ProRes 4444 alpha channel not recognized in Vegas Pro 16

Marco_Polo wrote on 12/6/2018, 3:28 AM

I am using Vegas Pro 16 build 307 on Windows 10.

When I import footage from an external party encoded in ProRes 4444, the alpha channel is not recognized.

Setting the alpha channel to 'straight' of 'premultiplied' makes no difference; alpha channel not visible/working.

How to solve this? Or is this a known error?



altarvic wrote on 12/6/2018, 4:30 AM

Or is this a known error?


Marco_Polo wrote on 11/26/2019, 4:18 AM

Update: I have upgraded to Vegas Pro 17 build 353 and this known error is gone.

So ProRes 4444 alpha channel is recognized now.

michael-harrison wrote on 6/27/2020, 1:23 PM

It looks like this functionality requires the so4compoundplug.dll be enabled, so if you've disabled it to reduce VPs crashiness, keep that in mind if you need prores alpha support

System 1:

Processor        Intel(R) Core(TM) i7-8700 CPU @ 3.20GHz, 3192 Mhz, 6 Core(s), 12 Logical Processor(s)

BaseBoard Product        ROG STRIX Z390-E GAMING

Installed Physical Memory (RAM)        32.0 GB

Adapter Description        NVIDIA GeForce GTX 1660

Driver Version        Studio <the latest stable>

Resolution        1920 x 1080 x 60 hertz

Video Memory 6G GDDR5


System 2:

Lenovo Yoga 720

Core i7-7700 2.8Ghz quad core, 8 logical

16G ram

Intel HD 630 gpu

Nvidia GTX 1050 gpu