PTS Offset to Add Artificial Delay Not Working

Michiel Konstapel michiel at
Mon May 16 09:11:09 UTC 2022

You may need to ensure that you have at least 5 seconds of queue 
capacity, because the buffers will have to be held somewhere before they 
can be processed at the later PTS. I don't know if this needs to be 
before the probed pad, or before the downstream element that cares about 
the PTS (sink, muxer, mixer, encoder, ..?)
Kind regards,

On 16-05-2022 11:05, Abrar Shahriar via gstreamer-devel wrote:
> Hi,
> I tried to add 5 seconds (in ns) to the PTS values on the incoming 
> buffers in a probe, but I see no delay. I tried it for both audio 
> and video streams.
> What could be the reason for it not working? I thought PTS could be 
> used to adjust delay?
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