Hi. This code worked pretty well for me: http://readlist.com/lists/mplayerhq.hu/ffmpeg-user/1/8128.html
The only issue I had is that I'm unable to specify the outgoing quality. Can anyone comment on this? Regards. 2009/3/31 Clive Taylor <[email protected]> > Thank you, Edwin. I will give it a try. > > Clive > > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of Edwin van der > Horst > Sent: 31 March 2009 09:01 > To: Libav* user questions and discussions > Subject: Re: [libav-user] Writing single frames to JPEG > > Clive, > > I still think using the MJPEG codec might work for you, as you can > encode just a single frame using the codec, > which essentially just works as an JPEG encoder, it only uses p-frames > (in other words, full JPEG files frames as output > decode the correct frame you wish to encode to jpeg, set the encoder > parameters, and call the encode function. > > Good luck, > > Edwin > > > On Tue, Mar 31, 2009 at 1:54 AM, Mark Heath <[email protected]> > wrote: > > > > On 31/03/2009, at 10:47 AM, Clive Taylor wrote: > >> > > > >> That's my new task. I'm already using libavformat, etc in my code to > >> read the frames, and I've adapted the frame accurate seek library > code, > >> too. The whole lot is running under Windows, but Linux and OS/X > versions > >> are needed. > >> > >> I thought the really hard part was solved until I tried to work out > how > >> to save a single frame as a JPEG. > > > > Maybe look at the jpeg library. > > > > http://www.ijg.org/ > > > > Mark > > _______________________________________________ > > libav-user mailing list > > [email protected] > > https://lists.mplayerhq.hu/mailman/listinfo/libav-user > > > _______________________________________________ > libav-user mailing list > [email protected] > https://lists.mplayerhq.hu/mailman/listinfo/libav-user > > > _______________________________________________ > libav-user mailing list > [email protected] > https://lists.mplayerhq.hu/mailman/listinfo/libav-user > _______________________________________________ libav-user mailing list [email protected] https://lists.mplayerhq.hu/mailman/listinfo/libav-user
