[Libav-user] How can we extract frames from a video stream in MPEG-4 AVC format
gszpetkowski at gmail.com
Thu Apr 7 03:00:14 CEST 2011
I am not FFmpeg API expert, but you can find working example
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http://www.inb.uni-luebeck.de/~boehme/using_libavcodec.html (very outdated)
http://dranger.com/ffmpeg/tutorial01.html (little outdated)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.
2011/4/7 Amir Rouhi-Rmit <amir.rouhi at rmit.edu.au>:
> 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.
> Libav-user mailing list
> Libav-user at ffmpeg.org
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