I am trying to upsample a video by existing frame interpolation techniques. In the process, I realize that I also need to interpolate the audio signal for the new frames so that the audio signal is in sync with the frames of the new video.
The new upsampled video should have the same frame rate as the original input video, and will be a slowed down version of the input video.
Is there any way I can proceed to do the part of the audio interpolation? If the frame rate is F and the audio sampling rate is Fs, then Fs/F audio samples are associated with each frame of the original video.
Any insight on how to proceed regarding this idea would be helpful.