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First call the 134 returned by the open method, and then call writeVideo to return -20. Normally, it should be greater than 0, right? Please help to find out why, thank you!
先调用open方法返回的134,然后再调用writeVideo返回-20,正常应该是大于0的吧?麻烦帮忙看下是什么原因,谢谢!
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