Le mercredi 25 novembre 2020 à 17:47 -0300, Fabio Estevam a écrit : > Hi, > > I am running 5.10.0-rc5-next-20201125 (same behavior is seen on > 5.4.76) on a imx6dl board with an ADV7280: > > # media-ctl -l "'adv7180 0-0020':0 -> 'ipu1_csi1_mux':4[1]"; > # media-ctl -l "'ipu1_csi1_mux':5 -> 'ipu1_csi1':0[1]" > # media-ctl -l "'ipu1_csi1':2 -> 'ipu1_csi1 capture':0[1]" > # media-ctl -V "'adv7180 0-0020':0 [fmt:UYVY2X8/720x480 field:seq-bt]" > # media-ctl -V "'ipu1_csi1_mux':5 [fmt:UYVY2X8/720x480]" > # media-ctl -V "'ipu1_csi1':2 [fmt:AYUV32/720x480]" > # v4l2-ctl -d3 --set-fmt-video=field=interlaced_bt > > Then I start the stream: > v4l2-ctl --stream-mmap -d /dev/video3 > [ 22.792049] ipu1_csi1: EOF timeout > VIDIOC_DQBUF: failed: Input/output error > > It always fails for the first time. > > Then I try to start the stream once again: > > # v4l2-ctl --stream-mmap -d /dev/video3 > [ 28.430420] ipu1_csi1: NFB4EOF > <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< 30.75 fps > <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< 30.77 fps > <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< 30.78 fps > <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< 30.77 fps > <<<<<<<<<<<<<<<<<<<<<<<<<<<<<< 30.78 fps > <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< 30.77 fps > .... > > Does anyone have an idea as to why it fails when trying to stream for > the first time? > > Next, I would like to run the following Gstreamer pipeline (GStreamer 1.18.1): > > # gst-launch-1.0 v4l2src device=/dev/video3 ! kmssink I support kmssink ask for progressive frames, while v4l2src can only produce interlaced. There is likely something to improve there, but meanwhile, consider usign deinterlace element. > Setting pipeline to PAUSED ... > Pipeline is live and does not need PREROLL ... > Pipeline is PREROLLED ... > Setting pipeline to PLAYING ... > New clock: GstSystemClock > ERROR: from element /GstPipeline:pipeline0/GstV4l2Src:v4l2src0: Device > '/dev/video3' does not support progressive interlacing > Additional debug info: > ../sys/v4l2/gstv4l2object.c(4012): gst_v4l2_object_set_format_full (): > /GstPipeline:pipeline0/GstV4l2Src:v4l2src0: > Device wants interleaved interlacing > Execution ended after 0:00:00.014920000 > Setting pipeline to NULL ... > ERROR: from element /GstPipeline:pipeline0/GstV4l2Src:v4l2src0: > Internal data stream error. > Additional debug info: > ../libs/gst/base/gstbasesrc.c(3127): gst_base_src_loop (): > /GstPipeline:pipeline0/GstV4l2Src:v4l2src0: > streaming stopped, reason not-negotiated (-4) > Freeing pipeline ... > > Any ideas on how to display the video captured to the display? > > Thanks, > > Fabio Estevam
