I have an image sequence captured on a digital camera. The images are 3008x2000 pixels. If I try to encode them to a video file with this: mencoder mf://*.jpg -mf fps=25:type=jpg -ovc lavc -lavcopts vcodec=msmpeg4v2 -oac copy -o output.avi I get a segmentation fault. If I use imagemagick and scale them to 50% then the encoding works. I wondered if there was a way round this. The problem is that I want to keep the original images and make a small reference movie from them using a script on a server. I don't want ot have to create smaller images and save them somewhere and then encode them and delete them once they have been encoded. Thanks