v4l2 element stay in READY state

[Sérgio Agostinho]

Hi Russel,

If you do

gst-launch-1.0 videotestsrc ! v4l2sink

do you see video on your v4l2device? Also, if you do

gst-launch-1.0 rtspsrc location=rtspaddress ! decodebin ! autovideosink

Do you see your rtsp video stream playing on a window?

Cheers


2015-02-11 7:50 GMT+01:00 Russell <danrenjian at gmail.com>:

> Hi,
>
> I was trying this pipeline to feed rtsp stream into a v4l2 virtual
> loopback device:
> gst-launch-1.0 rtspsrc location=rtspaddress ! decodebin ! v4l2sink
>
> Terminal gave this output and stops, and there are no video in the v4l2
> device:
> Progress: (request) Sending PLAY request
> Progress: (request) Sending PLAY request
> Progress: (request) Sent PLAY request
>
>
> So I am implementing the pipeline in c to see what happened. decodebin and
> v4l2sink are added and linked on on pad-added event. Eventually I found the
> v4l2sink element stay in READY state while the other two are PLAYING. I
> have set v4l2sink to PLAYING asynchronously but the state does not change.
>
> What is the matter here? and where I can find any detailed reason why
> v4l2sink cannot go to PLAYING state?
>
> Thanks in advance.
>
> Sincerely,
> Russell
>
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>
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