[Dmitry Kitsov]

You should have the option to turn on the Export Alpha checkbox in the Video panel of the render settings whenever you render individual source clips starting with version 12.5. When you do so, DaVinci Resolve renders clips with alpha channels in either of two cases:
• Whenever there is an alpha channel embedded in the source media for that clip, the embedded alpha channel will be copied to the rendered version of that clip.
• Whenever a clip’s grade has a key connected to an alpha output, the alpha output will be rendered as an alpha channel for that clip.

If a specific Codec/Format does not have this ability you will not see the Export Alpha check box under the Video tab of the delivery page settings.
DPX RGBA is another format that supports it.
DPX 8 bit alpha is intended to produce a DPX with only alpha present.

Dmitry Kitsov,
Blackmagic Design technical support agent

[Dmitry Kitsov]

Not all of the codecs are available on Windows (for example you will not be able to deliver ProRes on Windows). There is also a possibility of different feature set on Windows platform, than that available on macOS, for the same codec.
A thorough testing of any intended workflow is recommended.

Dmitry Kitsov,
Blackmagic Design technical support agent

[Dmitry Kitsov]

Following codecs were exported from Resolve 12.5.4 and opened in Fusion with alpha intact on Mac OS X:
DNxHR444.mov,
GrassValleyHQX.mov,
GrassValleyHQ.mov,
ProRes4444.mov,
ProRes4444XQ.mov,
UncompressedARGB.mov,
UncompressedBGRA.mov;

After Effects 2017 accepted with Alpha intact:
ProRes4444.mov,
ProRes4444XQ.mov,
UncompressedARGB.mov,
GrassValleyHQX.mov,
GrassValleyHQ.mov,
UncompressedBGRA.mov.

Please make sure you have appropriate codecs installed, where appropriate for the third party application support.
Please refer to the references like operation manuals for mentioned applications on the information on how to produce or import media with alpha.

Dmitry Kitsov,
Blackmagic Design technical support agent

[Dmitry Kitsov]

There are no issues with alpha channel as included by Resolve that we know of.

Dmitry Kitsov,
Blackmagic Design technical support agent

[Dmitry Kitsov]

Hello, Mike. My post that you have referenced, was true prior to Resolve, with version 12.5 release, being able to embed alpha channel to some of the output format/codecs combination. It is still true and the grey scale matte image is still a valid method that can still be used be used.

Dmitry Kitsov,
Blackmagic Design technical support agent

[Dmitry Kitsov]

Hello, Stephen,
pop out the gallery window using the symbol that looks like 4 arrows pushing out to the corners of the square. You will see DaVinci Resolve Looks available to you.

Dmitry Kitsov,
Blackmagic Design technical support agent

[Dmitry Kitsov]

DRP project from one Resolve system can be opened on a different host running the same version of Resolve.
At that time this project can use the same originals as we’re present on am original host and a delivery of the media for Avid can commence. If any revisions are to be done, this can be achieved my emailing or sharing a DRP file.
Original post was only missing the DRP export /import and media relinking step.

Dmitry Kitsov,
Blackmagic Design technical support agent

[Dmitry Kitsov]

You may export project from Resolve as a DRP and import that DRP on a different system. Relinking the media might be necessary

Dmitry Kitsov,
Blackmagic Design technical support agent

[Dmitry Kitsov]

It has been moved to the primary controls pane. Please refer to the page 646 of the September 2015 reference manual.

Dmitry Kitsov,
Blackmagic Design technical support agent

[Dmitry Kitsov]

Hello, John,
this tab is only accessible for those clips that are original camera raw material.
Additionally, this tab default to a Project decoding settings by default. If some of the settings are not available change the “decode using” from project to clip.

Dmitry Kitsov,
Blackmagic Design technical support agent