appsrc, timestamp and filesink

[Walter Lucetti]

Using std::chrono to calculate the "real timestamp" seems to be good. But
now I have another problem: after a bit of seconds where the stream seems
well synchronised, it starts "loosing frames". The signal "data-needed" is
requested more and more rarely, like if the pipeline cannot handle all the
data.

Can it be a "buffering problem" related to file writing?

-- 
Walter Lucetti

email: myzhar at gmail.com
web: www.robot-home.it - www.opencv.it
project:  http://myzharbot.robot-home.it

Il 05 Feb 2017 14:46, "Walter Lucetti" <myzhar at gmail.com> ha scritto:

> What I did was printing out the timestamp for the buffer at each "push
> frame" event... and effectively the timestamps were wrong: at the end of a
> 10 seconds recording I got about 5 seconds of time stamp.
>
> What I noticed is that my source has not a stable fps, varying from 30 fps
> to 25 fps...
>
> I thought to use std::chrono to calculate the time elapsed from one push
> to the next and use the "real" timestamp setting do-timestamp to false.
>
> Is there a more clever way to do this?
>
> --
> Walter Lucetti
>
> email: myzhar at gmail.com
> web: www.robot-home.it - www.opencv.it
> project:  http://myzharbot.robot-home.it
>
> Il 04 Feb 2017 20:43, "Arjen Veenhuizen" <arjen.veenhuizen at tno.nl> ha
> scritto:
>
> Apparently, the timestamps are incorrect. What you could do is insert the
> identity element before the videorate element and examine the timestamps by
> setting silent=false on that element. Next step would be to examine the
> timestamps before the encoder and see where things go wrong.
>
>
>
> --
> View this message in context: http://gstreamer-devel.966125.
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