Hi,

since #5514, group4 tiff images are not anymore saved as a single strip. This breaks the use-case of utilizing PIL for encoding images as group4 for inclusion in PDF documents, as the PDF format only supports a single group4 encoded strip per image.

Please allow for a way to force single-strip group4 encoding to restore this functionality, maybe by allowing to specify the maximum strip length?

(I realize this sounds a lot like https://xkcd.com/1172/ 😄)