Abstract: The disclosure can provide a method and an apparatus for processing a video, a method and an apparatus for playing a video. The method for processing a video includes: displaying a video processing page including an editing region of a target template video, the editing region for displaying at least one video element of the target template video; obtaining associated object information of at least one associated object of a target video element corresponding to an object association instruction in response to the object association instruction triggered based on any video element; generating a target video based on the target template video in response to a video generation instruction, and establishing association information between the associated object information and the target video.

Abstract: The present disclosure relates to a synthesis method for halofuginone and its intermediates, with the reaction formulas as shown below, wherein, R1 is selected from: methyl, ethyl, propyl, isopropyl or tert-butyl:, R2 is selected from: methyl, ethyl:, R3 is selected from: methoxyformyl, ethoxyformyl, tert-butoxyformyl, benzyloxyformyl, trichloroethoxyformyl or benzyl. The synthesis method in the present disclosure has many advantages, such as simple process, low cost, few by-products in the synthesis process, simple purification process, no need for column chromatography purification, high product yield, few impurities, high purity, controllable product quality, easy to meet the requirements of ICH declaration, and it can be used for industrial production of halofuginone.