webcam & mpegps
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Hi,
The following pipeline is not working. gst-launch -v v4l2src device=/dev/video0 ! ffenc_mpeg2video ! mpegpsmux ! filesink location=test.mpg It says: [...] gstbasesrc.c(2574): gst_base_src_loop (): /GstPipeline:pipeline0/GstV4l2Src:v4l2src0: streaming task paused, reason not-negotiated (-4) Execution ended after 1004544165 ns. [...] Could anybody explain why, please? Regards, -- Andrés González T: 91 458 51 19 (ext:165) HI-IBERIA INGENIERIA Y PROYECTOS C/ Bolivia 5 - Madrid - 28016 ------------------------------------------------------------------------------ The modern datacenter depends on network connectivity to access resources and provide services. The best practices for maximizing a physical server's connectivity to a physical network are well understood - see how these rules translate into the virtual world? http://p.sf.net/sfu/oracle-sfdevnlfb _______________________________________________ gstreamer-devel mailing list [hidden email] https://lists.sourceforge.net/lists/listinfo/gstreamer-devel |
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On Fri, 2011-02-04 at 09:54 +0100, Andres Gonzalez wrote:
> The following pipeline is not working. > > gst-launch -v v4l2src device=/dev/video0 ! ffenc_mpeg2video ! mpegpsmux > ! filesink location=test.mpg > > It says: > [...] > gstbasesrc.c(2574): gst_base_src_loop (): > /GstPipeline:pipeline0/GstV4l2Src:v4l2src0: > streaming task paused, reason not-negotiated (-4) > Execution ended after 1004544165 ns. > [...] > > Could anybody explain why, please? Most likely this is because your video camera/driver doesn't support the format(s) that ffenc_mpeg2video accepts as input. You could try adding an ffmpegcolorspace element between v4l2src and ffenc_mpeg2video. Cheers -Tim ------------------------------------------------------------------------------ The modern datacenter depends on network connectivity to access resources and provide services. The best practices for maximizing a physical server's connectivity to a physical network are well understood - see how these rules translate into the virtual world? http://p.sf.net/sfu/oracle-sfdevnlfb _______________________________________________ gstreamer-devel mailing list [hidden email] https://lists.sourceforge.net/lists/listinfo/gstreamer-devel |
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In reply to this post by Andrés González
> gst-launch -v v4l2src device=/dev/video0 ! ffenc_mpeg2video ! mpegpsmux
> ! filesink location=test.mpg Just a quick guess - most probably you need ffmpegcolorspace filter after v4l2src. HTH, Andrey. ------------------------------------------------------------------------------ The modern datacenter depends on network connectivity to access resources and provide services. The best practices for maximizing a physical server's connectivity to a physical network are well understood - see how these rules translate into the virtual world? http://p.sf.net/sfu/oracle-sfdevnlfb _______________________________________________ gstreamer-devel mailing list [hidden email] https://lists.sourceforge.net/lists/listinfo/gstreamer-devel |
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Many thanks for the replies, but still no luck.
$ gst-launch -v v4l2src device=/dev/video0 ! ffmpegcolorspace ! ffenc_mpeg2video ! mpegpsmux ! filesink location=test.mpg I also copy&paste the traces: Estableciendo el conducto a PAUSA … (Setting pipeline to PAUSE) /GstPipeline:pipeline0/GstV4l2Src:v4l2src0.GstPad:src: caps = video/x-raw-yuv, format=(fourcc)I420, width=(int)640, height=(int)480, interlaced=(boolean)false, framerate=(fraction)22/1 El conducto está vivo y no necesita PREPARARSE … (The pipeline is alive and does not need to GET READY) Estableciendo el conducto a REPRODUCIENDO … (Setting pipeline to PLAYING) New clock: GstSystemClock /GstPipeline:pipeline0/GstFFMpegCsp:ffmpegcsp0.GstPad:src: caps = video/x-raw-yuv, format=(fourcc)I420, width=(int)640, height=(int)480, interlaced=(boolean)false, framerate=(fraction)22/1 /GstPipeline:pipeline0/GstFFMpegCsp:ffmpegcsp0.GstPad:sink: caps = video/x-raw-yuv, format=(fourcc)I420, width=(int)640, height=(int)480, interlaced=(boolean)false, framerate=(fraction)22/1 ERROR: del elemento /GstPipeline:pipeline0/GstV4l2Src:v4l2src0: Error en el flujo de datos interno. Información adicional de depuración: gstbasesrc.c(2574): gst_base_src_loop (): /GstPipeline:pipeline0/GstV4l2Src:v4l2src0: streaming task paused, reason not-negotiated (-4) Execution ended after 994073061 ns. Estableciendo el conducto a PAUSA … (setting pipeline to PAUSE) Estableciando el conducto a PREPARADO … (setting pipeline to READY) /GstPipeline:pipeline0/GstFFMpegCsp:ffmpegcsp0.GstPad:src: caps = NULL /GstPipeline:pipeline0/GstFFMpegCsp:ffmpegcsp0.GstPad:sink: caps = NULL /GstPipeline:pipeline0/GstV4l2Src:v4l2src0.GstPad:src: caps = NULL Estableciendo el conducto a NULL … Liberando la tubería… (releasing the pipeline) -- Andrés González T: 91 458 51 19 (ext:165) HI-IBERIA INGENIERIA Y PROYECTOS C/ Bolivia 5 - Madrid - 28016 ------------------------------------------------------------------------------ The modern datacenter depends on network connectivity to access resources and provide services. The best practices for maximizing a physical server's connectivity to a physical network are well understood - see how these rules translate into the virtual world? http://p.sf.net/sfu/oracle-sfdevnlfb _______________________________________________ gstreamer-devel mailing list [hidden email] https://lists.sourceforge.net/lists/listinfo/gstreamer-devel |
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I make it working by 'forcing' ffmpecolorspace with a filter
gst-launch -v v4l2src ! ffmpegcolorspace! video/x-raw-yuv, width=320, height=240, framerate=\(fraction\)30/1, format=\(fourcc\)I420 ! ffenc_mpeg2video ! mpegpsmux ! filesink location=test.mpg Le 04/02/2011 14:00, Andres Gonzalez a écrit : > Many thanks for the replies, but still no luck. > > $ gst-launch -v v4l2src device=/dev/video0 ! ffmpegcolorspace ! > ffenc_mpeg2video ! mpegpsmux ! filesink location=test.mpg > > I also copy&paste the traces: > > Estableciendo el conducto a PAUSA … (Setting pipeline to PAUSE) > /GstPipeline:pipeline0/GstV4l2Src:v4l2src0.GstPad:src: caps = > video/x-raw-yuv, format=(fourcc)I420, width=(int)640, height=(int)480, > interlaced=(boolean)false, framerate=(fraction)22/1 > El conducto está vivo y no necesita PREPARARSE … (The pipeline is alive > and does not need to GET READY) > Estableciendo el conducto a REPRODUCIENDO … (Setting pipeline to PLAYING) > New clock: GstSystemClock > /GstPipeline:pipeline0/GstFFMpegCsp:ffmpegcsp0.GstPad:src: caps = > video/x-raw-yuv, format=(fourcc)I420, width=(int)640, height=(int)480, > interlaced=(boolean)false, framerate=(fraction)22/1 > /GstPipeline:pipeline0/GstFFMpegCsp:ffmpegcsp0.GstPad:sink: caps = > video/x-raw-yuv, format=(fourcc)I420, width=(int)640, height=(int)480, > interlaced=(boolean)false, framerate=(fraction)22/1 > ERROR: del elemento /GstPipeline:pipeline0/GstV4l2Src:v4l2src0: Error en > el flujo de datos interno. > Información adicional de depuración: > gstbasesrc.c(2574): gst_base_src_loop (): > /GstPipeline:pipeline0/GstV4l2Src:v4l2src0: > streaming task paused, reason not-negotiated (-4) > Execution ended after 994073061 ns. > Estableciendo el conducto a PAUSA … (setting pipeline to PAUSE) > Estableciando el conducto a PREPARADO … (setting pipeline to READY) > /GstPipeline:pipeline0/GstFFMpegCsp:ffmpegcsp0.GstPad:src: caps = NULL > /GstPipeline:pipeline0/GstFFMpegCsp:ffmpegcsp0.GstPad:sink: caps = NULL > /GstPipeline:pipeline0/GstV4l2Src:v4l2src0.GstPad:src: caps = NULL > Estableciendo el conducto a NULL … > Liberando la tubería… (releasing the pipeline) > > > > ------------------------------------------------------------------------------ The modern datacenter depends on network connectivity to access resources and provide services. The best practices for maximizing a physical server's connectivity to a physical network are well understood - see how these rules translate into the virtual world? http://p.sf.net/sfu/oracle-sfdevnlfb _______________________________________________ gstreamer-devel mailing list [hidden email] https://lists.sourceforge.net/lists/listinfo/gstreamer-devel |
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In reply to this post by Andrés González
On Fri, 2011-02-04 at 11:00 +0100, Andres Gonzalez wrote:
> Many thanks for the replies, but still no luck. In that case, running the pipeline with GST_DEBUG is often a good idea, to see if anything suspicious pops up, e.g.: $ GST_DEBUG=*:2 gst-launch-0.10 .... $ GST_DEBUG=*:3 gst-launch-0.10 .... $ GST_DEBUG=*:4 gst-launch-0.10 .... etc. > /GstPipeline:pipeline0/GstFFMpegCsp:ffmpegcsp0.GstPad:src: caps = > video/x-raw-yuv, format=(fourcc)I420, width=(int)640, height=(int)480, > interlaced=(boolean)false, framerate=(fraction)22/1 > /GstPipeline:pipeline0/GstFFMpegCsp:ffmpegcsp0.GstPad:sink: caps = > video/x-raw-yuv, format=(fourcc)I420, width=(int)640, height=(int)480, > interlaced=(boolean)false, framerate=(fraction)22/1 > ERROR: del elemento /GstPipeline:pipeline0/GstV4l2Src:v4l2src0: Error en > el flujo de datos interno. > Información adicional de depuración: > gstbasesrc.c(2574): gst_base_src_loop (): > /GstPipeline:pipeline0/GstV4l2Src:v4l2src0: > streaming task paused, reason not-negotiated (-4) This means there's a problem with caps negotiation still. ffmpegcsp's src pad is the last in the pipeline that got caps set on it, that means ffenc_mpeg2video rejected the input caps. It looks like this is due to the 22fps framerate. Try adding a ... ! videorate ! video/x-raw-yuv,framerate=25/1 ! ffenc_mpeg2video .. Cheers -Tim ------------------------------------------------------------------------------ The modern datacenter depends on network connectivity to access resources and provide services. The best practices for maximizing a physical server's connectivity to a physical network are well understood - see how these rules translate into the virtual world? http://p.sf.net/sfu/oracle-sfdevnlfb _______________________________________________ gstreamer-devel mailing list [hidden email] https://lists.sourceforge.net/lists/listinfo/gstreamer-devel |
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In reply to this post by Andrés González
Am 04.02.2011 10:54, schrieb Andres Gonzalez:
> Hi, > > The following pipeline is not working. > > gst-launch -v v4l2src device=/dev/video0 ! ffenc_mpeg2video ! mpegpsmux > ! filesink location=test.mpg > > It says: > [...] > gstbasesrc.c(2574): gst_base_src_loop (): > /GstPipeline:pipeline0/GstV4l2Src:v4l2src0: > streaming task paused, reason not-negotiated (-4) > Execution ended after 1004544165 ns. > [...] > > Could anybody explain why, please? > > Regards, > what is v4l-info telling about your webcam. Some webcams only output mjpeg. Try gst-launch -v v4l2src device=/dev/video0 ! decodebin2 ! ffenc_mpeg2video ! mpegpsmux ! filesink location=test.mpg Stefan ------------------------------------------------------------------------------ The modern datacenter depends on network connectivity to access resources and provide services. The best practices for maximizing a physical server's connectivity to a physical network are well understood - see how these rules translate into the virtual world? http://p.sf.net/sfu/oracle-sfdevnlfb _______________________________________________ gstreamer-devel mailing list [hidden email] https://lists.sourceforge.net/lists/listinfo/gstreamer-devel |
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