Streambox Cloud Encoder (32-bit software)
Streambox Cloud Encoder is a free software Encoder for Mac that uses Streambox’s proprietary ACT-L3 codec and the Streambox Cloud Service.
Streambox Cloud Encoder is 32-bit software, so macOS Mojave (10.14) is the final version of macOS to support 32-bit application software. Mojave is a 64-bit OS, but it allows 32-bit apps to run; Catalina was the first MacOS to not allow 32-bit apps.
Here is a link to the final version of Streambox Cloud Encoder:
http://update.streambox.com/updater/cloudenc/3.169.01/CloudEncoder.3.169.01.zip
Cloud Encoder is ACT-L3 only, which means it's limited to 8-bit, 4:2:0, and 4:2:2 Rec.709 Legal color.
Cloud Encoder is 32-bit software, so you're limited in which Blackmagic hardware is supported, as well as drivers. Any hardware models released after mid-2018 will not work. Because the Cloud Encoder software is 32-bit software, it can't support newer versions of Blackmagic Desktop Video than 10.9.12, and most of Blackmagic's newer Ultrastudio and Decklink hardware require newer (64-bit) drivers from Blackmagic.
Cloud Encoder’s free version only streams to the Streambox Cloud Service. However, a paid activation will allow the Cloud Encoder to stream to other locations such as Streambox Enterprise Server, Streambox Hardware Decoder, or Streambox Media Player.
List of the capture card supported by CloudEncoder
https://streambox.force.com/support/s/article/supported-external-inputoutput-hardware
The following products are supported for HD-SDI, SD-SDI, or HDMI input:
Blackmagic Ultrastudio Mini Recorder (Thunderbolt)
Blackmagic Ultrastudio Express (Thunderbolt)
Blackmagic Ultrastudio 3D (Thunderbolt)
Blackmagic Ultrastudio 4K (Thunderbolt)
Blackmagic Ultrastudio 4K Extreme (Thunderbolt)
Blackmagic Decklink Studio (PCIe)
Blackmagic Decklink SDI (PCIe)
Blackmagic Decklink Mini Recorder (PCIe)
Changelog:
CloudEncoder v3.169.01 (2020/11/04)
Added support for Private Cloud Virtual Machines
Improved detection of 30p streams; added 50p,60p,59.94p.
Improved signal detection in general. On connecting a new signal, click "Apply & Restart" once to detect the new signal. Older versions required more than one app restart.
NOTE: 50-60 fps requires Blackmagic Ultrastudio 4K or other supported input hardware that supports greater than 30 fps. Blackmagic Ultrastudio Mini Monitor does not support 50-60 fps.
This product is no longer under development; it has been replaced by Streambox Spectra, which is 64-bit software and will work on Mojave through Monterey (and later, we expect). Unlike the Cloud Encoder, though, it's not free but is paid for on a subscription model, and your subscription includes some cloud data.
https://www.streambox.com/introducing-spectra/
Here is the link to download the Spectra application:
https://streambox-spectra.s3-us-west-2.amazonaws.com/latest/macos/spectra.zip
At this time we don't have a free version, but as we continue to develop with it, we may release a feature-limited cloud-only version like the Cloud Encoder.
NOTE: Software Encoders are stereo only, any hardware can stream up to 8 channels by default, and 16 with the paid add-on.