1A flv library.
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3## v0.1.0
4- Fix #20, clean up the remaing PPS data.
5- Fix the error chain.
6## v0.2.0
7- Read audio and video codec information.
8## v0.2.1
9- Fix rtmp cts parse error.
10## v0.3.0
11- Reference bytesio v0.3.0.
12- Do some refactoring for rtsp2rtmp.
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