<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"> <head> <meta http-equiv=Content-Type content="text/html; charset=utf-8"> <meta name=Generator content="Microsoft Word 12 (filtered medium)"> <style>  </style>  </head> <body lang=PL link=blue vlink=purple> <div class=Section1> Hello,<o:p></o:p> <o:p> </o:p> I’m trying to have two parallel “pipelines” in GstPipeline. One is supposed to read from udp and stream to rtmp, the second one from /dev/video0 to rtmp. I tested with output set to screen (autovideosink) and that fails also, I get first frame of video from udp, and then it locks – the second (v4l2) window shows whatever was in the background.<o:p></o:p> <o:p> </o:p> I can run both of them separately, but when I try to start a GstPipeline with both of them, I get errors: <o:p></o:p> <o:p> </o:p> 0:00:04.907879045 6393 0x7f190420e190 ERROR v4l2 gstv4l2bufferpool.c:551:gst_v4l2_buffer_pool_streamon:<v4l2source:pool:src> error with STREAMON 22 (Invalid argument)<o:p></o:p> 0:00:04.907934968 6393 0x7f190420e190 WARN v4l2 gstv4l2bufferpool.c:994:gst_v4l2_buffer_pool_poll:<v4l2source> error: poll error 1: Invalid argument (22)<o:p></o:p> 0:00:04.908032710 6393 0x7f190420e190 WARN v4l2src gstv4l2src.c:749:gst_v4l2src_create:<v4l2source> error: Failed to allocate a buffer<o:p></o:p> GStreamer ERROR: gstv4l2bufferpool.c(994): gst_v4l2_buffer_pool_poll (): /GstPipeline:pipeline/GstBin:pipeline_0/GstBin:source/GstV4l2Src:v4l2source:<o:p></o:p> poll error 1: Invalid argument (22)<o:p></o:p> 0:00:04.908091528 6393 0x7f190420e190 WARN basesrc gstbasesrc.c:2933:gst_base_src_loop:<v4l2source> error: Internal data flow error.<o:p></o:p> 0:00:04.908103434 6393 0x7f190420e190 WARN basesrc gstbasesrc.c:2933:gst_base_src_loop:<v4l2source> error: streaming task paused, reason error (-5)<o:p></o:p> <o:p> </o:p> What could be causing this kind of problem? Where I could make a conflict? I run a similar pipeline from the command line and it run without problems (although I’m not sure, if it creates one or two main GstPipeline objects).<o:p></o:p> <o:p> </o:p> The full log looks like this (GST_DEBUG=*:3,v4l2src:5):<o:p></o:p> <o:p> </o:p> 0:00:04.904773101 6393 0x7f190420e190 DEBUG v4l2src gstv4l2src.c:306:gst_v4l2src_negotiate:<v4l2source> caps of src: video/x-raw, format=(string)YUY2, width=(int)1600, height=(int)1200, pixel-aspect-ratio=(fraction)1/1, interlace-mode=(string)progressive, framerate=(fraction){ 5/1, 5/2 }; video/x-raw, format=(string)YUY2, width=(int)1280, height=(int)1024, pixel-aspect-ratio=(fraction)1/1, interlace-mode=(string)progressive, framerate=(fraction){ 15/2, 5/1 }; video/x-raw, format=(string)YUY2, width=(int)1280, height=(int)960, pixel-aspect-ratio=(fraction)1/1, interlace-mode=(string)progressive, framerate=(fraction){ 15/2, 5/1 }; video/x-raw, format=(string)YUY2, width=(int)800, height=(int)600, pixel-aspect-ratio=(fraction)1/1, interlace-mode=(string)progressive, framerate=(fraction){ 20/1, 15/1 }; video/x-raw, format=(string)YUY2, width=(int)640, height=(int)480, pixel-aspect-ratio=(fraction)1/1, interlace-mode=(string)progressive, framerate=(fraction){ 30/1, 15/1 }; video/x-raw, format=(string)YUY2, width=(int)352, height=(int)288, pixel-aspect-ratio=(fraction)1/1, interlace-mode=(string)progressive, framerate=(fraction){ 30/1, 15/1 }; video/x-raw, format=(string)YUY2, width=(int)320, height=(int)240, pixel-aspect-ratio=(fraction)1/1, interlace-mode=(string)progressive, framerate=(fraction){ 30/1, 15/1 }; video/x-raw, format=(string)YUY2, width=(int)176, height=(int)144, pixel-aspect-ratio=(fraction)1/1, interlace-mode=(string)progressive, framerate=(fraction){ 30/1, 15/1 }; video/x-raw, format=(string)YUY2, width=(int)160, height=(int)120, pixel-aspect-ratio=(fraction)1/1, interlace-mode=(string)progressive, framerate=(fraction){ 30/1, 15/1 }; image/jpeg, width=(int)1600, height=(int)1200, pixel-aspect-ratio=(fraction)1/1, framerate=(fraction){ 15/1, 15/2 }; image/jpeg, width=(int)1280, height=(int)1024, pixel-aspect-ratio=(fraction)1/1, framerate=(fraction){ 15/1, 10/1 }; image/jpeg, width=(int)1280, height=(int)960, pixel-aspect-ratio=(fraction)1/1, framerate=(fraction){ 15/1, 10/1 }; image/jpeg, width=(int)800, height=(int)600, pixel-aspect-ratio=(fraction)1/1, framerate=(fraction){ 15/1, 10/1 }; image/jpeg, width=(int)640, height=(int)480, pixel-aspect-ratio=(fraction)1/1, framerate=(fraction){ 30/1, 15/1 }; image/jpeg, width=(int)352, height=(int)288, pixel-aspect-ratio=(fraction)1/1, framerate=(fraction){ 30/1, 15/1 }; image/jpeg, width=(int)320, height=(int)240, pixel-aspect-ratio=(fraction)1/1, framerate=(fraction){ 30/1, 15/1 }; image/jpeg, width=(int)176, height=(int)144, pixel-aspect-ratio=(fraction)1/1, framerate=(fraction){ 30/1, 15/1 }; image/jpeg, width=(int)160, height=(int)120, pixel-aspect-ratio=(fraction)1/1, framerate=(fraction){ 30/1, 15/1 }<o:p></o:p> 0:00:04.904891005 6393 0x7f190420e190 DEBUG v4l2src gstv4l2src.c:307:gst_v4l2src_negotiate:<v4l2source> thiscaps: video/x-raw, format=(string)YUY2, width=(int)1600, height=(int)1200, pixel-aspect-ratio=(fraction)1/1, interlace-mode=(string)progressive, framerate=(fraction){ 5/1, 5/2 }; video/x-raw, format=(string)YUY2, width=(int)1280, height=(int)1024, pixel-aspect-ratio=(fraction)1/1, interlace-mode=(string)progressive, framerate=(fraction){ 15/2, 5/1 }; video/x-raw, format=(string)YUY2, width=(int)1280, height=(int)960, pixel-aspect-ratio=(fraction)1/1, interlace-mode=(string)progressive, framerate=(fraction){ 15/2, 5/1 }; video/x-raw, format=(string)YUY2, width=(int)800, height=(int)600, pixel-aspect-ratio=(fraction)1/1, interlace-mode=(string)progressive, framerate=(fraction){ 20/1, 15/1 }; video/x-raw, format=(string)YUY2, width=(int)640, height=(int)480, pixel-aspect-ratio=(fraction)1/1, interlace-mode=(string)progressive, framerate=(fraction){ 30/1, 15/1 }; video/x-raw, format=(string)YUY2, width=(int)352, height=(int)288, pixel-aspect-ratio=(fraction)1/1, interlace-mode=(string)progressive, framerate=(fraction){ 30/1, 15/1 }; video/x-raw, format=(string)YUY2, width=(int)320, height=(int)240, pixel-aspect-ratio=(fraction)1/1, interlace-mode=(string)progressive, framerate=(fraction){ 30/1, 15/1 }; video/x-raw, format=(string)YUY2, width=(int)176, height=(int)144, pixel-aspect-ratio=(fraction)1/1, interlace-mode=(string)progressive, framerate=(fraction){ 30/1, 15/1 }; video/x-raw, format=(string)YUY2, width=(int)160, height=(int)120, pixel-aspect-ratio=(fraction)1/1, interlace-mode=(string)progressive, framerate=(fraction){ 30/1, 15/1 }; image/jpeg, width=(int)1600, height=(int)1200, pixel-aspect-ratio=(fraction)1/1, framerate=(fraction){ 15/1, 15/2 }; image/jpeg, width=(int)1280, height=(int)1024, pixel-aspect-ratio=(fraction)1/1, framerate=(fraction){ 15/1, 10/1 }; image/jpeg, width=(int)1280, height=(int)960, pixel-aspect-ratio=(fraction)1/1, framerate=(fraction){ 15/1, 10/1 }; image/jpeg, width=(int)800, height=(int)600, pixel-aspect-ratio=(fraction)1/1, framerate=(fraction){ 15/1, 10/1 }; image/jpeg, width=(int)640, height=(int)480, pixel-aspect-ratio=(fraction)1/1, framerate=(fraction){ 30/1, 15/1 }; image/jpeg, width=(int)352, height=(int)288, pixel-aspect-ratio=(fraction)1/1, framerate=(fraction){ 30/1, 15/1 }; image/jpeg, width=(int)320, height=(int)240, pixel-aspect-ratio=(fraction)1/1, framerate=(fraction){ 30/1, 15/1 }; image/jpeg, width=(int)176, height=(int)144, pixel-aspect-ratio=(fraction)1/1, framerate=(fraction){ 30/1, 15/1 }; image/jpeg, width=(int)160, height=(int)120, pixel-aspect-ratio=(fraction)1/1, framerate=(fraction){ 30/1, 15/1 }<o:p></o:p> 0:00:04.905109735 6393 0x7f190420e190 DEBUG v4l2src gstv4l2src.c:315:gst_v4l2src_negotiate:<v4l2source> caps of peer: video/x-raw, format=(string)I420, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ]; video/x-raw, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ], format=(string){ I420, YV12, YUY2, UYVY, AYUV, RGBx, BGRx, xRGB, xBGR, RGBA, BGRA, ARGB, ABGR, RGB, BGR, Y41B, Y42B, YVYU, Y444, v210, v216, NV12, NV21, NV16, NV24, GRAY8, GRAY16_BE, GRAY16_LE, v308, RGB16, BGR16, RGB15, BGR15, UYVP, A420, RGB8P, YUV9, YVU9, IYU1, ARGB64, AYUV64, r210, I420_10LE, I420_10BE, I422_10LE, I422_10BE, Y444_10LE, Y444_10BE, GBR, GBR_10LE, GBR_10BE, NV12_64Z32 }<o:p></o:p> 0:00:04.905145185 6393 0x7f190420e190 DEBUG v4l2src gstv4l2src.c:316:gst_v4l2src_negotiate:<v4l2source> peercaps: video/x-raw, format=(string)I420, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ]; video/x-raw, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ], format=(string){ I420, YV12, YUY2, UYVY, AYUV, RGBx, BGRx, xRGB, xBGR, RGBA, BGRA, ARGB, ABGR, RGB, BGR, Y41B, Y42B, YVYU, Y444, v210, v216, NV12, NV21, NV16, NV24, GRAY8, GRAY16_BE, GRAY16_LE, v308, RGB16, BGR16, RGB15, BGR15, UYVP, A420, RGB8P, YUV9, YVU9, IYU1, ARGB64, AYUV64, r210, I420_10LE, I420_10BE, I422_10LE, I422_10BE, Y444_10LE, Y444_10BE, GBR, GBR_10LE, GBR_10BE, NV12_64Z32 }<o:p></o:p> 0:00:04.905175861 6393 0x7f190420e190 DEBUG v4l2src gstv4l2src.c:326:gst_v4l2src_negotiate:<v4l2source> peer: video/x-raw, format=(string)I420, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ]<o:p></o:p> 0:00:04.905190613 6393 0x7f190420e190 DEBUG v4l2src gstv4l2src.c:327:gst_v4l2src_negotiate:<v4l2source> ipcaps: video/x-raw, format=(string)I420, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ]<o:p></o:p> 0:00:04.905219649 6393 0x7f190420e190 DEBUG v4l2src gstv4l2src.c:326:gst_v4l2src_negotiate:<v4l2source> peer: video/x-raw, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ], format=(string){ I420, YV12, YUY2, UYVY, AYUV, RGBx, BGRx, xRGB, xBGR, RGBA, BGRA, ARGB, ABGR, RGB, BGR, Y41B, Y42B, YVYU, Y444, v210, v216, NV12, NV21, NV16, NV24, GRAY8, GRAY16_BE, GRAY16_LE, v308, RGB16, BGR16, RGB15, BGR15, UYVP, A420, RGB8P, YUV9, YVU9, IYU1, ARGB64, AYUV64, r210, I420_10LE, I420_10BE, I422_10LE, I422_10BE, Y444_10LE, Y444_10BE, GBR, GBR_10LE, GBR_10BE, NV12_64Z32 }<o:p></o:p> 0:00:04.905242035 6393 0x7f190420e190 DEBUG v4l2src gstv4l2src.c:327:gst_v4l2src_negotiate:<v4l2source> ipcaps: video/x-raw, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ], format=(string){ I420, YV12, YUY2, UYVY, AYUV, RGBx, BGRx, xRGB, xBGR, RGBA, BGRA, ARGB, ABGR, RGB, BGR, Y41B, Y42B, YVYU, Y444, v210, v216, NV12, NV21, NV16, NV24, GRAY8, GRAY16_BE, GRAY16_LE, v308, RGB16, BGR16, RGB15, BGR15, UYVP, A420, RGB8P, YUV9, YVU9, IYU1, ARGB64, AYUV64, r210, I420_10LE, I420_10BE, I422_10LE, I422_10BE, Y444_10LE, Y444_10BE, GBR, GBR_10LE, GBR_10BE, NV12_64Z32 }<o:p></o:p> 0:00:04.905311464 6393 0x7f190420e190 DEBUG v4l2src gstv4l2src.c:339:gst_v4l2src_negotiate:<v4l2source> intersect: video/x-raw, format=(string)YUY2, width=(int)1600, height=(int)1200, pixel-aspect-ratio=(fraction)1/1, interlace-mode=(string)progressive, framerate=(fraction){ 5/1, 5/2 }; video/x-raw, format=(string)YUY2, width=(int)1280, height=(int)1024, pixel-aspect-ratio=(fraction)1/1, interlace-mode=(string)progressive, framerate=(fraction){ 15/2, 5/1 }; video/x-raw, format=(string)YUY2, width=(int)1280, height=(int)960, pixel-aspect-ratio=(fraction)1/1, interlace-mode=(string)progressive, framerate=(fraction){ 15/2, 5/1 }; video/x-raw, format=(string)YUY2, width=(int)800, height=(int)600, pixel-aspect-ratio=(fraction)1/1, interlace-mode=(string)progressive, framerate=(fraction){ 20/1, 15/1 }; video/x-raw, format=(string)YUY2, width=(int)640, height=(int)480, pixel-aspect-ratio=(fraction)1/1, interlace-mode=(string)progressive, framerate=(fraction){ 30/1, 15/1 }; video/x-raw, format=(string)YUY2, width=(int)352, height=(int)288, pixel-aspect-ratio=(fraction)1/1, interlace-mode=(string)progressive, framerate=(fraction){ 30/1, 15/1 }; video/x-raw, format=(string)YUY2, width=(int)320, height=(int)240, pixel-aspect-ratio=(fraction)1/1, interlace-mode=(string)progressive, framerate=(fraction){ 30/1, 15/1 }; video/x-raw, format=(string)YUY2, width=(int)176, height=(int)144, pixel-aspect-ratio=(fraction)1/1, interlace-mode=(string)progressive, framerate=(fraction){ 30/1, 15/1 }; video/x-raw, format=(string)YUY2, width=(int)160, height=(int)120, pixel-aspect-ratio=(fraction)1/1, interlace-mode=(string)progressive, framerate=(fraction){ 30/1, 15/1 }<o:p></o:p> 0:00:04.905362557 6393 0x7f190420e190 DEBUG v4l2src gstv4l2src.c:340:gst_v4l2src_negotiate:<v4l2source> icaps: video/x-raw, format=(string)YUY2, width=(int)1600, height=(int)1200, pixel-aspect-ratio=(fraction)1/1, interlace-mode=(string)progressive, framerate=(fraction){ 5/1, 5/2 }; video/x-raw, format=(string)YUY2, width=(int)1280, height=(int)1024, pixel-aspect-ratio=(fraction)1/1, interlace-mode=(string)progressive, framerate=(fraction){ 15/2, 5/1 }; video/x-raw, format=(string)YUY2, width=(int)1280, height=(int)960, pixel-aspect-ratio=(fraction)1/1, interlace-mode=(string)progressive, framerate=(fraction){ 15/2, 5/1 }; video/x-raw, format=(string)YUY2, width=(int)800, height=(int)600, pixel-aspect-ratio=(fraction)1/1, interlace-mode=(string)progressive, framerate=(fraction){ 20/1, 15/1 }; video/x-raw, format=(string)YUY2, width=(int)640, height=(int)480, pixel-aspect-ratio=(fraction)1/1, interlace-mode=(string)progressive, framerate=(fraction){ 30/1, 15/1 }; video/x-raw, format=(string)YUY2, width=(int)352, height=(int)288, pixel-aspect-ratio=(fraction)1/1, interlace-mode=(string)progressive, framerate=(fraction){ 30/1, 15/1 }; video/x-raw, format=(string)YUY2, width=(int)320, height=(int)240, pixel-aspect-ratio=(fraction)1/1, interlace-mode=(string)progressive, framerate=(fraction){ 30/1, 15/1 }; video/x-raw, format=(string)YUY2, width=(int)176, height=(int)144, pixel-aspect-ratio=(fraction)1/1, interlace-mode=(string)progressive, framerate=(fraction){ 30/1, 15/1 }; video/x-raw, format=(string)YUY2, width=(int)160, height=(int)120, pixel-aspect-ratio=(fraction)1/1, interlace-mode=(string)progressive, framerate=(fraction){ 30/1, 15/1 }<o:p></o:p> 0:00:04.905419994 6393 0x7f190420e190 DEBUG v4l2src gstv4l2src.c:256:gst_v4l2src_fixate:<v4l2source> fixating caps video/x-raw, format=(string)YUY2, width=(int)1600, height=(int)1200, pixel-aspect-ratio=(fraction)1/1, interlace-mode=(string)progressive, framerate=(fraction){ 5/1, 5/2 }<o:p></o:p> 0:00:04.905439574 6393 0x7f190420e190 DEBUG v4l2src gstv4l2src.c:279:gst_v4l2src_fixate:<v4l2source> fixated caps video/x-raw, format=(string)YUY2, width=(int)1600, height=(int)1200, pixel-aspect-ratio=(fraction)1/1, interlace-mode=(string)progressive, framerate=(fraction)5/1<o:p></o:p> 0:00:04.905453604 6393 0x7f190420e190 DEBUG v4l2src gstv4l2src.c:390:gst_v4l2src_negotiate:<v4l2source> fixated to: video/x-raw, format=(string)YUY2, width=(int)1600, height=(int)1200, pixel-aspect-ratio=(fraction)1/1, interlace-mode=(string)progressive, framerate=(fraction)5/1<o:p></o:p> 0:00:04.905466635 6393 0x7f190420e190 DEBUG v4l2src gstv4l2src.c:391:gst_v4l2src_negotiate:<v4l2source> caps: video/x-raw, format=(string)YUY2, width=(int)1600, height=(int)1200, pixel-aspect-ratio=(fraction)1/1, interlace-mode=(string)progressive, framerate=(fraction)5/1<o:p></o:p> 0:00:04.907879045 6393 0x7f190420e190 ERROR v4l2 gstv4l2bufferpool.c:551:gst_v4l2_buffer_pool_streamon:<v4l2source:pool:src> error with STREAMON 22 (Invalid argument)<o:p></o:p> 0:00:04.907934968 6393 0x7f190420e190 WARN v4l2 gstv4l2bufferpool.c:994:gst_v4l2_buffer_pool_poll:<v4l2source> error: poll error 1: Invalid argument (22)<o:p></o:p> 0:00:04.908032710 6393 0x7f190420e190 WARN v4l2src gstv4l2src.c:749:gst_v4l2src_create:<v4l2source> error: Failed to allocate a buffer<o:p></o:p> GStreamer ERROR: gstv4l2bufferpool.c(994): gst_v4l2_buffer_pool_poll (): /GstPipeline:pipeline/GstBin:pipeline_0/GstBin:source/GstV4l2Src:v4l2source:<o:p></o:p> poll error 1: Invalid argument (22)<o:p></o:p> 0:00:04.908091528 6393 0x7f190420e190 WARN basesrc gstbasesrc.c:2933:gst_base_src_loop:<v4l2source> error: Internal data flow error.<o:p></o:p> 0:00:04.908103434 6393 0x7f190420e190 WARN basesrc gstbasesrc.c:2933:gst_base_src_loop:<v4l2source> error: streaming task paused, reason error (-5)<o:p></o:p> GStreamer ERROR: gstv4l2src.c(749): gst_v4l2src_create (): /GstPipeline:pipeline/GstBin:pipeline_0/GstBin:source/GstV4l2Src:v4l2source<o:p></o:p> 0:00:04.908440954 6393 0x7f19041a2680 FIXME basesink gstbasesink.c:3059:gst_base_sink_default_event:<sink> stream-start event without group-id. Consider implementing group-id handling in the upstream elements<o:p></o:p> GStreamer ERROR: gstbasesrc.c(2933): gst_base_src_loop (): /GstPipeline:pipeline/GstBin:pipeline_0/GstBin:source/GstV4l2Src:v4l2source:<o:p></o:p> streaming task paused, reason error (-5)<o:p></o:p> 0:00:05.161195439 6393 0x7f190420e050 FIXME basesink gstbasesink.c:3059:gst_base_sink_default_event:<sink> stream-start event without group-id. Consider implementing group-id handling in the upstream elements<o:p></o:p> <o:p> </o:p> -- <o:p></o:p> Best regards, Krzysztof Borowczyk<o:p></o:p> </div> </body> </html>