Using Lossless RGB mode in FRAPS makes FRAPS even slower due to the higher bitrate, and the quality difference is not noticeable.
AVISource is
not wrong. Example:
Screenshot (taken using built-in screenshot utility; a SS from FRAPS looks identical)
AVISource, still image from video clip recorded at same approx time
FFVideoSource, same as above
The screenshot and AVISource are nearly identical; FFVideoSource looks utterly different. Unless the game's screenshot utility is converting PC levels to TV levels, AVISource is correct.
I am taking screenshots from the videos using AvsPmod's "Save Image". They are PNG which I then convert to JPG with 4:4:4 chroma.