I'm trying to use mencoder to combine videos converted from DVD using Handbrake and split up into pieces using ffmpeg. I want to take small sections out and recombine into one mp4 file.

When I use mencoder, I get a video the correct length but it is all white. I don't want to use MP4Box because as a second step I want to throw into the sequence videos made from a jpeg using ffmpeg with no sound and I believe MP4Box does not handle that well. Plus I cannot ensure the files are encoded exactly the same

So I would like to know how to feed mencoder a bunch of video files and have it re-encode and combine them into a single video. RIght now they all turn white and I would like the output to be h264/MP4.

Thanks for your kind help