I am not FFmpeg API expert, but you can find working example (avcodec_sample.0.5.0.c) at http://web.me.com/dhoerl/Home/Tech_Blog/Entries/2009/1/22_Revised_avcodec_sample.c.html
There are also two guides that I know: http://www.inb.uni-luebeck.de/~boehme/using_libavcodec.html (very outdated) http://dranger.com/ffmpeg/tutorial01.html (little outdated) To convert AVFrame from YUV to RGB you need to use sws_scale. Regards Grzegorz Sz. 2011/4/7 Amir Rouhi-Rmit <[email protected]>: > Hi > > I would be pleased if somebody guide me how can I extract frames in I-Frame > format from a MPEG-4 AVC (H.264) video stream. The I-Frame can be: > > A- Any selected frame which can be extracted in form of a 1 frame video > file. In this case the only frame of video should be in I-Frame. > > B- Extracting real I-Frames that exist in a video stream in form of 1 frame > video files. > > > > I found a method myself for type A, which is based on converting video to > RAW format by YUVTOOLS software(If somebody help me that how can I convert > the video to YUV or RGB by ffmpeg or any free software I would be pleased) , > and then I select any frame by its number and extract it as a 1 frame video > which is in I-Frame format by JM software. As you have noticed , this method > is very costy and take a long time. I hope by help of you I find a method in > ffmpeg filters to do that. > > Regards > > Amir > > _______________________________________________ > Libav-user mailing list > [email protected] > http://ffmpeg.org/mailman/listinfo/libav-user > > _______________________________________________ Libav-user mailing list [email protected] http://ffmpeg.org/mailman/listinfo/libav-user
