diff --git a/revid/revid.go b/revid/revid.go
index bcb120dd..d3cf36bb 100644
--- a/revid/revid.go
+++ b/revid/revid.go
@@ -346,6 +346,12 @@ func (r *Revid) setupPipeline(mtsEnc func(dst io.WriteCloser, rate float64) (io.
 
 	case config.InputFile:
 		r.input = file.New()
+		switch r.cfg.InputCodec {
+		case codecutil.H264:
+			r.lexTo = h264.Lex
+		case codecutil.MJPEG:
+			r.lexTo = mjpeg.Lex
+		}
 
 	case config.InputRTSP:
 		r.input = geovision.New(r.cfg.Logger)