H.264 aka MPEG-4 Part 10 aka AVC (Advanced Video Coding)
is a compressed motion video format described by RFC 3994.
It is one of the formats used for Blu-Ray DVD (Digital Video Disc).
It is also used
by security cameras. It works by deleting material that is unchanged from frame to
frame. From the little I have read, it is not clever about panning shots. Though it
might be clever compressing shots that flip radidly between two cameras. It was
created by the JVT (Joint Video Team)
composed of the
ITU-TSS (International Telecommunications Union — Telecommunications Standards Sector)
VCEG (Video Coding Experts Group)
and the ISO (International Standards Organisation)
MPEG (Moving Picture Experts Group). Files using the format usually have the .mp4 extension.