[Libav-user] Write header more than once

[Michael IV]

Hi. I am trying to reuse already created instances of
AVFormatContext,AVCodecContext
and AVIOContext. My question is related to avformat_write_header() with
parameters.

At the end of the session I usually call  avcodec_parameters_free  to free
internal buffers.

Do I have also to call this method if I want to write header second or
third time to the same AVFormatContext instance?

Second question: is  extradata like SPS PPS  deallocated  as well,when I
call avcodec_parameters_free  ?

Thanks!
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