diff --git a/revid/revid.go b/revid/revid.go
index 756a51b0..c74cfce5 100644
--- a/revid/revid.go
+++ b/revid/revid.go
@@ -219,6 +219,7 @@ func (r *Revid) reset(c config.Config) error {
 				case codecutil.MJPEG:
 					st = mts.EncodeMJPEG
 					encOptions = append(encOptions, mts.TimeBasedPSI(time.Duration(r.cfg.PSITime)*time.Second))
+					r.cfg.CBR = true
 				default:
 					panic("unknown input codec for v4l or input file input")
 				}