Help

This page lists all known issues along with their solutions.

« I don't have an extension folder »

If C:\Program Files (x86)\Common Files\Adobe\CEP\extensions or C:\Users\[NAME]\AppData\Roaming\Adobe\CEP\extensions don't exist, create manually the first one.

« The extension panel is invisible »

Close After Effects and run the Add Keys.reg file.

On macOS, run these commands instead :

defaults write com.adobe.CSXS.14 PlayerDebugMode 1 defaults write com.adobe.CSXS.13 PlayerDebugMode 1 defaults write com.adobe.CSXS.12 PlayerDebugMode 1 defaults write com.adobe.CSXS.11 PlayerDebugMode 1 defaults write com.adobe.CSXS.10 PlayerDebugMode 1 defaults write com.adobe.CSXS.9 PlayerDebugMode 1

« The extension panel is white »

It is because your After Effects version is too old. You need at least After Effects CC 2020 17.5.0. Or you can use uwu2x 6.0 or uwu2x 5.2 instead.

« Please wait indefinitely »

On Windows, it happens when another script or extension changes a global object like JSON, which breaks uwu2x. Close all other scripts and extensions, keep only uwu2x, then restart After Effects to fix it. After that, you’ll need to find which script or extension caused the problem. TextExploder and Reach are known to cause issues.

On macOS, this issue appears when you did not install the extension : you did not run the
xattr -cr uwu2x-pro command correctly. Please follow the installation guide again.

« The progress bar is loading indefinitely »

0.00%
There are several possible solutions :
  • Try to select another GPU in the Settings tab : there is a graphical bug in the GPU list that sometimes causes the names to be swapped ;
  • If you have a NVIDIA gpu, try uwu2x 8.4 NVIDIA-optimized ;
  • Try without the upscale option, enable Smart Mode (Tools tab) ;
  • Your GPU might be too weak to run the extension or incompatible, use uwu2x 6.0 or uwu2x 5.2 instead.

« The progress bar is stuck at 0.00% »

0.00%
The frames are being calculated. Please wait. If it is too slow, make sure the correct GPU is being used, using the Windows Task Manager.

« Where is the MP4 / video format »

The extension outputs PNG / JPG Sequences ; they act as videos in After Effects so it is fine :) With uwu2x 8.x, you can export processed clips as MP4 videos thanks to the Pack folder option in the Settings tab (under the Tools section).

« The processed clip is not smooth »

Make sure there are no dead frames in your clip. Sometimes, if the framerate of your composition is a floating number (like 29,97) it can create issues in the clip. If you do a huge slow motion with the timeremapp property, and there are not enough frames in your clip (even if you did a 16x interpolation), dead frames can appear. To automatically generate new ones, follow these steps :
  • 1 - Make sure the Stretch option is enabled (Settings tab of uwu2x) ;
  • 2 - Interpolate the clip with uwu2x, you can do 16x, and then 2x. The more frames you generate, the slower your slow motion can be without lagging ;
  • 3 - If there are not enough frames (the clip is lagging), add the Twixtor effect to the processed clip (don't edit the Speed, Framerate, or any parameters related to time) ;
  • 4 - Precompose the clip ;
    • precompose
  • 5 - Do your timeremapp stuff on the precomposed clip.

« There are fades in/out in processed clips »

Make sure the framerate of your composition is an integer (like 30, not 29.97)

« I don't know how to use it »

Watch this little tutorial (the Twixtor part is useless) :

This page does not help ? Join the uwu2x Discord server to seek help >_<