Vendor the command set the menu and shell depend on

bin/blob-capture-record-webcam

@@ -0,0 +1,21 @@
+#!/bin/bash
+
+# blob:summary=Pick a webcam and start a screen recording with it
+# blob:examples=blob capture screenrecording-with-webcam
+
+mapfile -t devices < <(blob-capture-webcam-list)
+if (( ${#devices[@]} == 0 )); then
+  blob-notify-send "No webcam devices found" -u critical -t 3000
+  exit 1
+fi
+
+if (( ${#devices[@]} == 1 )); then
+  device="${devices[0]%%[[:space:]]*}"
+else
+  selection=$(blob-menu-select "Select Webcam" "${devices[@]}" -- --width 520 --maxheight 520) || exit 1
+  device="${selection%%[[:space:]]*}"
+fi
+
+exec blob-capture-record \
+  --with-desktop-audio --with-microphone-audio \
+  --with-webcam --webcam-device="$device"