revert back to using PyAV instead of torchaudio (#961)
#598
| Job | Run time |
|---|---|
| 3m 14s | |
| 2m 13s | |
| 35s | |
| 6m 2s |
torchaudio (#961)
#598
| Job | Run time |
|---|---|
| 3m 14s | |
| 2m 13s | |
| 35s | |
| 6m 2s |