How to Upload and Save an Audio file (.wav format) in Dash App using Python?

[kk00826306]

I have to upload an audio file (.wav format) in the Dash UI and save that Audio file locally.

[AIMPED]

HI @kk00826306 welcome to the community.

For the upload you can use dcc.Upload(), you will need to take care of the encoding though. Here a related topis:

Upload a voice file and process it in python in the backend

Here’s the solution to handle mpeg as well as wav audio files inside your callback: def parse_contents_audio(contents): data = contents.decode('utf-8') rawdata = data.split(',')[1] if filetype == 'mpeg': fh = open("/Yourpath/audio.mp3", "wb") fh.write(contents.decode('base64')) fh.close() elif filetype =='x-wav': fh = open("/Yourpath/audio.wav", "wb") fh.write(rawdata.decode('base64')) fh.close()

As far as storing the uploaded file it depends on the size of it. If it’s small, and JSON serializable you can use a dcc.Store(). Else you could use dash-extensions ServersideOutput

ServersideOutputTransform

[kk00826306]

Thanks for the reply

[sadada333]

Thankyou Brother