[Libav-user] Write header more than once

Michael IV explomaster at gmail.com
Sun Nov 19 14:05:49 EET 2017

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

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  ?

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