I think you've overlooked the context of the data.
As mentioned earlier, I output lossless MagicYUV files.
I requested a modification to the alleged 2GB file size limit on segmented AVI output - which it appears is not an actual limit after some further testing. I put 10GB on purpose to see if it would reject it or break the output in some way, and then I chose 7100 to make sure I got several segments over a 21k frame selection range.