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]
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