For fixing already "washed out" or low-resolution videos, AI-based enhancers can help restore color and clarity.
Exporting using the H.264 codec into an MP4 container is the industry standard for compatibility, but mismatched bitrates or frame rates can occasionally lead to artifacts or color shifts. How to Fix or "Put Together" Clear Content White Thickmp4
Video players and monitors sometimes disagree on whether to use "Full" (0–255) or "Limited" (16–235) RGB ranges. If a video is exported in one range and played in another, blacks can look gray and whites can look "thick" or washed out. For fixing already "washed out" or low-resolution videos,
High Dynamic Range (HDR) settings in Windows or mobile devices can cause SDR (Standard Dynamic Range) MP4 files to appear overly bright or covered in a white haze. If a video is exported in one range
My white text becomes grey in exported mp4 file - Adobe Community
If the video looks "thick" in QuickTime but fine in VLC Player , the issue is likely the player's interpretation of the file, not the file itself.