low latency appsrc pipeline

[Cyril Baletaud]

Hi Emmanuel

In Jiguiviou, i have 3 backends.

   - gstreamer CPU, xvimagesink in QWidget, works well but CPU expensive
   with high frame rate or big image.
   - gstreamer GPU, glimagesink in QWidget, very good for YUV video non
   planar, less CPU but does not support BAYER image
   - native opengl with QOpenGL class, not ready but very efficient, BAYER
   compatible (all color conversion with shaders)

>From GiGE camera to screen, latency is less than 80 ms . Mesured with
timestamp on overlay, camera filming the screen.

2017-04-19 15:11 GMT+02:00 Emmanuel Pacaud <emmanuel.pacaud at lapp.in2p3.fr>:

> Hi,
>
> In a camera video viewer I'm developping, I'm trying to achiveve the
> lowest latency possible for the video output.
>
> The pipeline I'm using is based on appsrc, do some color conversion, then
> display the output with gtksink or gtkglsink.
>
> What I would like is a pipeline that displays the frames as they are
> acquired from the camera. What would be the best way to achieve this result
> ?
>
> Currently, for some unkwnon reason, there is sometime around 1 second or
> more of latency.
>
> For reference, the corresponding code is here:
>
> https://github.com/AravisProject/aravis/blob/master/viewer/
> arvviewer.c#L880
>
> Thanks.
>
>         Cheers,
>
>                 Emmanuel.
>
> _______________________________________________
> gstreamer-devel mailing list
> gstreamer-devel at lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.freedesktop.org/archives/gstreamer-devel/attachments/20170419/3fe989e3/attachment.html>