- "rate='unknown', totalReceived={rec}, totalSent={sen}, frameLoss={los},"
- " latencyStream0(usec)=-1/-1/-1, latencyStream1(usec)=-1/-1/-1,"
- " targetDuration='manual'".format(
- rec=total_rcvd, sen=total_sent, los=total_lost))
+ f"rate='unknown', totalReceived={total_rcvd}, totalSent={total_sent}, "
+ f"frameLoss={total_lost}, latencyStream0(usec)=-1/-1/-1, "
+ f"latencyStream1(usec)=-1/-1/-1, targetDuration='manual'"
+ )
+