Graphics, sound and multimedia • [Bug] Regression: Gstreamer v4l2h264enc hangs on complex input.

Code:

gst-launch-1.0 videotestsrc pattern=1 ! video/x-raw,format=RGB,width=640,height=480 ! v4l2h264enc extra-controls="s,video_bitrate=1000000," ! video/x-h264,level="(string)4.1" ! fakesink 

Code:

pi@streamer:~ $ gst-launch-1.0 --versiongst-launch-1.0 version 1.22.0GStreamer 1.22.0

Code:

pi@streamer:~ $ apt list gstreamer* --installedListing... Donegstreamer1.0-gl/stable,now 1.22.0-3+rpt1+deb12u4 arm64 [installed]gstreamer1.0-libav/stable,now 1.22.0-2 arm64 [installed]gstreamer1.0-libcamera/stable,now 0.5.0+rpt20250429-1 arm64 [installed]gstreamer1.0-plugins-bad-apps/stable-security,now 1.22.0-4+deb12u6 arm64 [installed]gstreamer1.0-plugins-bad/stable-security,now 1.22.0-4+deb12u6 arm64 [installed]gstreamer1.0-plugins-base-apps/stable,now 1.22.0-3+rpt1+deb12u4 arm64 [installed]gstreamer1.0-plugins-base/stable,now 1.22.0-3+rpt1+deb12u4 arm64 [installed]gstreamer1.0-plugins-good/stable,now 1.22.0-5+rpt2+deb12u2 arm64 [installed,automatic]gstreamer1.0-plugins-rtp/stable,now 1.14.4.1 arm64 [installed]gstreamer1.0-plugins-ugly/stable,stable-security,now 1.22.0-2+deb12u1 arm64 [installed]gstreamer1.0-rtsp/stable,now 1.22.0-2 arm64 [installed]gstreamer1.0-tools/stable,stable-security,now 1.22.0-2+deb12u1 arm64 [installed]gstreamer1.0-x/stable,now 1.22.0-3+rpt1+deb12u4 arm64 [installed,automatic]

Code:

pi@streamer:~ $ raspinfo System Information------------------Raspberry Pi 4 Model B Rev 1.5PRETTY_NAME="Debian GNU/Linux 12 (bookworm)"NAME="Debian GNU/Linux"VERSION_ID="12"VERSION="12 (bookworm)"Raspberry Pi reference 2025-05-13Generated using pi-gen, https://github.com/RPi-Distro/pi-gen, 5dabc7dc940059dfbc46af5d97b60a1e812523dd, stage2Linux streamer 6.12.34+rpt-rpi-v8 #1 SMP PREEMPT Debian 1:6.12.34-1+rpt1~bookworm (2025-06-26) aarch64 GNU/LinuxRevision        : c03115Serial          : 10000000fe2d3898Model           : Raspberry Pi 4 Model B Rev 1.5Throttled flag  : throttled=0x0Camera          : supported=0 detected=0, libcamera interfaces=0Videocore information---------------------Apr 30 2025 13:33:39 Copyright (c) 2012 Broadcomversion 5560078dcc8591a00f57b9068d13e5544aeef3aa (clean) (release) (start)alloc failures:     0compactions:        0legacy block fails: 0Package version information---------------------------raspberrypi-ui-mods:  Installed: (none)raspberrypi-sys-mods:  Installed: 20250605~bookwormopenbox:  Installed: (none)lxpanel:  Installed: (none)pcmanfm:  Installed: (none)rpd-plym-splash:  Installed: (none)...config.txt----------arm_64bit=1arm_boost=1arm_freq=1800audio_pwm_mode=514auto_initramfs=1config_hdmi_boost=5core_freq=500core_freq_min=200disable_commandline_tags=2disable_fw_kms_setup=1disable_l2cache=1disable_overscan=1display_auto_detect=1display_hdmi_rotate=-1display_lcd_rotate=-1dvfs=3enable_gic=1force_eeprom_read=1force_pwm_open=1framebuffer_ignore_alpha=1framebuffer_swap=1gpu_freq=500gpu_freq_min=250init_uart_clock=0x2dc6c00initial_turbo=60lcd_framerate=60mask_gpu_interrupt0=3072mask_gpu_interrupt1=25699max_framebuffers=2over_voltage_avs=-30000pause_burst_frames=1pciex4_reset=1pmic_turbo_threshold=600program_serial_random=1total_mem=4096hdmi_force_cec_address:0=65535hdmi_force_cec_address:1=65535hdmi_pixel_freq_limit:0=0x11e1a300hdmi_pixel_freq_limit:1=0x11e1a300device_tree=-overlay_prefix=overlays/hdmi_cvt:0=hdmi_cvt:1=hdmi_edid_filename:0=hdmi_edid_filename:1=hdmi_timings:0=hdmi_timings:1=cmdline.txt-----------coherent_pool=1M 8250.nr_uarts=0 snd_bcm2835.enable_headphones=0 cgroup_disable=memory numa_policy=interleave nvme.max_host_mem_size_mb=0 snd_bcm2835.enable_hdmi=0  numa=fake=2 system_heap.max_order=0 smsc95xx.macaddr=D8:3A:DD:FD:E4:66 vc_mem.mem_base=0x3ec00000 vc_mem.mem_size=0x40000000  console=ttyS0,115200 console=tty1 root=PARTUUID=dc64cb2e-02 rootfstype=ext4 fsck.repair=yes rootwait cfg80211.ieee80211_regdom=US...EEPROM------BOOTLOADER: up to date   CURRENT: Thu  8 May 15:21:35 UTC 2025 (1746717695)    LATEST: Thu  8 May 15:21:35 UTC 2025 (1746717695)   RELEASE: default (/usr/lib/firmware/raspberrypi/bootloader-2711/default)            Use raspi-config to change the release.  VL805_FW: Using bootloader EEPROM     VL805: up to date   CURRENT: 000138c0    LATEST: 000138c0

Code:

0:00:10.747077545  1300   0x558fa68e00 DEBUG           videoencoder gstvideoencoder.c:1482:gst_video_encoder_src_query:<v4l2h264enc0> received query 5123, duration0:00:10.747199803  1300   0x558fa68e00 LOG             videoencoder gstvideoencoder.c:1418:gst_video_encoder_src_query_default:<v4l2h264enc0> handling query: duration query: 0x558fd265e0, GstQueryDuration, format=(GstFormat)time, duration=(gint64)-1;0:00:10.747292043  1300   0x558fa68e00 DEBUG               GST_PADS gstpad.c:3519:gst_pad_query_default:<v4l2h264enc0:src> forwarding 0x558fd265e0 (duration) query0:00:10.747325969  1300   0x558fa68e00 DEBUG               GST_PADS gstpad.c:2973:gst_pad_iterate_internal_links_default:<v4l2h264enc0:src> Making iterator0:00:10.747365172  1300   0x558fa68e00 LOG                 GST_PADS gstpad.c:3082:gst_pad_forward:<v4l2h264enc0:src> calling forward function on pad v4l2h264enc0:sink0:00:10.747406838  1300   0x558fa68e00 LOG                 GST_PADS gstpad.c:3455:query_forward_func:<v4l2h264enc0:sink> query peer 0x558fd265e0 (duration) of v4l2h264enc0:sink0:00:10.747442560  1300   0x558fa68e00 DEBUG               GST_PADS gstpad.c:4310:gst_pad_peer_query:<v4l2h264enc0:sink> peer query 0x558fd265e0 (duration)0:00:10.747475449  1300   0x558fa68e00 DEBUG               GST_PADS gstpad.c:4183:gst_pad_query:<capsfilter0:src> doing query 0x558fd265e0 (duration)0:00:10.747509652  1300   0x558fa68e00 DEBUG               GST_PADS gstpad.c:4310:gst_pad_peer_query:<capsfilter0:sink> peer query 0x558fd265e0 (duration)0:00:10.747542559  1300   0x558fa68e00 DEBUG               GST_PADS gstpad.c:4183:gst_pad_query:<videotestsrc0:src> doing query 0x558fd265e0 (duration)0:00:10.747579448  1300   0x558fa68e00 DEBUG                basesrc gstbasesrc.c:1141:gst_base_src_default_query:<videotestsrc0> duration query in format time0:00:10.747614003  1300   0x558fa68e00 LOG                  basesrc gstbasesrc.c:1166:gst_base_src_default_query:<videotestsrc0> duration -1, format time0:00:10.747651651  1300   0x558fa68e00 DEBUG                basesrc gstbasesrc.c:1386:gst_base_src_default_query:<videotestsrc0> query duration returns 10:00:10.747685873  1300   0x558fa68e00 DEBUG               GST_PADS gstpad.c:4206:gst_pad_query:<videotestsrc0:src> sent query 0x558fd265e0 (duration), result 10:00:10.747721354  1300   0x558fa68e00 DEBUG               GST_PADS gstpad.c:4206:gst_pad_query:<capsfilter0:src> sent query 0x558fd265e0 (duration), result 10:00:10.747759502  1300   0x558fa68e00 DEBUG               GST_PADS gstpad.c:4206:gst_pad_query:<v4l2h264enc0:src> sent query 0x558fd265e0 (duration), result 10:00:10.747795205  1300   0x558fa68e00 DEBUG               GST_PADS gstpad.c:4206:gst_pad_query:<capsfilter1:src> sent query 0x558fd265e0 (duration), result 10:00:10.747826853  1300   0x558fa68e00 DEBUG               basesink gstbasesink.c:5538:default_element_query:<fakesink0> query duration returns 10:00:10.747857612  1300   0x558fa68e00 DEBUG                    bin gstbin.c:4074:bin_query_duration_fold:<fakesink0> got duration -10:00:10.747893260  1300   0x558fa68e00 DEBUG                    bin gstbin.c:4098:bin_query_duration_done:<pipeline0> max duration -10:00:10.747928500  1300   0x558fa68e00 DEBUG                    bin gstbin.c:4318:gst_bin_query:<pipeline0> query 0x558fd265e0 result 10:00:10.845226672  1300   0x558fa68e00 DEBUG                  query gstquery.c:679:gst_query_new_custom: creating new query 0x558fac9f20 position0:00:10.845327467  1300   0x558fa68e00 DEBUG       GST_ELEMENT_PADS gstelement.c:2098:gst_element_query: send query on element pipeline00:00:10.845407670  1300   0x558fa68e00 DEBUG                    bin gstbin.c:4295:gst_bin_query:<pipeline0> Sending query 0x558fac9f20 (type position) to sink children0:00:10.845485095  1300   0x558fa68e00 DEBUG             GST_STATES gstbin.c:1956:bin_element_is_sink:<pipeline0> child capsfilter1 is not sink0:00:10.845558131  1300   0x558fa68e00 DEBUG             GST_STATES gstbin.c:1956:bin_element_is_sink:<pipeline0> child capsfilter0 is not sink0:00:10.845660223  1300   0x558fa68e00 DEBUG             GST_STATES gstbin.c:1956:bin_element_is_sink:<pipeline0> child fakesink0 is sink0:00:10.845733667  1300   0x558fa68e00 DEBUG       GST_ELEMENT_PADS gstelement.c:2098:gst_element_query: send query on element fakesink00:00:10.845806185  1300   0x558fa68e00 DEBUG               basesink gstbasesink.c:5419:default_element_query:<fakesink0> position query in format time0:00:10.845872480  1300   0x558fa68e00 DEBUG               basesink gstbasesink.c:5215:gst_base_sink_get_position:<fakesink0> no sync or no clock0:00:10.845947739  1300   0x558fa68e00 DEBUG               basesink gstbasesink.c:5237:gst_base_sink_get_position:<fakesink0> in PAUSED using last 0:00:00.0000000000:00:10.846019016  1300   0x558fa68e00 DEBUG               basesink gstbasesink.c:5271:gst_base_sink_get_position:<fakesink0> using last seen timestamp 0:00:00.0000000000:00:10.846092015  1300   0x558fa68e00 DEBUG               basesink gstbasesink.c:5341:gst_base_sink_get_position:<fakesink0> res: 1, POSITION: 0:00:00.0000000000:00:10.846165015  1300   0x558fa68e00 DEBUG               basesink gstbasesink.c:5538:default_element_query:<fakesink0> query position returns 10:00:10.846230551  1300   0x558fa68e00 DEBUG                    bin gstbin.c:4118:bin_query_position_fold:<fakesink0> got position 00:00:10.846302439  1300   0x558fa68e00 DEBUG             GST_STATES gstbin.c:1956:bin_element_is_sink:<pipeline0> child v4l2h264enc0 is not sink0:00:10.846373272  1300   0x558fa68e00 DEBUG             GST_STATES gstbin.c:1956:bin_element_is_sink:<pipeline0> child videotestsrc0 is not sink0:00:10.846443605  1300   0x558fa68e00 DEBUG                    bin gstbin.c:4136:bin_query_position_done:<pipeline0> max position 00:00:10.846511808  1300   0x558fa68e00 DEBUG                    bin gstbin.c:4318:gst_bin_query:<pipeline0> query 0x558fac9f20 result 10:00:10.846588548  1300   0x558fa68e00 DEBUG                  query gstquery.c:679:gst_query_new_custom: creating new query 0x558fac9e80 duration0:00:10.846652251  1300   0x558fa68e00 DEBUG       GST_ELEMENT_PADS gstelement.c:2098:gst_element_query: send query on element pipeline00:00:10.846725398  1300   0x558fa68e00 DEBUG                    bin gstbin.c:4295:gst_bin_query:<pipeline0> Sending query 0x558fac9e80 (type duration) to sink children0:00:10.846797083  1300   0x558fa68e00 DEBUG             GST_STATES gstbin.c:1956:bin_element_is_sink:<pipeline0> child capsfilter1 is not sink0:00:10.846866656  1300   0x558fa68e00 DEBUG             GST_STATES gstbin.c:1956:bin_element_is_sink:<pipeline0> child capsfilter0 is not sink0:00:10.846935174  1300   0x558fa68e00 DEBUG             GST_STATES gstbin.c:1956:bin_element_is_sink:<pipeline0> child fakesink0 is sink0:00:10.847003285  1300   0x558fa68e00 DEBUG       GST_ELEMENT_PADS gstelement.c:2098:gst_element_query: send query on element fakesink00:00:10.847069414  1300   0x558fa68e00 DEBUG               basesink gstbasesink.c:5470:default_element_query:<fakesink0> duration query in format time0:00:10.847139117  1300   0x558fa68e00 DEBUG               GST_PADS gstpad.c:4310:gst_pad_peer_query:<fakesink0:sink> peer query 0x558fac9e80 (duration)0:00:10.847211116  1300   0x558fa68e00 DEBUG               GST_PADS gstpad.c:4183:gst_pad_query:<capsfilter1:src> doing query 0x558fac9e80 (duration)0:00:10.847280560  1300   0x558fa68e00 DEBUG               GST_PADS gstpad.c:4310:gst_pad_peer_query:<capsfilter1:sink> peer query 0x558fac9e80 (duration)0:00:10.847347819  1300   0x558fa68e00 DEBUG               GST_PADS gstpad.c:4183:gst_pad_query:<v4l2h264enc0:src> doing query 0x558fac9e80 (duration)0:00:10.847417262  1300   0x558fa68e00 DEBUG           videoencoder gstvideoencoder.c:1482:gst_video_encoder_src_query:<v4l2h264enc0> received query 5123, duration0:00:10.847527002  1300   0x558fa68e00 LOG             videoencoder gstvideoencoder.c:1418:gst_video_encoder_src_query_default:<v4l2h264enc0> handling query: duration query: 0x558fac9e80, GstQueryDuration, format=(GstFormat)time, duration=(gint64)-1;0:00:10.847607149  1300   0x558fa68e00 DEBUG               GST_PADS gstpad.c:3519:gst_pad_query_default:<v4l2h264enc0:src> forwarding 0x558fac9e80 (duration) query0:00:10.847672019  1300   0x558fa68e00 DEBUG               GST_PADS gstpad.c:2973:gst_pad_iterate_internal_links_default:<v4l2h264enc0:src> Making iterator0:00:10.847743833  1300   0x558fa68e00 LOG                 GST_PADS gstpad.c:3082:gst_pad_forward:<v4l2h264enc0:src> calling forward function on pad v4l2h264enc0:sink0:00:10.847809685  1300   0x558fa68e00 LOG                 GST_PADS gstpad.c:3455:query_forward_func:<v4l2h264enc0:sink> query peer 0x558fac9e80 (duration) of v4l2h264enc0:sink0:00:10.847841832  1300   0x558fa68e00 DEBUG               GST_PADS gstpad.c:4310:gst_pad_peer_query:<v4l2h264enc0:sink> peer query 0x558fac9e80 (duration)0:00:10.847871054  1300   0x558fa68e00 DEBUG               GST_PADS gstpad.c:4183:gst_pad_query:<capsfilter0:src> doing query 0x558fac9e80 (duration)0:00:10.847900295  1300   0x558fa68e00 DEBUG               GST_PADS gstpad.c:4310:gst_pad_peer_query:<capsfilter0:sink> peer query 0x558fac9e80 (duration)0:00:10.847928961  1300   0x558fa68e00 DEBUG               GST_PADS gstpad.c:4183:gst_pad_query:<videotestsrc0:src> doing query 0x558fac9e80 (duration)0:00:10.847962794  1300   0x558fa68e00 DEBUG                basesrc gstbasesrc.c:1141:gst_base_src_default_query:<videotestsrc0> duration query in format time0:00:10.847993590  1300   0x558fa68e00 LOG                  basesrc gstbasesrc.c:1166:gst_base_src_default_query:<videotestsrc0> duration -1, format time0:00:10.848025720  1300   0x558fa68e00 DEBUG                basesrc gstbasesrc.c:1386:gst_base_src_default_query:<videotestsrc0> query duration returns 10:00:10.848055368  1300   0x558fa68e00 DEBUG               GST_PADS gstpad.c:4206:gst_pad_query:<videotestsrc0:src> sent query 0x558fac9e80 (duration), result 10:00:10.848085867  1300   0x558fa68e00 DEBUG               GST_PADS gstpad.c:4206:gst_pad_query:<capsfilter0:src> sent query 0x558fac9e80 (duration), result 10:00:10.848118497  1300   0x558fa68e00 DEBUG               GST_PADS gstpad.c:4206:gst_pad_query:<v4l2h264enc0:src> sent query 0x558fac9e80 (duration), result 10:00:10.848148274  1300   0x558fa68e00 DEBUG               GST_PADS gstpad.c:4206:gst_pad_query:<capsfilter1:src> sent query 0x558fac9e80 (duration), result 10:00:10.848175978  1300   0x558fa68e00 DEBUG               basesink gstbasesink.c:5538:default_element_query:<fakesink0> query duration returns 10:00:10.848203181  1300   0x558fa68e00 DEBUG                    bin gstbin.c:4074:bin_query_duration_fold:<fakesink0> got duration -10:00:10.848232940  1300   0x558fa68e00 DEBUG                    bin gstbin.c:4098:bin_query_duration_done:<pipeline0> max duration -10:00:10.848262421  1300   0x558fa68e00 DEBUG                    bin gstbin.c:4318:gst_bin_query:<pipeline0> query 0x558fac9e80 result 10:00:10.945527371  1300   0x558fa68e00 DEBUG                  query gstquery.c:679:gst_query_new_custom: creating new query 0x558fac7370 position0:00:10.945663684  1300   0x558fa68e00 DEBUG       GST_ELEMENT_PADS gstelement.c:2098:gst_element_query: send query on element pipeline00:00:10.945764072  1300   0x558fa68e00 DEBUG                    bin gstbin.c:4295:gst_bin_query:<pipeline0> Sending query 0x558fac7370 (type position) to sink children0:00:10.945853127  1300   0x558fa68e00 DEBUG             GST_STATES gstbin.c:1956:bin_element_is_sink:<pipeline0> child capsfilter1 is not sink0:00:10.945938015  1300   0x558fa68e00 DEBUG             GST_STATES gstbin.c:1956:bin_element_is_sink:<pipeline0> child capsfilter0 is not sink0:00:10.946020533  1300   0x558fa68e00 DEBUG             GST_STATES gstbin.c:1956:bin_element_is_sink:<pipeline0> child fakesink0 is sink0:00:10.946102699  1300   0x558fa68e00 DEBUG       GST_ELEMENT_PADS gstelement.c:2098:gst_element_query: send query on element fakesink00:00:10.946183772  1300   0x558fa68e00 DEBUG               basesink gstbasesink.c:5419:default_element_query:<fakesink0> position query in format time0:00:10.946259512  1300   0x558fa68e00 DEBUG               basesink gstbasesink.c:5215:gst_base_sink_get_position:<fakesink0> no sync or no clock0:00:10.946346993  1300   0x558fa68e00 DEBUG               basesink gstbasesink.c:5237:gst_base_sink_get_position:<fakesink0> in PAUSED using last 0:00:00.0000000000:00:10.946430770  1300   0x558fa68e00 DEBUG               basesink gstbasesink.c:5271:gst_base_sink_get_position:<fakesink0> using last seen timestamp 0:00:00.0000000000:00:10.946516213  1300   0x558fa68e00 DEBUG               basesink gstbasesink.c:5341:gst_base_sink_get_position:<fakesink0> res: 1, POSITION: 0:00:00.0000000000:00:10.946600972  1300   0x558fa68e00 DEBUG               basesink gstbasesink.c:5538:default_element_query:<fakesink0> query position returns 10:00:10.946677119  1300   0x558fa68e00 DEBUG                    bin gstbin.c:4118:bin_query_position_fold:<fakesink0> got position 00:00:10.946760526  1300   0x558fa68e00 DEBUG             GST_STATES gstbin.c:1956:bin_element_is_sink:<pipeline0> child v4l2h264enc0 is not sink0:00:10.946843321  1300   0x558fa68e00 DEBUG             GST_STATES gstbin.c:1956:bin_element_is_sink:<pipeline0> child videotestsrc0 is not sink0:00:10.946926561  1300   0x558fa68e00 DEBUG                    bin gstbin.c:4136:bin_query_position_done:<pipeline0> max position 00:00:10.947007894  1300   0x558fa68e00 DEBUG                    bin gstbin.c:4318:gst_bin_query:<pipeline0> query 0x558fac7370 result 10:00:10.947098689  1300   0x558fa68e00 DEBUG                  query gstquery.c:679:gst_query_new_custom: creating new query 0x558fac7370 duration0:00:10.947173207  1300   0x558fa68e00 DEBUG       GST_ELEMENT_PADS gstelement.c:2098:gst_element_query: send query on element pipeline00:00:10.947259503  1300   0x558fa68e00 DEBUG                    bin gstbin.c:4295:gst_bin_query:<pipeline0> Sending query 0x558fac7370 (type duration) to sink children0:00:10.947341669  1300   0x558fa68e00 DEBUG             GST_STATES gstbin.c:1956:bin_element_is_sink:<pipeline0> child capsfilter1 is not sink0:00:10.947423816  1300   0x558fa68e00 DEBUG             GST_STATES gstbin.c:1956:bin_element_is_sink:<pipeline0> child capsfilter0 is not sink0:00:10.947503556  1300   0x558fa68e00 DEBUG             GST_STATES gstbin.c:1956:bin_element_is_sink:<pipeline0> child fakesink0 is sink0:00:10.947583148  1300   0x558fa68e00 DEBUG       GST_ELEMENT_PADS gstelement.c:2098:gst_element_query: send query on element fakesink00:00:10.947661147  1300   0x558fa68e00 DEBUG               basesink gstbasesink.c:5470:default_element_query:<fakesink0> duration query in format time0:00:10.947743517  1300   0x558fa68e00 DEBUG               GST_PADS gstpad.c:4310:gst_pad_peer_query:<fakesink0:sink> peer query 0x558fac7370 (duration)0:00:10.947811886  1300   0x558fa68e00 DEBUG               GST_PADS gstpad.c:4183:gst_pad_query:<capsfilter1:src> doing query 0x558fac7370 (duration)0:00:10.947849349  1300   0x558fa68e00 DEBUG               GST_PADS gstpad.c:4310:gst_pad_peer_query:<capsfilter1:sink> peer query 0x558fac7370 (duration)0:00:10.947883145  1300   0x558fa68e00 DEBUG               GST_PADS gstpad.c:4183:gst_pad_query:<v4l2h264enc0:src> doing query 0x558fac7370 (duration)0:00:10.947918163  1300   0x558fa68e00 DEBUG           videoencoder gstvideoencoder.c:1482:gst_video_encoder_src_query:<v4l2h264enc0> received query 5123, duration0:00:10.947996496  1300   0x558fa68e00 LOG             videoencoder gstvideoencoder.c:1418:gst_video_encoder_src_query_default:<v4l2h264enc0> handling query: duration query: 0x558fac7370, GstQueryDuration, format=(GstFormat)time, duration=(gint64)-1;0:00:10.948043569  1300   0x558fa68e00 DEBUG               GST_PADS gstpad.c:3519:gst_pad_query_default:<v4l2h264enc0:src> forwarding 0x558fac7370 (duration) query0:00:10.948074458  1300   0x558fa68e00 DEBUG               GST_PADS gstpad.c:2973:gst_pad_iterate_internal_links_default:<v4l2h264enc0:src> Making iterator0:00:10.948111698  1300   0x558fa68e00 LOG                 GST_PADS gstpad.c:3082:gst_pad_forward:<v4l2h264enc0:src> calling forward function on pad v4l2h264enc0:sink0:00:10.948153124  1300   0x558fa68e00 LOG                 GST_PADS gstpad.c:3455:query_forward_func:<v4l2h264enc0:sink> query peer 0x558fac7370 (duration) of v4l2h264enc0:sink0:00:10.948186883  1300   0x558fa68e00 DEBUG               GST_PADS gstpad.c:4310:gst_pad_peer_query:<v4l2h264enc0:sink> peer query 0x558fac7370 (duration)0:00:10.948219623  1300   0x558fa68e00 DEBUG               GST_PADS gstpad.c:4183:gst_pad_query:<capsfilter0:src> doing query 0x558fac7370 (duration)0:00:10.948254771  1300   0x558fa68e00 DEBUG               GST_PADS gstpad.c:4310:gst_pad_peer_query:<capsfilter0:sink> peer query 0x558fac7370 (duration)0:00:10.948287345  1300   0x558fa68e00 DEBUG               GST_PADS gstpad.c:4183:gst_pad_query:<videotestsrc0:src> doing query 0x558fac7370 (duration)0:00:10.948324178  1300   0x558fa68e00 DEBUG                basesrc gstbasesrc.c:1141:gst_base_src_default_query:<videotestsrc0> duration query in format time0:00:10.948359955  1300   0x558fa68e00 LOG                  basesrc gstbasesrc.c:1166:gst_base_src_default_query:<videotestsrc0> duration -1, format time0:00:10.948396492  1300   0x558fa68e00 DEBUG                basesrc gstbasesrc.c:1386:gst_base_src_default_query:<videotestsrc0> query duration returns 10:00:10.948430788  1300   0x558fa68e00 DEBUG               GST_PADS gstpad.c:4206:gst_pad_query:<videotestsrc0:src> sent query 0x558fac7370 (duration), result 10:00:10.948466325  1300   0x558fa68e00 DEBUG               GST_PADS gstpad.c:4206:gst_pad_query:<capsfilter0:src> sent query 0x558fac7370 (duration), result 10:00:10.948503676  1300   0x558fa68e00 DEBUG               GST_PADS gstpad.c:4206:gst_pad_query:<v4l2h264enc0:src> sent query 0x558fac7370 (duration), result 10:00:10.948538157  1300   0x558fa68e00 DEBUG               GST_PADS gstpad.c:4206:gst_pad_query:<capsfilter1:src> sent query 0x558fac7370 (duration), result 10:00:10.948570602  1300   0x558fa68e00 DEBUG               basesink gstbasesink.c:5538:default_element_query:<fakesink0> query duration returns 10:00:10.948601027  1300   0x558fa68e00 DEBUG                    bin gstbin.c:4074:bin_query_duration_fold:<fakesink0> got duration -10:00:10.948636120  1300   0x558fa68e00 DEBUG                    bin gstbin.c:4098:bin_query_duration_done:<pipeline0> max duration -10:00:10.948670767  1300   0x558fa68e00 DEBUG                    bin gstbin.c:4318:gst_bin_query:<pipeline0> query 0x558fac7370 result 10:00:00.0 / 99:99:99.