addVideoStream   1922 modules/videoio/src/cap_ffmpeg_impl.hpp     static AVStream* addVideoStream(AVFormatContext *oc, CV_CODEC_ID codec_id, int w, int h, int bitrate, double fps, PixelFormat pixel_format);
addVideoStream   2111 modules/videoio/src/cap_ffmpeg_impl.hpp     video_st_ = addVideoStream(oc_, codec_id, width, height, width * height * bitrate_scale, fps, codec_pix_fmt);