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

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

• acquiring block data of a video stream to be transmitted;
• generating an encryption key for an rth block with a block data digest of an (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;
• encrypting block video data of the rth block with the encryption key for the rth block, to obtain block encrypted video data of the rth block;
• and
• transmitting the block encrypted video data of the rth block to a receiving end,
• wherein prior to the encrypting block video data of the rth block with the encryption key for the rth block, to obtain block encrypted video data of the rth block, the video transmission method further comprises:
• storing the encryption key for the rth block in a preset first storage module;
• receiving the block video data of the rth block, and caching the block video data of the rth block;
• and
• monitoring a cache state of the block video data of the rth block,
• wherein the encrypting block video data of the rth block with the encryption key for the rth block, to obtain block encrypted video data of the rth block, comprises:
• encrypting cached block video data of the rth block with the encryption key for the rth block, to obtain the block encrypted video data of the rth block, in response to the cache state of the block video data of the rth block is that all the block video data of the rth block are cached.