Blue shadow on mov files with alpha

Forum|Forum|6 years ago
February 26, 2020
4 replies
2279 views

I recently started having this problem on premiere v13, I'm currently using v13.1.5, as my computer is running MacOS Sierra.

When I first import the mov files with alpha, they looked fine. The problem only starts after I close premiere and open it again. It always happens if the mov file has drop shadow or any form of feathering effect added to it.

I've tried rendering these mov files with both ProRes4444 and Animation codec (with alpha) and the problem still persists. The mov files are not set to any other Blending mode except "Normal". I tried clearing cache, removing the file and re-importing them, restart my computer, nothing works. It seems like once Premiere decided to put that blue shadow on the file, it will remain like this unless I render a new one from After Effects, then it will work normally until I close Premiere again.

Import

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RaquelM

Participant

2024 and the issue is still here....🫠

T

Trent Happel

Participating Frequently

We have seen a few reports of a blue hue added to Alpha channels with some media formats. In these cases, they appear to be GPU-related. If you go to File menu > Project Settings > General > Video Rendering and Playback and set to Mercury Playback Engine Software Only, do the files now appear correct?

I will pass this on to the team investigating this issue.

bizzy401

Participating Frequently

I did as you instructed and it did reduce the efffect by about 90%, but the problem still persists.

R Neil Haugen

Legend

Maybe @TrentHappel could chase this down ...

Neil

Everyone's mileage always varies ...

bizzy401

Participating Frequently

I am having this exact problem. Has anyone found a solution? This is problem has brought my entire wrokflow to a stand still.

hironyxAuthor

Participant

unfortunately i have not found a fix to this day. however, i have been working around this problem by rendering all my gfx without drop shadows or any kind of fading background. i add the drop shadows in premiere using premiere's own drop shadow effect, and as for fading backgrounds, i use photoshop to create a gradient to transparent image and then import them into premiere.