Regarding the Low Memory warning: it simply means that you're running out of available memory - which MixEmergency uses to cache the decoded video frames. When this happens, the OS will free up memory (by writing older/unused memory to the hard drive temporarily), which can cause MixEmergency's frame rate to drop for a short period. Once the memory is freed, then it's not really an issue. I'm actually going to remove this warning from MixEmergency, as it's not so much of an issue now that most laptops have more than 2 GB of RAM. Regarding the keyframe warning: your video has large distances between keyframes ( http://en.wikipedia.org/wiki/Key_frame#Video_compression ). This can cause MixEmergency to do a lot of work to get the correct video frame when dropping into certain parts of the file. The best way to stop this is to encode your videos with either set, or maximum keyframe distances (I recommend distances of around 25-30).
