I've got a 1080p anime mkv file i would like to re-size or downscale into a 720p mkv file. This is because my computer is not capable of playing the file in 1080p and i am not able to afford an upgrade. It is encoded in H264. The audio is encoded in AC3,however this should not matter. I would like to keep the quality (ie no visible change in quality), and decrease the file size by around a half. I am completely new to encoding and I only have a faint idea of how to go about doing this. Could you suggest a software or program i should use and the settings and configurations to go with it. Thanks... if you have any other questions, feel free to ask.