In a method for transmission of video information between HTTP servers and
clients in a shared network resource, particularly Internet, the video
information is stored as a video file consisting of packet-divided video
streams compression-coded with average bit rates t(c) which cover the
clients' expected channel bit rates s. Each packet and the video file are
supplied with a header containing information for realizing a
bandwidth-scalable video transmission over a suitable version of HTTP.
During transmission switching between the video streams takes place on
the basis pf an estimation of the channel bit rate s and the information
in the packet header, such that the bit rate t(c) is adapted to the
client's actual channel bit rate s. In a method for client-executed
search and retrieval of video information in a shared network resource,
particularly searching of a video frame Fx in a packet-divided video
stream, the packets in a video stream are divipacket packet in each
group. On basis of given search criteria and search-specific information
in the packet headers the packet with the video frame Fx is found, such
that a pseudo-random search and retrieval are realized with the use of a
suitable version of HTTP as transport protocol.