diff --git a/revid/revid.go b/revid/revid.go
index c5684984..2accc2f1 100644
--- a/revid/revid.go
+++ b/revid/revid.go
@@ -38,6 +38,7 @@ import (
 
 	"bitbucket.org/ausocean/av/device"
 	"bitbucket.org/ausocean/av/filter"
+	"bitbucket.org/ausocean/av/container/mts"
 	"bitbucket.org/ausocean/av/revid/config"
 	"bitbucket.org/ausocean/iot/pi/netsender"
 	"bitbucket.org/ausocean/utils/bitrate"
@@ -157,6 +158,7 @@ func (r *Revid) Start() error {
 	d := time.Duration(0)
 	if r.cfg.Input == config.InputAudio {
 		d = time.Duration(r.cfg.RecPeriod * float64(time.Second))
+		mts.RealTime.Set(time.Now()) // Enable timestamps in MTS output, if any.
 	} else if r.cfg.FileFPS != 0 {
 		d = time.Duration(1000/r.cfg.FileFPS) * time.Millisecond
 	}