Hello ez009m!
Sorry with the delay in my answer.
This is a warning message. It appears if the file itself has errors in AVC specification.
The level in file was specified incorrectly when it was created as the frame resolution is too high.
Therefore Video Splitter changes the Level for it could be edited and playbacked.
If you see such warning, then this not a problem for quality as Video Splitter makes correct settings by itself for you could receive the high quality output files.
