One thing I have always struggled with is how to set the JPEG quality factor (1..100) with libavcodec?
There is no such field in the giant AVCodecContext structure. Is it qmin/qmax? what is the relation between qmin/qmax and JPEG quality factor? Thanks, Silvain Keean Schupke wrote: > Hi, > > Thanks, I eventually found a usable example, then I found the codec > does not support all the JPEG types I need, so I am using libjpeg to > decode the jpegs into an RGB buffer, then swscale to convert to > YUV420P, for the next bit. > > Cheers, > Keean. > > 2008/6/30 Michel Bardiaux <[EMAIL PROTECTED]>: > >> Keean Schupke wrote: >> >>> Hi, >>> >>> Can anyone show me an example of how to use libavcodec to decode a >>> JPEG image from a memory buffer? >>> >>> >> Simply call avcodec_decode_video, using an AVCodecContext for the MJPEG >> codec. >> >> Greetings, >> -- >> Michel Bardiaux >> http://www.mediaxim.com/ >> _______________________________________________ >> 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
