Method for codec-based recovery of a video using a cluster search

A codec-based video recovery method comprising:

• (a) a cluster extraction step where free cluster regions are extracted from the storage device;
• (b) a region extraction step where the free cluster is used to extract the H decoding region, which comprises of H.264 decoding information, and the H frame region, which comprises frames coded with the H.264 codec;
• (c) an interconnection step where the H frame region and H decoding region extracted in the region extraction step are interconnected and arranged;
• and
• (d) a recovery step where the H frame region and H decoding regions arranged in the interconnection step are decoded and the video is recovered.

A cluster search-based video recovery method comprising:

• (a) a decoding step where the clusters of the storage medium (7100) are decoded to generate at least one cluster group including independent frames;
• (b) an index data search step where the clusters of the storage medium are decoded to search for at least one index data;
• and
• (c) an image frame formation step where one cluster group included in the index data among the cluster group generated through the decoding step is formed as an image frame, or multiple cluster groups are connected to form an image frame.