canvs in recording

[kott]

With the current way I have this set up you cannot have a live rendering of the waveform. This is because the audio data is processed on the server after the recording has completed. There might be a way to obtain the audio sample data with javascript while you're capturing the audio, however I do not have an exact answer to that question. This is something I will have to look into in the future.