diff --git a/revid/revid.go b/revid/revid.go
index 75d06e76..e1ba16ad 100644
--- a/revid/revid.go
+++ b/revid/revid.go
@@ -211,6 +211,7 @@ func (r *Revid) reset(c config.Config) error {
 				}
 			case config.InputAudio:
 				st = mts.EncodeAudio
+				encOptions = append(encOptions, mts.TimeBasedPSI(time.Duration(r.cfg.PSITime)*time.Second))
 			default:
 				panic("unknown input type")
 			}
@@ -460,10 +461,16 @@ func (r *Revid) Start() error {
 	}
 	r.cfg.Logger.Log(logger.Info, "revid reset")
 
-	// Calculate delay between frames based on FileFPS.
+	// Calculate delay between frames based on FileFPS for Video or RecPeriod for audio.
 	d := time.Duration(0)
-	if r.cfg.FileFPS != 0 {
-		d = time.Duration(1000/r.cfg.FileFPS) * time.Millisecond
+	if r.cfg.Input == config.InputAudio {
+		if r.cfg.RecPeriod != 0 {
+			d = time.Duration(r.cfg.RecPeriod * float64(time.Second))
+		}
+	} else {
+		if r.cfg.FileFPS != 0 {
+			d = time.Duration(1000/r.cfg.FileFPS) * time.Millisecond
+		}
 	}
 
 	r.cfg.Logger.Log(logger.Debug, "starting input processing routine")