Trying to understand the latency tracer

[Guillaume Desmottes]

Yes they are.

You can also use gst-stats-1.0 to parse the generated log file and get 
some stats/metrics about the latency.

On 26/05/2019 19:06, Damian Vicino wrote:
> Thanks Nicolas,
> Those latencies are reported in nanoseconds, right?
>
> On Sat, May 25, 2019 at 6:39 PM Nicolas Dufresne <nicolas at ndufresne.ca 
> <mailto:nicolas at ndufresne.ca>> wrote:
>
>     Le vendredi 24 mai 2019 à 11:31 -0400, Damian Vicino a écrit :
>     > Hi,
>     > I found documentation on how to enable the GStreamer latency
>     tracer exporting variables from the shell as follows:
>     >
>     > export GST_TRACERS=latency
>     > export GST_DEBUG="GST_TRACER:7"
>     >
>     > As showed here
>     https://gstreamer.freedesktop.org/documentation/design/tracing.html?gi-language=c#print-reported-latencies-for-each-element
>     >
>     > I got log lines as the following one:
>     > 0:35:08.123456789     362   0x7f434c00fd40  TRACE    GST_TRACER
>     :0:: latency, src=(string)nicesrc4_src,
>     sink=(string)nicesink2_sink, time=(guint64)123456789,
>     ts=(guint64)1234567890123
>     >
>     > I couldn't find documentation of that are the meaning of the
>     different parts of that log line.
>     >
>     > Can someone point me to the right documentation or help me
>     understand what I'm reading there?
>
>     Per tracer documentation is a bit of a work in progress. Here's a
>     quick
>     guide:
>       src/sink: Name of the pad (this has been changed in newer GStreamer)
>       time: That's the actual amount of time it too to process one buffer
>       ts: That's when was this latency reported, should mostly match
>
>     >
>     > Best regards,
>     > Damian
>     >
>     >
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