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=====av_new_stream=====
====Overview====
Defined in ''avformat.h''\\

Add a new stream to a media file.\\

Can only be called in the [[ffmpeg:read_header()]] function. If the flag AVFMTCTX_NOHEADER is in the format context, then new streams can be added in [[ffmpeg:av_read_packet()]] too.\\

<code c>
AVStream *av_new_stream(AVFormatContext *s,
                        int id);
</code>

====Parameters====
===s===
<code c>AVFormatContext *s</code>
Media file handle, contained in a [[ffmpeg:AVFormatContext]] pointer.

===id===
<code c>int id</code>
File format dependent stream id.\\
See [[ffmpeg:av_find_default_stream_index()]] for more info.

====Return value====
A pointer to the new [[ffmpeg:AVStream]] or NULL upon failure.

====See also====
[[ffmpeg:av_find_default_stream_index()]]

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Back to [[ffmpeg:ffmpeg]]