P: Ability to sync video from Lightroom Classic to Lightroom Ecosystem

It's not only surprising, but also not acceptable for a "cloud service". However, don't excpect any update regarding LR Classic. They have "officially" announced it's death regarding sync capabilities (integration with could services). If you want cloud, you'll need to migrate to cloud. Fully... (take it of leave it policy)

This lack of functionality is surprising. None of my videos sync from Lightroom classic to Lightroom cloud. I need to upload all my videos manually via the web interface into lightroom cloud. Not to mention that the web upload of videos is tremendously slow even on a 100mbit uplink connection. And then they duplicate in classic. How does this even makes sense?

I have a Lightroom CC subscription. Currently the Creative Cloud will only sync videos captured by my mobile device. However, I would like to be able to sync videos from my desktop to the web (or to my mobile device). Such capabilities exist with other services (e.g. Google Photos). I like the additional features I get from my Lightroom CC subscription, but I also want to be able to upload desktop created videos to the Cloud.

I've also been grappling with this, ehem, limitation (bug!) and have been testing out some workflows to get around it. Interested to hear how others deal with it.

My use case (as others have pointed out) is, that I want to have all of my photos and videos from all my cameras in one place (stored locally on my machine) and then occasionally share some photos and videos for friends/family to see on the web.

Let's say you've gone out and taken a bunch of vacation photos and videos on your DSLR and you want to share some.
Assuming that someone is already invested in Lightroom CC Classic, and has a lot of photos stored there (as I do :), it seems like you either need to:
1) Keep on using LR Classic CC to synch photos to the web, and then upload just the videos with LRCC, or
2) Start uploading all of your photos and videos in LR CC and do some crazy synching acrobatics to make sure that only the stuff you care about sharing is in the cloud.

The problem I've found with (1) (and cygnl7 mentioned this in his post two years ago) is that - assuming all of your photos and videos have been imported in to LR Classic CC - when you separately upload just the videos you want to share to LR CC (i.e. by picking the individual files from "Add Photos"), it re-synchs a copy of them down to LR Classic CC so you have two copies in your library (one shared, one not). Gah. 

For (2), here's what I've worked out:
- Import all of these photos and videos into LR CC (I import into a Collection, let's call it "Vacation - All")
- (They will automatically show up in a Collection in LR Classic CC)
- In LR CC, choose which photos and videos you want to share, and make a new Collection, specifically for sharing (let's call this "Vacation - Shared"). (This will also synch down to LR Classic CC.)
- From CC, Publish that collection to the web. Because you're doing this from CC, it will include photos and videos (yay!)
- Back in LR Classic CC, un-sync the "Vacation - All" Collection, so you can still have all your photos / videos stored locally
- AFAIK, if you Un-synch that Collection, all your vacation photos/videos (not just the ones you want to share) will still be in "All Synced Photographs" (that's what the error message says)
- If you don't want them all to be in "All Synced Photographs" I think you actually need to COPY the "Vacation - All" collection (it will make a new, un-synced collection) and delete the original "Vacation-All" collection, making sure that the checkbox to leave the photos in "All Synced Photographs" is unchecked.

After this crazy set of steps, you'll end up with:
- All your vacation photos / videos stored locally on your machine in LR Classic CC
- Some subset of your photos and videos on LR CC, and accessible from the web for others to view.
- (I think 🙂 

Anyone have any suggestions for how to optimize this?
For what I feel like would be an incredibly basic and high-priority use case, the number of steps here is insane. As is the fact that you literally need to use all the versions of LR (Classic CC, CC, Web) to accomplish this task.

Thank you for your reply. I just found that I hadn't used my trial of Lightroom CC yet, gave it a shot, and sure enough a video I imported into Lightroom CC on my desktop showed up in Lightroom CC mobile!

This is a game-changer for me.

Lightroom CC for desktop can upload to the cloud/mobile apps, but Lightroom Classic can't (and probably never will). You certainly could use the CC desktop or web app to get those clips up to the cloud though. 

Does this work yet? My previous subscription expired a while ago so I have no way of trying this again. I'm still hoping someday I can switch back to Lightroom.

My use case is that I shoot small video clips on my camera, import those into Lightroom desktop, and then want to view those or show them to others via Lightroom mobile.

No!
I’ve already asked for a roadmap (you know, like a respectful company would do) but we can forget it.
As solving the many bugs...

is there a mechanism for Adobe to inform if/when this CRUCIAL feature is implemented?