There is a bug in phoshare that triggers on .mp4 files if you use the --size option.
If you are handy with editing text files, you can fix it yourself. In the file
Contents/Resources/lib/python2.7/tilutil/imageutils.py
in the Phoshare folder, you need to add
, "mp4"
to line 155:
< return su.getfileextension(file_name) in ("mov", "avi", "m4v", "mpg", "3pg")
---
> return su.getfileextension(file_name) in ("mov", "avi", "m4v", "mpg", "3pg", "mp4")
Tilman