Video stream timestamps problem!

Tarek El-Sherbiny tarek.elsherbiny at
Thu Dec 13 03:31:41 PST 2012

Hi Maciek,

Have you checked freescale's forum? you might find some useful info.

For me I'm not using ffmpg from gstreamer. I'm using a locally modified
version from
To connect to a camera simply I'm calling:
Filename =

I tried to use VPU libs but there were so many errors like delay's and
Gstreamer is more reliable for some reason.

The main gstreamer config:
g_object_set(G_OBJECT(ctx->appsrc), "is-live", TRUE, "block",
FALSE,"do-timestamp", TRUE,

That works with mfw_v4lsink but is not really what I want.

I still need to figure out how to use mfw_isink to utilise scaling and
overlay features.
If you you have more info on this that will be great.


On Thu, Dec 13, 2012 at 10:00 AM, bamboosso <laski.maciej at> wrote:

> Hello Tarek,
> Well, freescale also provide codeck pack with driverd to their VPU, which
> are then used in gstreamer plugin. But gstreamer is ok tu use I think.
> My problem is that when I record video from rtsp camera no frames are
> dropped. And when I use VPU, vpu drops a lot of frames according to
> timestams problems so I have a lot of artefacts on playback and I don't
> know
> why because timestamps that outs from rtph264depay are set.
> Do you use ffmpeg provided with gstreamer?
> Do you have to set proper caps od srcpad for your appsink?
> Maybe you can share some sample code how to use ffmpeg to grab data from
> camera?
> This issue id driving me crazy.
> Thanks
>  Maciek
> --
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