mixing datapath framegrabber with composite input

Mikael Kermorgant mikael.kermorgant at gmail.com
Wed Jun 10 06:38:12 PDT 2015


Hello,

In case it might be useful, I activated more debug on my command, which
gace me this output : http://ur1.ca/msd8i

Any idea or suggestion ?

Regards
Mikael

On Tue, Jun 9, 2015 at 3:55 PM, Mikael Kermorgant <
mikael.kermorgant at gmail.com> wrote:

> Hello,
>
> I'm trying to mix two videos captured from /dev/video0 and /dev/video1
> into one, on an old ubuntu 12.04.
> I have successfully mixed videotestsrc sources, one videtestsrc with one
> from /dev/videoN
>
> But when I try to combine /dev/video0 and /dev/video1, it fails.
>
> Here's the pipeline :
>
> gst-launch-0.10  -v \
>         v4l2src device=/dev/video0 ! video/x-raw-rgb ! videoscale !
> video/x-raw-rgb,width=320,height=180 ! ffmpegcolorspace ! \
>         videomixer name=mix ! \
>         x264enc tune=zerolatency byte-stream=true bitrate=2048 ! queue !
> filesink location="/tmp/pipcamera.avi" \
>         v4l2src device=/dev/dada0 ! video/x-raw-yuv,
> width=1280,height=1024, framerate=10/1 !  videoscale ! video/x-raw-yuv,
> format=\(fourcc\)YUY2, width=320,height=180 ! ffmpegcolorspace ! videobox
> border-alpha=1.0 top=0  left=-320 ! mix.
>
> Main error is :
>
> ERROR: from element /GstPipeline:pipeline0/GstV4l2Src:v4l2src0: Internal
> data flow error.
> streaming task paused, reason not-negotiated (-4)
>
> Full output is here : http://ur1.ca/ms1uh
>
> Would you have any idea about what's wrong  ?
> Best regards
>
> --
> Mikael Kermorgant
>



-- 
Mikael Kermorgant
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