Example-3: (USB-Camera → Decode → Display) - 2024.1 English

Connect USB camera to the board (Verified Cameras: Logitech HD camera, C920).

1. Connect USB camera to the board (Verified Cameras: Logitech HD camera, C920).
2. Run the following command for USB video decode display pipeline:

   vcu-demo-camera-decode-display.sh -s 1920x1080

3. Run the command for USB video decode pipeline with audio:

   ALSA Library API

   vcu-demo-camera-decode-display.sh -a aac --use-alsasrc -i "hw:1,0" --use-alsasink --audio-output "hw:0,0"

   Pulse Library API

   vcu-demo-camera-decode-display.sh -s 640x480 -a aac -i 
   "alsa_input.usb-046d_HD_Pro_Webcam_C920_C06272EF-02. analog-stereo" \
   --use-pulsesrc --use-pulsesink --audio-output "alsa_output. 
   platform-fd4a0000.zynqmp-display_zynqmp_dp_snd_card. analog-stereo"

   Note: For "How to Guide" on selecting the values of arguments to be passed to -i and ---audio-output option, refer section 10.2.

   Gstreamer Autoaudiosrc and Autoaudiosink plugins

   vcu-demo-camera-decode-display.sh -a aac

   Important: Resolutions for Example 2 and 3 must be set based on USB Camera Capabilities.

To find capabilities, use v4l2-ctl --list-formats-ext. If V4lutils is not installed in the pre-built image, install it using dnf or rebuild the PetaLinux image including v4lutils.