Have you registered the custom metadata property as a namespace in your QA instance? More info here: https://techrevel.blog/2020/01/23/aem-custom-namespace/ (non-Adobe)

We have been using zip uploads for work in progress files, support documents that needs to go to distributors/external users. We have restricted .exe by default but some files need to go as zipped and the approach is working fine for us.

There's a way to update all the expiration dates to a future value by using bulk metadata export-import feature of AEM.You can simply export the expiration column for all assets from a root folder (value prism:expirationDate{{Date}} ), edit the excel file, import to update the changes.Process descri...

Have you checked "Include assets in Subfolders" option? Please try selective columns/properties to check the result once. You might want to clear cache and cookies, also restart the browser once before testing again.

We have been using Step 1 for approx 30k batch, without any issues. Both the tools work fine. Usually an admin should be able to use ACS tools and general authors the OOTB metadata import option.  

Have you tried playing the video without the dispatcher? Try the page with IP. Also, check the issue with a smaller video first. What happens when you turn off the auto-play, does buffering takes some time still?

You can utilize AEM DAM for storing and hosting documents. These can be integrated with Dynamic Media (additional license) and displayed using viewers functionality. You can get more info here:  https://experienceleague.adobe.com/docs/experience-manager-64/assets/dynamic/managing-viewer-presets.html...

The features and look-feel will be same as you are managing the assets in both the platforms.The difference comes in license, pricing, user base of these tools. Brand Portal is primarily used for collaboration with channel partners, distributors, external users with internal org users.More info: htt...

Can't find much info online, but here's an extensive guide for your reference: https://www.hotjar.com/blog/integrations/No harm in trying an integration with your local AEM instance.

Please try the folloing:1. logging in with admin credentials.2. Trying the IP address instead of domain name.3. Alternatively, try using AEM Desktop app and see if the connection works for and you are able to upload assets.https://experienceleague.adobe.com/docs/experience-manager-desktop-app/using/...