So I was trying to make a video from a lossy source that plays without any compression artifacts in VLC media player or Windows Media Player, but I noticed that during preview and RAM preview that there are many compression artifacts that are visible. Rendering and playing the rendered video in both H.264 and lossless would cause the artifacts to be seen in both media players.
I tried to make a new composition from the source but it still shows these artifacts. Rendering the video in lossless would still show the artifacts.
So how do I fix this?
Here are some screenshots.
Here, you can see some very clear artifacts in preview.
This will carry over to the rendered video, no matter the render settings.
The source plays just fine.
Creating composition directly from the source yields the same artifacts.
Don't use mp4 video in AE. Transcode your clips to a production codec. I like quicktime movies in the Photo JPEG codec.
Deal with the larger file sizes.
you can't fix what is broken in the first place. The artifacts are there in the first place and any additional processing and re-compression will intensify them.