Document that av_write_header sets stream time_base to a value of it chosing.
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@ -507,6 +507,8 @@ typedef struct AVStream {
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* This is the fundamental unit of time (in seconds) in terms
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* of which frame timestamps are represented. For fixed-fps content,
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* time base should be 1/framerate and timestamp increments should be 1.
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* decoding: set by libavformat
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* encoding: set by libavformat in av_write_header
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*/
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AVRational time_base;
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int pts_wrap_bits; /**< number of bits in pts (used for wrapping control) */
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@ -1374,6 +1376,8 @@ void av_url_split(char *proto, int proto_size,
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/**
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* Allocate the stream private data and write the stream header to an
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* output media file.
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* Note: this sets stream time-bases, if possible to stream->codec->time_base
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* but for some formats it might also be some other time base
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*
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* @param s media file handle
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* @return 0 if OK, AVERROR_xxx on error
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