Alpha channel problem in vegas pro edit 17

Greg-40 wrote on 9/28/2019, 12:24 PM

Hi,

I just bought a new laptop (Windows 10 with i7-9750H CPU and GeForce GTX 1660Ti with MaxQ) and upgraded from Vegas 12 to 17 (Build 321).

I am trying to add a title bar on a video but could not get it to look right. In Vegas 12, the title bar only looks right if the alpha channel is set to 'straight' (and not 'premultiplied'). But I found that in Vegas 17, 'straight' or 'premultiplied' setting gave me the same weird looking title bar.

The title bar is a MOV file which is recognised as 'QuickTime' in Vegas 12 but as 'Magix Intermediate' in Vegas 17. Could this cause the problem? I have installed Quicktime and enabled the Quicktime Plugin in Vegas 17 but it did not solve the problem.

I would really appreciate it if someone can help.

Thank you very much!

Greg

Comments

Greg-40 wrote on 9/29/2019, 12:29 PM

Problem solved by disabling the mxhevcplug.dll plugin.

Browse to C:\Program Files\VEGAS\VEGAS Pro 17.0\FileIO Plug-Ins\mxhevcplug (if you are installing to default folder), then rename this folder to something else, like 'mxhevcplug_OFF'.

ltjoe118 wrote on 4/18/2020, 4:22 AM

Wow! After hours and hours wondering why all my transition alpha's looked to have some odd opacity issue, this actually fixed it. II appreciate you posting this and how obscure the issue is that no one else has even mentioned this anywhere on YouTube or something. I almost switched to Davinci and have to learn the whole thing but thanks to this, I salute you.