Recent change in TIFF rows per strip break saving with JPEG compression

[manthey]

What did you do?

Tried to save an image with TIFF JPEG compression.

What did you expect to happen?

It to create a file.

What actually happened?

It threw OSError: encoder error -2 when writing image file. More specifically, I see JPEGSetupEncode: RowsPerStrip must be multiple of 8 for JPEG..

What are your OS, Python and Pillow versions?

• OS: Ubuntu 20.04
• Python: 3.9
• Pillow: 8.3.0

import PIL.Image
image = PIL.Image.new('RGB', (1760, 1046))
image.save('/tmp/junk.tiff', compression='tiff_jpeg')

The error was specifically introduced in https://github.com/python-pillow/Pillow/pull/5514/files#diff-6ad43f85f1a075181d4d8cfcd97ae27bba1eccf5c3db5a3457160f98218eba6eR1562-R1565

[kmilos]

I get the same error in 8.2.0 when writing as a single strip, 1046 is not a multiple of 8 either...

The problem was always there, however now more likely to pop up...

Sorry, works as single strip in 8.2.0, had local changes...

[radarhere]

Pillow 8.3.2 has just been released with the fix for this.