Can ffmpeg convert audio from raw PCM to WAV?

Question

I can convert wav file to pcm

ffmpeg -i file.wav -f s16le -acodec pcm_s16le file.pcm

How can I revert this operation?

Answer 1

ffmpeg -f s16le -ar 8000 -ac 2 -i out.pcm -ar 44100 -ac 2 out.wav