The Watermark size won’t change anymore
There is a weird behavior with the ffmpeg watermarking option (vhook): the watermark is applied before the video is resized. It means the watermark can have a different size depending on your input video resolution. Pretty annoying since you make the image according to your output format and not the inverse. This is now fixed.
This example shows a 1280x720 video encoded in 640x0 before and after the fix:
