I have installed CamTwist on my MacBook (mid-2015 - Retina display). Now every app uses that by default. I want the default webcam to be the FaceTime HD camera installed in my MacBook. CamTwist is a software package that lets you add special effects to your video chats as well as being a simple video switcher. It's also possible to stream your desktop and still images. In the CamTwist preferences select your desired frame rate, and video size. Close the preferences and go to the main CamTwist options. Select ‘Desktop’ and then select the monitor your OBS output is being displayed on OR do a resizeable selection of the same screen. You should now see ‘Cam Twist’ as a webcam option. Next, launch CamTwist, select Syphon as your video source in the first column, and the Camera Live server from the drop-down on the far right portion of the screen. Once it's running, you'll be. Apr 03, 2021 Mac - CamTwist. Note: The following instructions have been verified to work on Mac OS X 10.7.x (Lion). They will probably work on older versions of Mac OS X as well, but for best results, you should upgrade to the latest version. There are several pieces of software that you will need to download and install.
In-Line breakaway
Catlow’s CAM TWIST Magnetic In-Line Breakaway design is the future of breakaway technology.
The CAM TWIST gives you the assurance of a breakaway that will preform when you need it most. The CAM TWIST breakaway is held together with powerful “Rare Earth Permanent Magnets”. There is no other breakaway that gives you the option to easily disconnect, inspect and reconnect while installed. With a twist the breakaway can be taken apart and inspected for damage, corrosion and wear without removing the breakaway from service. There will no longer be the need to have a ‘remove by’ date on your breakaway.
The CAM TWIST is designed to be installed between the fuel dispenser and the nozzle. to inspect the unit, two wrenches applied to opposite ends of the breakaway with a twisting motion mechanically separates the unit. The unique design seals the internal components before separation is complete, thus reducing any exposure to product and any environmental impact. With the cam twist Magnetic ‘snap-back technology’ alignment and reconnection is easy. Align the two halves together and let the magnets do the work while pushing the unit back together. It’s that easy! As a cost saving feature, Catlow has designed a replacement lower half of the breakaway. If a lower half is lost due to drive-off, a replacement lower half can be ordered saving you money.
- UL/ULC listed
- Meets NFPA 30A codes
- CTMCA model is CARB Certified
- Patented Magnetic Snap-back technology
- Resists “Hydraulic Hammer” problems
- Regular maintenance is not required but is available as an option
- The only onsite, inspectable breakaway with no 'remove by' date
- Industry-leading, max separation force designed at 350 lbs.
- Reduces environmental impact and ensures no leaking with a double O-ring seal
- Consistent separation force after multiple reconnections
- Payback after second drive-off
- Fastest reconnect on the market
- Minimal tools required for reattachment
- Replacement lower half of breakaway is available
- 12-month warranty
Ordering Specifications
- Model Number Description
- CTM75 - 3/4' CAM TWIST Breakaway
- CTM100 - 1' CAM TWIST Breakaway
- CTMVA - Vac Assist CAM TWIST Breakaway
- CTMCA - California Vac Assist CAM TWIST Breakaway
With the COVID-19 lockdown, I needed to do some videoconferencing with zoom.us, but I wanted something higher quality than my MacBook’s built-in webcam. So instead I wanted to use my Canon 5D III. (These instructions are for macOS only, not Windows)
First we need to export your camera’s proprietary liveview into a video stream we can use. To do this you can install v002-Camera-Live:
Turn on your camera and connect it to your computer with USB, then run Camera Live and double click your camera in the list to activate it. This makes the liveview output from your Canon camera available as a Syphon video stream.
But zoom.us doesn’t support Syphon video directly, it only supports webcams. So you now need to convert the Syphon stream into a virtual webcam using CamTwist Studio:
In CamTwist’s menu, go into Preferences and change the resolution to 1280×720 and the framerate to 25 fps, then quit CamTwist and reopen it. Double click “Syphon” in the left pane, then on the right pane select “Camera Live” as your source. Now in the menu bar, click View -> Preview, and you should see a small preview window from your Canon camera:
Camtwist For Skype
If your camera falls asleep, you will need to half-press its shutter to wake it back up and reselect the Camera Live stream in the right pane.
Now your Canon camera will appear as a webcam in Chrome’s settings, at least in Chrome version 81, so you’ll be able to use it with various webapps. But it will not be available in the Zoom.us app’s video settings if you’re using Mojave or Catalina. This is because Zoom is running in a high security mode that prevents CamTwist’s extension from being loaded into it.
To fix this you need to codesign the zoom.us app to add an entitlement which allows it to load libraries from third-party authors. Quit Zoom if it is already running.
Camtwist For Mac
First, create a codesigning identity for yourself:
- Open the “Keychain Access” app
- In the main menu select Keychain Access -> Certificate Assistant -> Create a certificate…
- Call it “my-zoom”, set identity type to “self-signed root”, and certificate type to “code signing”
- Click Create, and continue to finish the wizard
Now run these commands in the Terminal to make a new copy of the zoom.us app on your desktop and export its current entitlements to a file:
Open up the entitlements.plist file that is created on your desktop in TextEdit to add these two lines before the closing </dict>:
The end result should look like this:
Now back in the Terminal, you can use that new entitlements file to re-sign Zoom:
Now you have a fixed version of Zoom on your desktop ready to use! You can either move it into your Applications folder to replace the original one, or keep it on the desktop. You may need to right-click on it and click “Open” to run it instead of double-clicking on it. Now if you enter Zoom’s preferences, you should find CamTwist as a choosable camera and everything will work nicely:
Camtwist Alternative Mac
Note that you’ll likely need to repeat this codesigning when Zoom is updated.