{"id":7430,"date":"2021-11-21T23:13:22","date_gmt":"2021-11-22T04:13:22","guid":{"rendered":"https:\/\/www.rocketshipgames.com\/blogs\/tjkopena\/?p=7430"},"modified":"2022-07-01T08:57:37","modified_gmt":"2022-07-01T12:57:37","slug":"video-autoplay-on-pi-zero-w","status":"publish","type":"post","link":"https:\/\/www.rocketshipgames.com\/blogs\/tjkopena\/2021\/11\/video-autoplay-on-pi-zero-w\/","title":{"rendered":"Video Autoplay on Pi Zero W"},"content":{"rendered":"

Brett’s working on a new RC car featuring an entertainment center. The media’s powered by a Raspberry Pi Zero W<\/a>. A Waveshare 2 inch LCD<\/a> currently provides the display. The instructions from Waveshare at the link are actually very good, but the following has a few additional notes and collected links.<\/p>\n

\"\"<\/a><\/p>\n

Connection<\/h2>\n

I’m trying to do all this setup without hooking up a keyboard or display. I spent a good while trying to configure networking via USB OTG but that’s still a work-in-progress. So instead I set up WiFi so I could SSH in.<\/p>\n

First order of business is imaging the micro-SD card with Raspberry Pi OS using the Raspberry Pi Imager<\/a>, available for Arch via the AUR<\/a>. In this article I’m working with:<\/p>\n

\r\nLinux raspberrypi 5.10.63+ #1459 Wed Oct 6 16:40:27 BST 2021 armv6l GNU\/Linux\r\n<\/pre>\n
On the imaged micro-SD card you touch boot\/ssh<\/code> to enable SSH.<\/p>\n
In boot<\/code> on the micro-SD card create the file wpa_supplicant.conf<\/code> with contents:<\/p>\n
\r\ncountry=US # Your 2-digit country code\r\nctrl_interface=DIR=\/var\/run\/wpa_supplicant GROUP=netdev\r\nnetwork={\r\n    ssid="YOUR_NETWORK_NAME"\r\n    psk="YOUR_PASSWORD"\r\n    key_mgmt=WPA-PSK\r\n}\r\n<\/pre>\n
Display<\/h2>\n
Next is configuration to enable the display.<\/p>\n
Add the following in boot\/config.txt<\/code> on the micro-SD card:<\/p>\n
\r\n    hdmi_force_hotplug=1\r\n    hdmi_cvt=640 480 60 1 0 0 0\r\n    hdmi_group=2\r\n    hdmi_mode=1\r\n    hdmi_mode=87\r\n    display_rotate=0\r\n<\/pre>\n
Also in boot\/config.txt<\/code>, comment out:<\/p>\n
\r\n    dtoverlay=vc4-fkms-v3d\r\n    max_framebuffers=2\r\n<\/pre>\n
Pop the micro-SD into the device and boot. If you don’t have Bonjour or Avahi setup to resolve raspberrypi.local<\/code>, look on your router’s devices table to get the IP address for the Pi. The default login is pi<\/code>\/raspberry<\/code>. Change the password with passwd<\/code> to be extra safe.<\/p>\n
Enable SPI via raspi-config<\/code>, under the Interfaces menu, and reboot.<\/p>\n
Install the BCM2835 library<\/a> from AirSpayce.<\/p>\n
Install wiringPi<\/a>. It’s seemingly no longer included in the Pi OS default image or its repositories so you’ll have to download & install manually.<\/p>\n
Install and run Waveshare’s demos<\/a> to make sure the display’s wiring is correct.<\/p>\n
Install framebuffer copy and start it running:<\/p>\n
\r\nsudo apt-get install -y cmake p7zip-full\r\nwget https:\/\/www.waveshare.com\/w\/upload\/8\/8d\/Waveshare_fbcp-main.7z\r\n7z x Waveshare_fbcp-main.7z\r\ncd waveshare_fbcp-main\r\nmkdir build\r\ncd build\r\ncmake -DSPI_BUS_CLOCK_DIVISOR=20 -DWAVESHARE_2INCH_LCD=ON -DBACKLIGHT_CONTROL=ON -DSTATISTICS=0 ..\r\nmake -j\r\nsudo .\/fbcp &\r\n<\/pre>\n
Install VLC using the vlc<\/code> package.<\/p>\n
In SSH, use cvlc -f movie.mp4<\/code> to run the video after uploading it to the device.<\/p>\n
https:\/\/www.rocketshipgames.com\/blogs\/tjkopena\/wp-content\/uploads\/2021\/11\/PXL_20211122_0001501472.mp4<\/a><\/video><\/div>\n
 <\/p>\n
Autoplay<\/h2>\n
To have the video autoplay at boot, create the file \/etc\/xdg\/autostart\/movie-autoplay.desktop<\/code> with contents:<\/p>\n
\r\n  [Desktop Entry]\r\n  Name=Movie Autoplay\r\n  Exec=cvlc -f --loop --no-video-title \/home\/pi\/Videos\/autoplay.mp4\r\n<\/pre>\n
You also need to have fbcp<\/code> start on boot, via adding it to \/etc\/rc.local<\/code> (just before exit<\/code>).<\/p>\n
Video Crop<\/h2>\n
For what it’s worth, the video playing above is captured from YouTube<\/a>. That video has black borders, which can be measured and cropped out quickly using ffmpeg. Use the cropdetect<\/code> utility filter to determine the border size:<\/p>\n
\r\nffmpeg -i cowboy-bebop.mp4  -vf cropdetect -f null -\r\n<\/pre>\n
This will report a bunch of lines like the following:<\/p>\n
\r\n[Parsed_cropdetect_0 @ 0x558f57561c00] x1:52 x2:373 y1:0 y2:239 w:320 h:240 x:54 y:0 pts:2156154 t:89.839750 crop=320:240:54:0\r\n<\/pre>\n
The reported crop parameters can then be passed to ffplay<\/code> to test and ffmpeg<\/code> to recut the video:<\/p>\n
\r\nffplay -vf crop=320:240:54:0 cowboy-bebop.mp4\r\nffmpeg -i cowboy-bebop.mp4 -vf crop=320:240:54:0 -c:a copy cowboy-bebop-320px.mp4\r\n<\/pre>\n
Splash Screen<\/h2>\n
To replace the bootloader splash screen, just replace \/usr\/share\/plymouth\/themes\/pix\/splash.png<\/code>. The image will seemingly work best if it’s 1024×768 even though that’s not the display resolution.<\/p>\n
\"\"<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"
Brett’s working on a new RC car featuring an entertainment center. The media’s powered by a Raspberry Pi Zero W. A Waveshare 2 inch LCD currently provides the display. The instructions from Waveshare at the link are actually very good, but the following has a few additional notes and collected links. Connection I’m trying to … Continue reading →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":7431,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[58],"tags":[257,400],"class_list":["post-7430","post","type-post","status-publish","format-standard","hentry","category-code","tag-featured","tag-pi"],"_links":{"self":[{"href":"https:\/\/www.rocketshipgames.com\/blogs\/tjkopena\/wp-json\/wp\/v2\/posts\/7430","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.rocketshipgames.com\/blogs\/tjkopena\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.rocketshipgames.com\/blogs\/tjkopena\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.rocketshipgames.com\/blogs\/tjkopena\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.rocketshipgames.com\/blogs\/tjkopena\/wp-json\/wp\/v2\/comments?post=7430"}],"version-history":[{"count":10,"href":"https:\/\/www.rocketshipgames.com\/blogs\/tjkopena\/wp-json\/wp\/v2\/posts\/7430\/revisions"}],"predecessor-version":[{"id":7445,"href":"https:\/\/www.rocketshipgames.com\/blogs\/tjkopena\/wp-json\/wp\/v2\/posts\/7430\/revisions\/7445"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.rocketshipgames.com\/blogs\/tjkopena\/wp-json\/wp\/v2\/media\/7431"}],"wp:attachment":[{"href":"https:\/\/www.rocketshipgames.com\/blogs\/tjkopena\/wp-json\/wp\/v2\/media?parent=7430"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.rocketshipgames.com\/blogs\/tjkopena\/wp-json\/wp\/v2\/categories?post=7430"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.rocketshipgames.com\/blogs\/tjkopena\/wp-json\/wp\/v2\/tags?post=7430"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}