Gstreamer 1.0 no such or plugin 'videotestsrc' on buildroot 问题

Question

我尝试在 buildroot 上使用 gstreamer-1.0 播放视频。我在 buildroot 上打开了 gstreamer 的元素。但是当我使用 gst-inspect 命令时，我找不到在 buildroot 上激活的元素。例如我激活了videotestsrc。当我想使用这个元素时，我会出现 no such element or plugin 'videotestsrc' 错误。

我也试过导出库。我使用了这个命令：

export LD_LIBRARY_PATH=/usr/bin/gstreamer-1.0
export GST_PLUGIN_PATH=/usr/bin/gstreamer-1.0
export GST_PLUGIN_1_0

但结果没有改变。我怎样才能解决这个问题？我如何在 buildoot 上运行 gstreamer-1.0？

注：Buildroot 2019.05-rc1，内核5.0.14，u-boot 2017-05，微处理器Allwinner A13

更新(16.05.2019)
defconfig:

BR2_arm=y
BR2_cortex_a8=y
BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_4_11=y
BR2_TOOLCHAIN_BUILDROOT_WCHAR=y
BR2_TOOLCHAIN_BUILDROOT_CXX=y
BR2_TARGET_GENERIC_HOSTNAME="GenOS"
BR2_TARGET_GENERIC_ISSUE="Welcome to Mega7"
BR2_TARGET_GENERIC_GETTY_PORT="ttyS0"
BR2_ROOTFS_POST_BUILD_SCRIPT="board/olimex/a13_olinuxino/post-build.sh"
BR2_ROOTFS_POST_IMAGE_SCRIPT="support/scripts/genimage.sh"
BR2_ROOTFS_POST_SCRIPT_ARGS="-c board/olimex/a13_olinuxino/genimage.cfg"
BR2_LINUX_KERNEL=y
BR2_LINUX_KERNEL_CUSTOM_VERSION=y
BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="4.11.5"
BR2_LINUX_KERNEL_DEFCONFIG="sunxi"
BR2_LINUX_KERNEL_DTS_SUPPORT=y
BR2_LINUX_KERNEL_INTREE_DTS_NAME="sun5i-a13-olinuxino"
BR2_LINUX_KERNEL_INSTALL_TARGET=y
BR2_PACKAGE_ALSA_UTILS=y
BR2_PACKAGE_FFMPEG_FFPLAY=y
BR2_PACKAGE_FFMPEG_AVRESAMPLE=y
BR2_PACKAGE_GSTREAMER1=y
BR2_PACKAGE_GST1_PLUGINS_GOOD=y
BR2_PACKAGE_GST1_PLUGINS_BAD=y
BR2_PACKAGE_GST1_PLUGINS_UGLY=y
BR2_PACKAGE_GST1_INTERPIPE=y
BR2_PACKAGE_GST1_LIBAV=y
BR2_PACKAGE_DIRECTFB=y
BR2_PACKAGE_MESA3D=y
BR2_PACKAGE_MESA3D_GALLIUM_DRIVER_SWRAST=y
BR2_PACKAGE_MESA3D_DRI_DRIVER_SWRAST=y
BR2_PACKAGE_MESA3D_OPENGL_EGL=y
BR2_PACKAGE_MESA3D_OPENGL_ES=y
BR2_PACKAGE_XORG7=y
BR2_PACKAGE_XSERVER_XORG_SERVER=y
BR2_PACKAGE_XAPP_SETXKBMAP=y
BR2_PACKAGE_XAPP_TWM=y
BR2_PACKAGE_XAPP_XCLOCK=y
BR2_PACKAGE_XAPP_XINIT=y
BR2_PACKAGE_XAPP_XRANDR=y
BR2_PACKAGE_XDRIVER_XF86_INPUT_KEYBOARD=n
BR2_PACKAGE_XDRIVER_XF86_INPUT_MOUSE=y
BR2_PACKAGE_XDRIVER_XF86_VIDEO_FBDEV=y
BR2_PACKAGE_XDRIVER_XF86_VIDEO_FBTURBO=y
BR2_PACKAGE_XTERM=y
BR2_PACKAGE_OPENBOX=y
BR2_PACKAGE_PYTHON=y
BR2_PACKAGE_LIBDRM_NOUVEAU=y
BR2_PACKAGE_LIBGTK3=y
# BR2_PACKAGE_LIBGTK3_BROADWAY is not set
# BR2_PACKAGE_LIBGTK3_WAYLAND is not set
BR2_PACKAGE_LIBGTK3_DEMO=y
BR2_PACKAGE_LIBSERIALPORT=y
BR2_PACKAGE_SCREEN=y
BR2_PACKAGE_SUDO=y
BR2_PACKAGE_HTOP=y
BR2_PACKAGE_NANO=y
BR2_TARGET_ROOTFS_EXT2=y
BR2_TARGET_ROOTFS_EXT2_4=y
BR2_TARGET_ROOTFS_EXT2_SIZE="300M"
BR2_TARGET_UBOOT=y
BR2_TARGET_UBOOT_BUILD_SYSTEM_KCONFIG=y
BR2_TARGET_UBOOT_CUSTOM_VERSION=y
BR2_TARGET_UBOOT_CUSTOM_VERSION_VALUE="2017.05"
BR2_TARGET_UBOOT_BOARD_DEFCONFIG="A13-OLinuXino"
BR2_TARGET_UBOOT_NEEDS_DTC=y
BR2_TARGET_UBOOT_SPL=y
BR2_TARGET_UBOOT_SPL_NAME="u-boot-sunxi-with-spl.bin"
BR2_TARGET_UBOOT_BOOT_SCRIPT=y
BR2_TARGET_UBOOT_BOOT_SCRIPT_SOURCE="board/olimex/a13_olinuxino/boot.cmd"
BR2_PACKAGE_HOST_DOSFSTOOLS=y
BR2_PACKAGE_HOST_GENIMAGE=y
BR2_PACKAGE_HOST_MTOOLS=y
BR2_PACKAGE_HOST_UBOOT_TOOLS=y

谢谢。

Answer 1

您的 buildroot 配置究竟是什么？（运行制作 savedefconfig 并在此处粘贴 defconfig 文件）。请注意，在您完成构建后，Buildroot 不会注意到许多 gst1-plugins-* 选项的更改，因此您需要进行干净构建（make clean；make）以使更改生效。

详见手册： https://buildroot.org/downloads/manual/manual.html#full-rebuild

Gstreamer 1.0 no such or plugin 'videotestsrc' on buildroot 问题

Gstreamer 1.0 no such or plugin 'videotestsrc' on buildroot problem

linux-kernel

embedded-linux

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gstreamer-1.0