video

When I download a video (or any other media from this site), it seems like it (the media) does not save how large the file size: Is this to be expected or is there something more to this?

Hello guys I have a question: There was a video of a complete synthesis of MDP2P in the category video. But now it is gone! Does anyone know the reason why and where I can find or download it from? Thank you very much for any kind of help.