When I run the code, ffmpeg does not like the "-c:a pmc_s32e" part. I get
an error stating: "-c:a Protocol not found. Did you mean file:-c:a?". When
I change my code to "file:-c:a" I then get the error: "file:-c:a: No such
file or directory".
The reason I need this piece is because ffmpeg defaults to outputting
pcm_s16le audio when I need pcm_s32be.