audiotestsrc timing information

[Anand Sivaram]

Dear All,

Is there any way, by which some audible time stamp information could be
added to audiotestsrc plugin?  What I mean is similar to videotestsrc !
timeoverlay in the case of video.

Basically, I would like to do delay measurement for video and audio over
RTP.  I could do for the video by the following.

                                 / autovideosink
videotestsrc - timeoverlay - tee
                                 \ x264enc - rtph264pay - udpsink
udpsrc - rtph264depay - decodebin - autovideosink


Now, If I could compare both autovideosink simultaneously, I could get an
estimate of video encoder/decoder rtp packetzer/depacketizer delay.

I would like to do similar for AAC audio.  If I could an "equivalent" of
timeoverlay for audio, then I could use the same concept.

Any idea would be really appreciated.

Thanks and Regards

Anand
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