Personally, I've been looking for an SDK that fits my needs for a long time. In general, there are a lot of options for you since you have stated the basic needs of the product. You can consider visioforge https://www.visioforge.com/ , it makes video and audio playback easier and captures different sources of material. In terms of format support - the range is decent, from MP4 to MPEG 1/2 and so on. And the bonus here is multiplatform, i.e. SDK capture video will work on all operating systems.