livestreaming-mac.md

Mac Livestreaming with OBS

To get OBS virtual camera or NDI to work in some video conferencing software you must disable library validation.

• johnboiles/obs-mac-virtualcam#4 (comment)
• https://developer.apple.com/documentation/bundleresources/entitlements/com_apple_security_cs_disable-library-validation

Typically, the Hardened Runtime’s library validation prevents an app from loading frameworks, plug-ins, or libraries unless they’re either signed by Apple or signed with the same team ID as the app. The macOS dynamic linker (dyld) provides a detailed error message when this happens. Use the Disable Library Validation Entitlement to circumvent this restriction.

Zoom, Ring Central

Used 2020

$ cat <<EOF > entitlements.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
  <key>com.apple.security.cs.disable-library-validation</key>
  <true/>
</dict>
</plist>
EOF

sudo codesign --entitlements entitlements.xml -f -s - /Applications/zoom.us.app
sudo codesign --entitlements entitlements.xml -f -s - /Applications/RingCentral.app

MicroSoft Teams

Above fix may have been more appropriate, but I did not test it on Teams yet.

Used 2021 Feb

xcode-select --install
sudo codesign --remove-signature "/Applications/Microsoft Teams.app"
sudo codesign --remove-signature "/Applications/Microsoft Teams.app/Contents/Frameworks/Microsoft Teams Helper.app"
sudo codesign --remove-signature "/Applications/Microsoft Teams.app/Contents/Frameworks/Microsoft Teams Helper (GPU).app"
sudo codesign --remove-signature "/Applications/Microsoft Teams.app/Contents/Frameworks/Microsoft Teams Helper (Plugin).app"
sudo codesign --remove-signature "/Applications/Microsoft Teams.app/Contents/Frameworks/Microsoft Teams Helper (Renderer).app"