FPV Camera(RPI3+V2.1) | wfb_ng Release 23.01 | Ubuntu 20.04 xfce软解测试

Posted 2023-03-14 lida2003

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@[TOC](FPV Camera(RPI3+V2.1) | wfb_ng Release 23.01 | Ubuntu 20.04 xfce软解测试)

1. 简介

与其他Linux桌面系统相比，Xfce消耗更少的CPU，仅使用1%的CPU。因此低CPU是Xfce的独特卖点之一。在FPV Camera(RPI3+V2.1) | wfb_ng Release 23.01 | Intel® Core™2 Duo CPU T6570 @ 2.10GHz gnome软解测试上，发现genome在720P 60FPS时，H264解码占用大量CPU资源，因此我们尝试减少桌面系统对CPU的占用率来看看有什么新的发现。

2. 安装xfce

xfce安装

$ sudo apt install tasksel
$ sudo tasksel install xubuntu-desktop
$ sudo apt install xfce4
$ sudo apt install xfce4-goodies

浏览器firefox无法上网，使用chromium替换

$ sudo apt-get remove firefox
$ sudo apt-get install chromium-browser

重启系统使用xfce桌面

$ sudo reboot

3. 测试

3.1 gst-launch-1.0 1280x720 720P 30FPS

gst-launch-1.0 v4l2src do-timestamp=true io-mode=mmap device=/dev/video0 \\
				extra-controls="controls,image_stabilization=1,h264_profile=4,h264_i_frame_period=60,h264_level=11,power_line_frequency=1,exposure_metering_mong=1,exposure_dynamic_framerate=0,scene_mode=0,video_bitrate_mode=1,video_bitrate=2000000,repeat_sequence_header=1" \\
				! video/x-h264,profile=high,width=1280,height=720,framerate=30/1,stream-format=byte-stream \\
				! h264parse disable-passthrough=true ! rtph264pay config-interval=1 pt=96 mtu=1400 aggregate-mode=zero-latency ! udpsink host=127.0.0.1 port=5602 sync=false

gst1280x720@fps30

3.2 gst-launch-1.0 1280x720 720P 45FPS

gst-launch-1.0 v4l2src do-timestamp=true io-mode=mmap device=/dev/video0 \\
				extra-controls="controls,image_stabilization=1,h264_profile=4,h264_i_frame_period=60,h264_level=11,power_line_frequency=1,exposure_metering_mong=1,exposure_dynamic_framerate=0,scene_mode=0,video_bitrate_mode=1,video_bitrate=2000000,repeat_sequence_header=1" \\
				! video/x-h264,profile=high,width=1280,height=720,framerate=45/1,stream-format=byte-stream \\
				! h264parse disable-passthrough=true ! rtph264pay config-interval=1 pt=96 mtu=1400 aggregate-mode=zero-latency ! udpsink host=127.0.0.1 port=5602 sync=false

gst1280x720fxce@fps45

3.3 gst-launch-1.0 1280x720 720P 60FPS

gst-launch-1.0 v4l2src do-timestamp=true io-mode=mmap device=/dev/video0 \\
				extra-controls="controls,image_stabilization=1,h264_profile=4,h264_i_frame_period=60,h264_level=11,power_line_frequency=1,exposure_metering_mong=1,exposure_dynamic_framerate=0,scene_mode=0,video_bitrate_mode=1,video_bitrate=2000000,repeat_sequence_header=1" \\
				! video/x-h264,profile=high,width=1280,height=720,framerate=60/1,stream-format=byte-stream \\
				! h264parse disable-passthrough=true ! rtph264pay config-interval=1 pt=96 mtu=1400 aggregate-mode=zero-latency ! udpsink host=127.0.0.1 port=5602 sync=false

gst1280x720fxce@fps60

3.4 gst-launch-1.0 800x600 SVGA 60FPS

gst-launch-1.0 v4l2src do-timestamp=true io-mode=mmap device=/dev/video0 \\
				extra-controls="controls,image_stabilization=1,h264_profile=4,h264_i_frame_period=60,h264_level=11,power_line_frequency=1,exposure_metering_mong=1,exposure_dynamic_framerate=0,scene_mode=0,video_bitrate_mode=1,video_bitrate=2000000,repeat_sequence_header=1" \\
				! video/x-h264,profile=high,width=800,height=600,framerate=60/1,stream-format=byte-stream \\
				! h264parse disable-passthrough=true ! rtph264pay config-interval=1 pt=96 mtu=1400 aggregate-mode=zero-latency ! udpsink host=127.0.0.1 port=5602 sync=false

gst800x600fxce@fps60

3.5 gst-launch-1.0 640x480 VGA 60FPS

gst-launch-1.0 v4l2src do-timestamp=true io-mode=mmap device=/dev/video0 \\
				extra-controls="controls,image_stabilization=1,h264_profile=4,h264_i_frame_period=60,h264_level=11,power_line_frequency=1,exposure_metering_mong=1,exposure_dynamic_framerate=0,scene_mode=0,video_bitrate_mode=1,video_bitrate=2000000,repeat_sequence_header=1" \\
				! video/x-h264,profile=high,width=640,height=480,framerate=60/1,stream-format=byte-stream \\
				! h264parse disable-passthrough=true ! rtph264pay config-interval=1 pt=96 mtu=1400 aggregate-mode=zero-latency ! udpsink host=127.0.0.1 port=5602 sync=false

gst640x480fxce@fps60

3.6 gst-launch-1.0 480x320 HVGA 60FPS

gst-launch-1.0 v4l2src do-timestamp=true io-mode=mmap device=/dev/video0 \\
				extra-controls="controls,image_stabilization=1,h264_profile=4,h264_i_frame_period=60,h264_level=11,power_line_frequency=1,exposure_metering_mong=1,exposure_dynamic_framerate=0,scene_mode=0,video_bitrate_mode=1,video_bitrate=2000000,repeat_sequence_header=1" \\
				! video/x-h264,profile=high,width=480,height=320,framerate=60/1,stream-format=byte-stream \\
				! h264parse disable-passthrough=true ! rtph264pay config-interval=1 pt=96 mtu=1400 aggregate-mode=zero-latency ! udpsink host=127.0.0.1 port=5602 sync=false