Method and apparatus for playing video data of high bit rate format by a player capable of playing video data of low bit rate format

An apparatus for playing a video data of high bit rate format stored in a storage device by a player which is capable of playing a video data of low bit rate format, said apparatus comprising:

• a CPU (201, 301) which is capable of doing the following operations:
• reading an original navigation information from the video data of high bit rate format;
• converting the original navigation information into a predictive navigation information which is applicable to the video data of low bit rate format;
• requesting, based on the predictive navigation information, a section of the video data of low bit rate format in a low bit rate byte information, said low bit rate byte information including a starting byte position and an end byte position of the section of the video data of low bit rate format for playing by the player;
• converting, based on the predictive navigation information and the original navigation information, the low bit rate byte information into a high bit rate byte information, said high bit rate byte information including a starting byte position and an end byte position of the section of the video data of high bit rate format;
• retrieving, based on the high bit rate byte information, the section of the video data of high bit rate format from the storage device;
• transcoding the section of the video data of high bit rate format to a section of the video data of low bit rate format;
• and
• a decoder (314) for decoding the video data of low bit rate format.

A method for playing a video data of high bit rate format stored in a storage device of a server (DMS) by a player (DMP) which is capable of playing a video data of low bit rate format, said method comprising:

• reading an original navigation information from the video data of high bit rate format in said server;
• converting the original navigation information into a predictive navigation information which is applicable to the video data of low bit rate format in said server;
• transferring said predictive navigation information to said player;
• requesting by said player, based on the predictive navigation information, a section of the video data of low bit rate format in a low bit rate byte information, said low bit rate byte information including a starting byte position and an end byte position of the section of the video data of low bit rate format for playing by the player;
• converting, based on the predictive navigation information and the original navigation information, the low bit rate byte information into a high bit rate byte information, said high bit rate byte information including a starting byte position and an end byte position of the section of the video data of high bit rate format;
• retrieving, based on the high bit rate byte information, the section of the video data of high bit rate format from the storage device in said server;
• and
• transcoding the section of the video data of high bit rate format to a section of the video data of low bit rate format.

An apparatus for playing a video data of high bit rate format stored in a storage device of a server (DMS) by a player (DMP) which is capable of playing a video data of low bit rate format, said apparatus comprising:

• a first CPU (201) provided in said server and capable of doing the following operations:
• reading an original navigation information from the video data of high bit rate format in said server;
• converting the original navigation information into a predictive navigation information which is applicable to the video data of low bit rate format in said server;
• transferring said predictive navigation information to said player;
• and
• a second CPU (301) provided in said player and capable of doing the following operations:
• requesting by said player, based on the predictive navigation information, a section of the video data of low bit rate format in a low bit rate byte information, said low bit rate byte information including a starting byte position and an end byte position of the section of the video data of low bit rate format for playing by the player;
• at least one of said first CPU and said second CPU capable of doing the following operation:
• converting, based on the predictive navigation information and the original navigation information, the low bit rate byte information into a high bit rate byte information, said high bit rate byte information including a starting byte position and an end byte position of the section of the video data of high bit rate format;
• said first CPU capable of doing the following operation:
• retrieving, based on the high bit rate byte information, the section of the video data of high bit rate format from the storage device in said server;
• and
• at least one of said first CPU and said second CPU capable of doing the following operation:
• transcoding the section of the video data of high bit rate format to a section of the video data of low bit rate format.