Copy the settings of the source AVCodecContext into the destination
AVCodecContext. The resulting destination codec context will be
unopened, i.e. you are required to call avcodec_open2() before you
can use this AVCodecContext to decode/encode video/audio data.
@param dest target codec context, should be initialized with
avcodec_alloc_context3(NULL), but otherwise uninitialized
@param src source codec context
@return AVERROR() on error (e.g. memory allocation error), 0 on success
Copy the settings of the source AVCodecContext into the destination AVCodecContext. The resulting destination codec context will be unopened, i.e. you are required to call avcodec_open2() before you can use this AVCodecContext to decode/encode video/audio data.
@param dest target codec context, should be initialized with avcodec_alloc_context3(NULL), but otherwise uninitialized @param src source codec context @return AVERROR() on error (e.g. memory allocation error), 0 on success