本文介绍了MPEG4 AVC标头大小?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
一个问题:.mp4文件头的字节大小是多少?
Just one question : what is the size in bytes of the header of a .mp4 file ?
目标是仅模糊此标头.
谢谢卡尔
推荐答案
这要视情况而定. ISO媒体容器格式(.mp4)使用称为 atoms 的元素构成.它取决于音轨的数量,H.264编码属性,复用器还喜欢将其名称放在文件中的free
原子中.
It depends. ISO media container format (.mp4) uses a strusture of elements called atoms. It depends on the number of tracks, the H.264 encoding properties, the muxers also like to put their names in the file in a free
atom.
期望它至少为1 KB.超过4k的可能性很小.
Expect it to be at least 1 kByte. Anything over 4k is not very likely.
如果遇到字符串mdat
(电影数据原子的标题),则文件标题会可能结束.
If you encounter the string mdat
(header of the movie data atom), the file header is probably over.
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