On 2/13/13, Eric Beuque <[email protected]> wrote: > Hi, > > I'm using avcodec and swcale to to display a MPJEG stream in a Qt > application. > > avcodec decode image as YUV image and swscale rescale it in a RGB32 image > to fit in the windows. > > I would like to provide a zoom feature, i so i am wondering if any way > exists with swscale to rescale only the selected region. For example, I got > an original YUV image as 1280x800 pixels, the destination widget is 640x480 > pixels, but i want only to display the region [0,0] to [320,240]. > > Is swscale able to to that? I have some difficulties to understand all > variables in the documentation.
No, swscale is not supposed to do that. libavfilter have filters that do cropping, pading and etc... Also its not hard to do it manually. > Thank for your help > _______________________________________________ Libav-user mailing list [email protected] http://ffmpeg.org/mailman/listinfo/libav-user
