allow FHD (1920x1080) working with internal codec

1. if input jpg-files have 1920x1080 pixel, then
allow to create Full-HD-Video (1920x1080 pixel)
"use the same resolution as the source images"
for example you can look at
http://en.cze.cz/Images-to-video
2. implement one internal codec for AVI/MP4