choose_pixel_fmt  525 ffmpeg.h       enum AVPixelFormat choose_pixel_fmt(AVStream *st, AVCodecContext *avctx, AVCodec *codec, enum AVPixelFormat target);
choose_pixel_fmt  116 ffmpeg_filter.c         return av_strdup(av_get_pix_fmt_name(choose_pixel_fmt(ost->st, ost->enc_ctx, ost->enc, ost->enc_ctx->pix_fmt)));
choose_pixel_fmt 1690 ffmpeg_opt.c               choose_pixel_fmt(st, st->codec, codec, st->codec->pix_fmt);