Video transmission method, video transmission apparatus, electronic device and readable medium

A video transmission method applied to a receiving end, comprising:

• acquiring a block data digest of an (r−1)th block in a video stream, and generating a decryption key for an rth block based on the block data digest of the (r−1)th block, wherein the rth blocks comprises data to be transmitted at an rth time by the transmitting end, and r is an integer greater than or equal to 2;
• and
• receiving block encrypted video data of the rth block, and decrypting the block encrypted video data of the rth block with the decryption key for the rth block, to obtain block video data of the rth block,
• wherein prior to the receiving block encrypted video data of the rth block and decrypting the block encrypted video data of the rth block with the decryption key for the rth block, to obtain block video data of the rth block, the video transmission method further comprises:
• storing the decryption key for the rth block in a preset second storage module;
• caching the received block encrypted video data of the rth block;
• and
• monitoring a cache state of the block encrypted video data of the rth block,
• wherein the receiving block encrypted video data of the rth block and decrypting the block encrypted video data of the rth block with the decryption key for the rth block, to obtain block video data of the rth block, comprises:
• decrypting cached block encrypted video data of the rth block with the decryption key for the rth block, to obtain the block video data of the rth block, in response to the cache state of the block encrypted video data of the rth block is that all the block encrypted video data of the rth block are cached.