<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=windows-1252"> </head> <body> videoconvert most likely isn't going to work with GPU buffers at all. You will probably want your own element that deals with your data correctly (or use an existing element like glcolorconvert or maybe a v4l2 converter element). Cheers -Matt <div class="moz-cite-prefix">On 18/8/21 4:18 pm, Gaurav Vohra via gstreamer-devel wrote: </div> <blockquote type="cite" cite="mid:PH0PR04MB7544C50116605CC20824B6CEE5FF9@PH0PR04MB7544.namprd04.prod.outlook.com"> <meta http-equiv="Content-Type" content="text/html; charset=windows-1252"> <meta name="Generator" content="Microsoft Word 15 (filtered medium)"> <style>@font-face {font-family:"Cambria Math"; panose-1:2 4 5 3 5 4 6 3 2 4;}@font-face {font-family:Calibri; panose-1:2 15 5 2 2 2 4 3 2 4;}p.MsoNormal, li.MsoNormal, div.MsoNormal {margin:0in; font-size:11.0pt; font-family:"Calibri",sans-serif;}.MsoChpDefault {mso-style-type:export-only; font-size:10.0pt;}div.WordSection1 {page:WordSection1;}</style> <div class="WordSection1"> Hello,<o:p></o:p> <o:p> </o:p> I am working to customize gstreamer plugin to support <o:p></o:p> <o:p> </o:p> working to modify gstreamer plugin - videoconvert get obtain output data allocated as gpu memory allocated buffers.<o:p></o:p> As part of first step have modified the plugin to update the src template to include the gpu memory caps.<o:p></o:p> Allocation for gpu memory is done is transform_frame, but before that being called stream error and negotition is failing<o:p></o:p> Commented part<o:p></o:p> // #define CSP_VIDEO_CAPS GST_VIDEO_CAPS_MAKE (GST_VIDEO_FORMATS_ALL) ";" \<o:p></o:p> GST_VIDEO_CAPS_MAKE_WITH_FEATURES ("ANY", GST_VIDEO_FORMATS_ALL)<o:p></o:p> Modified part<o:p></o:p> #define CSP_VIDEO_CAPS_SRC GST_VIDEO_CAPS_MAKE (GST_VIDEO_FORMATS_ALL) ";" \<o:p></o:p> GST_VIDEO_CAPS_MAKE_WITH_FEATURES ("memory:GBM", GST_VIDEO_FORMATS_ALL)<o:p></o:p> <o:p> </o:p> //#define CSP_VIDEO_CAPS_SRC GST_VIDEO_CAPS_MAKE_WITH_FEATURES ("memory:GBM", GST_VIDEO_FORMATS_ALL)<o:p></o:p> static GstStaticPadTemplate gst_video_convert_src_template =<o:p></o:p> GST_STATIC_PAD_TEMPLATE ("src",<o:p></o:p> GST_PAD_SRC,<o:p></o:p> GST_PAD_ALWAYS,<o:p></o:p> GST_STATIC_CAPS (CSP_VIDEO_CAPS_SRC)<o:p></o:p> );<o:p></o:p> While trying to run the playback pipeline getting errors related to negotitation and stream error like below<o:p></o:p> ERROR: from element /GstPipeline:pipeline0/GstV4l2Src:v4l2src0: Internal data stream error.<o:p></o:p> Additional debug info:<o:p></o:p> ../../../../gstreamer-1.14.4/libs/gst/base/gstbasesrc.c(3055): gst_base_src_loop (): /GstPipeline:pipeline0/GstV4l2Src:v4l2src0:<o:p></o:p> streaming stopped, reason not-negotiated (-4)<o:p></o:p> <o:p> </o:p> Further debugging from logs suggest intersect of capsfilter input and the caps filter is coming as EMPTY <o:p></o:p> <o:p> </o:p> 0:00:06.974521920 4320 0x10cde60 DEBUG capsfilter gstcapsfilter.c:296:gst_capsfilter_transform_caps:<capsfilter0> input: video/x-raw(memory:GBM), format=(string)NV12, width=(int)[ 1, 32767 ], height=(int)[ 1, 32767 ], framerate=(fraction)[ 0/1, 2147483647/1 ]; video/x-raw(memory:GBM), width=(int)[ 1, 32767 ], height=(int)[ 1, 32767 ], 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, GRAY8, GRAY16_BE, GRAY16_LE, v308, RGB16, BGR16, RGB15, BGR15, UYVP, A420, RGB8P, YUV9, YVU9, IYU1, ARGB64, AYUV64, r210, I420_10BE, I420_10LE, I422_10BE, I422_10LE, Y444_10BE, Y444_10LE, GBR, GBR_10BE, GBR_10LE, NV16, NV24, NV12_64Z32, A420_10BE, A420_10LE, A422_10BE, A422_10LE, A444_10BE, A444_10LE, NV61, P010_10BE, P010_10LE, IYU2, VYUY, GBRA, GBRA_10BE, GBRA_10LE, GBR_12BE, GBR_12LE, GBRA_12BE, GBRA_12LE, I420_12BE, I420_12LE, I422_12BE, I422_12LE, Y444_12BE, Y444_12LE, GRAY10_LE32, NV12_10LE32, NV16_10LE32 }<o:p></o:p> 0:00:06.974569108 4320 0x10cde60 DEBUG capsfilter gstcapsfilter.c:297:gst_capsfilter_transform_caps:<capsfilter0> filter: (NULL)<o:p></o:p> 0:00:06.974616661 4320 0x10cde60 DEBUG capsfilter gstcapsfilter.c:299:gst_capsfilter_transform_caps:<capsfilter0> caps filter: video/x-raw, width=(int)1280, height=(int)720, framerate=(fraction)15/2, format=(string)YUY2<o:p></o:p> 0:00:06.974651037 4320 0x10cde60 DEBUG capsfilter gstcapsfilter.c:300:gst_capsfilter_transform_caps:<capsfilter0> intersect: EMPTY<o:p></o:p> <o:p> </o:p> Regards<o:p></o:p> Gaurav<o:p></o:p> </div> </blockquote> </body> </html>