牛人制作一台投影仪（牛人用手机自制投影机）

{"rich_content":{"text":"","spans":null},"video":{"vid":"v028b0fa0000bujl3gua0sef8rugh9cg","duration":68.755,"width":960,"height":540,"file_size":5433392,"thumb":{"web_uri":"tos-cn-p-0000/71a09fd86a1d424298fce8a747642198","width":640,"height":360,"image_type":null,"mimetype":null,"encrypt_web_uri":null,"secret_key":null,"encrypt_algorithm":null,"extra":null},"video_size":{"high":{"duration":68.755,"file_size":5694900,"w":854,"h":480},"normal":{"duration":68.755,"file_size":4157838,"w":640,"h":360},"ultra":{"duration":68.755,"file_size":6165449,"w":960,"h":540}},"is_encrypted":null,"sp":null,"md5":"36c4e2d558c231cb1eefb0e9bb8769ae","tos_key":null,"secret_key":null,"encrypt_algorithm":null,"extra":null}},