Copy link to clipboard
Copied
I did the update to Media Encoder and Premiere Pro 2020, Media Encoder has given me the option "include alpha channel" in "WebM" format befor the changeover from 2019. I tried to downgrade to 2019 but i still lost the option "include alpha channel". How do I get the option with include alpha channel back?
thanks 4 help.
Don't know if this will help you, but it fixed it for me.
Go to add remove programs, uninstall the Web M plugin. Then redownload the plugin from fnordware.
When I did that it gave me the option for Alpha Channel back.
Copy link to clipboard
Copied
Are you sure that is not a plugin. I only found this info on a google search:
https://exchange.adobe.com/creativecloud.details.11631.webm.html
Copy link to clipboard
Copied
yes i know its a plugin. But it works fine before update to 20. Now it works but still lost the option "include alpha channel".
Copy link to clipboard
Copied
Sorry I don't have anything else. The plugin does say it works for 2020. You can try contacting the developer...
https://exchange.adobe.com/creativecloud.partner.0011400001rvBL2AAM.html
Copy link to clipboard
Copied
I am having the same problem. After upgrading to cc 2020 version, I lost the option to include alpha channel. When I tried to run on the earlier versions (which were still installed) the include alpha check box was on the export menu without the text describing what it was. I check the box, did the export, but there was no alpha channel on the resulting file.
I have no interest in 2020 specific functions. What can I do to get back to a working CC 2019 configuration?
Copy link to clipboard
Copied
Hmmm, I'm testing this in Premiere Pro 14.1.0 on Windows 10 Pro version 1903, and the checkbox is there, in the Video tab at the bottom of the Codec settings section. It's in Media Encoder too.
File a bug with Adobe?
Copy link to clipboard
Copied
Copy link to clipboard
Copied
Are you using a preset, by any chance? Or did you just select WebM from the Format menu?
Copy link to clipboard
Copied
On the media export window I pick WebM as the format, custom as the preset.
There is no checkbox for the alpha channel.
Copy link to clipboard
Copied
A curious bug. Hopefully someone at Adobe will look at it. Wish I could reproduce!
Copy link to clipboard
Copied
Don't know if this will help you, but it fixed it for me.
Go to add remove programs, uninstall the Web M plugin. Then redownload the plugin from fnordware.
When I did that it gave me the option for Alpha Channel back.
Copy link to clipboard
Copied
Thanks - this worked for me too.
Copy link to clipboard
Copied
Yes, I think the Adobe Exchange version is older, from before alpha support was added. Sounds like it!
Copy link to clipboard
Copied
this solution fixed it for me too!
Copy link to clipboard
Copied
Thank you for the suggestion. I did remove the existing WebM plugin and then reinstalled. That fixed the problem.
One note, I was not able to remove it using uninstall program. I had to go the the directory C:\Program Files\Adobe\Common\Plug-ins\7.0\MediaCore and remove WebM.prm
Copy link to clipboard
Copied
I was able to get the checkbox back by uninstalling and re-installing, however, even when exporting with the "include alpha channel" box checked it does not actually export with the alpha channel for me. Did you attempt an export to confirm it actually exported with the alpha channel?
Copy link to clipboard
Copied
I have the option for Alpha channel but it doesn't seem to work. I have no idea why. Spent 2 days trying to find a solution. Can anybody help please
Copy link to clipboard
Copied
I have this issue also, alpha channel ticked but comes out with a black background
Copy link to clipboard
Copied
Same Issue! Anybody have any other solutions for encoding WebM with Alpha channels?
Copy link to clipboard
Copied
Same issue. Anyone have updates?