[Mjpeg-users] jpeg2yuv error: Unsuported samplig factor

I usually use jpeg2yuv -f 25 -n 1 -I p -j xxx | mpeg2enc . (1.6.2 on cygwin) in order to generate mpeg files without any problem starting from huge images taken by a digital camera and resized with ImageMagick: montage -geometry 720x576 -background black -quality 100. When I try to do this wit

[Mjpeg-users] JPEG2YUV crashes with STATUS_ACCESS_VIOLATION

When I try to use JPEG2YUV with some jpg files it crashes giving STATUS_ACCESS_VIOLATION I'm using rel. 1.6.1 compiled under cygwin on WIN32. I think the problem is relative to the size of image (in fact after resizing the image from 1120x840 to a standard DVD 720x576 it works fine). There are som

[Mjpeg-users] Parameters in mjpegtools that influence slide (still) shows

Could anyboby give me an explanation and/or suggestion  about the parameters influencing the quality of slide (still) shows in mjpegtools such as jpeg2yuv ppmtoy4m mpeg2enc yuvdemoise? Thanks