<div dir="ltr">Hi,<br><br>I need to plot wave form of audio as explained here <a href="http://stackoverflow.com/questions/16509906/ffmpeg-can-i-draw-an-audio-channel-as-an-image" target="_blank">http://stackoverflow.com/questions/16509906/ffmpeg-can-i-draw-an-audio-channel-as-an-image</a>,
I found that some command line option for plotting to image, but my
requirement is do from c++ code and draw live waveform on UI. I am able
to decode the audio data successfully, but no idea how the data is
stored in `AVFrame` `extended_data` pointer. The audio can be either
stereo or mono. <br><br> AVFrame *frame=av_frame_alloc();<br> while(av_read_frame(container,&packet)>=0)<br> {<br> <br> int len=avcodec_decode_audio4(ctx,frame,&frameFinished,&packet);<br> frame->extended_data //how data stored inside the pointer <br> ........................<br> }</div>