2017-04-13 3:56 GMT+02:00 강구철 <kckang at skycom.ne.kr>: > this is err message. > > I use ffmpeg3.2.4. why no define PIX_FMT_RGB24 ? Because four years ago, it was changed into AV_PIX_FMT_RGB24 to avoid polluting your namespace. Carl Eugen