You must open the images in IrfanView via the menu "File/Open as RAW". Then, choose 8 BPP grayscale for .y, .u, or .v. IrfanView has a radio button to choose 24 bpp, with a checkbox for YUV 4:2:0, which will fit your .yuv files.
Alex On Wed, Jun 22, 2011 at 07:13, Amir Rouhi-Rmit <[email protected]> wrote: > I have downloaded the Irfanview as you told but still can not view the image > files with extension *.y or *.u or *.v. > BTW all image files with extension *.yuv which has been extracted by below > command: > > ffmpeg -i input.wmv -r 1 -s WxH -f image2 -pic_fmt yuvj420p Img-%03d.yuv > > the Irfan view detect them as Jpg and says it is an JPG image with wrong > extension.... whats your idea? > > > On Wed, Jun 22, 2011 at 1:38 PM, Alex Cohn <[email protected]> > wrote: >> >> On Windows, download a free program called IrfanView. >> Alex >> >> On Wednesday, June 22, 2011, Amir Rouhi-Rmit <[email protected]> >> wrote: >> > When i use the below command >> > ffmpeg -i input.wmv -r 1 -s WxH -f image2 Img-%03d.Y >> > i will get three different output file for each image which the >> > extensions are Img-xxx.u and Img-xxx.v and Img-xxx.y >> > it seems that the command separate the picture of each frame to 3 plane >> > y,u and v. But i cant view them to see the result. are they correct or not? >> > Can you recommend a software for viewing this images with extensions *.y >> > *.u >> > and *.v? >> > >> > But when i use the command: >> > ffmpeg -i input.wmv -r 1 -s WxH -f image2 -pic_fmt gray Img-%03d.Y >> > the result contains like previous command , for each image three planes >> > with *.y ,*.u and *.v which the size of *.u and *.v is 0. >> > how can i see the image of *.y resulted in this command and compare it >> > with previous one? size in both are same and hex editor shows same content >> > but i need to see the images. how to view them? >> > Tnx >> > >> > On Fri, Jun 17, 2011 at 8:37 PM, Stefano Sabatini >> > <[email protected]> wrote: >> > On date Thursday 2011-06-16 16:02:43 +1000, Amir Rouhi-Rmit encoded: >> >> I know that i can extract images of a video by ffmpeg as can be seen in >> >> below command: >> >> ffmpeg -i input.avi -r 1 -s WxH -f image2 Img-%03d.jpeg >> >> But what i want is a separated Y plane and cb and cr plane. can i i >> >> achieve >> >> this by ffmpeg? if yes pleas let me now how and if no do you suggest >> >> any >> >> idea? >> > >> > You may use the .Y raw image format: >> > ffmpeg -i input.avi -r 1 -s WxH -f image2 Img-%03d.Y >> > >> > to get separate .Y, .U, .V raw images. A possibly better solution >> > would be to use the lut filter, soon to be committed, and I suppose >> > you can achieve the same purpose using some of the MPlayer filters >> > wrapped by mp. >> > _______________________________________________ >> > Libav-user mailing list >> > [email protected] >> > http://ffmpeg.org/mailman/listinfo/libav-user >> > >> > >> > -- >> > Amir H. Rouhi >> > PhD Student/ CSIT RMIT University >> > Room: 14-09-04 >> > [email protected] >> > [email protected] >> > >> > >> _______________________________________________ >> Libav-user mailing list >> [email protected] >> http://ffmpeg.org/mailman/listinfo/libav-user > > > > -- > Amir H. Rouhi > PhD Student/ CSIT RMIT University > Room: 14-09-04 > [email protected] > [email protected] > > > _______________________________________________ > 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
