ffmpeg -codecs does not work on ffmpeg in windows. BTW whats the difference between yuv420 and yuvj420P among different vcodec?
On Sat, Jul 2, 2011 at 11:45 PM, Alex Cohn <[email protected]>wrote: > On Wednesday, June 29, 2011, Amir Rouhi-Rmit <[email protected]> > wrote: > > For generating raw images from every second of an input video,when i use > the below command: > > > > ffmpeg -i c:\test\animals.wmv -r 1 -f image2 -vcodec rawvideo -pix_fmt > yuvj420p c:\test\Img-%03d.yuv > > > > for every second of the video the ffmpeg generate two types of files: > > Img---.yuU and Img---.yuv > > And when i open the yuv file(with Irfanview), the 1/4th of the top part > of the image has been chopped and filled with smooth green colour. The rest > colour theme of the whole picture is also in green scale. (I use Irfanview > /open raw and enter height and width and 24 BPP and yuv 420. > > The green yuv files are most probably jpeg files in disguise. Make > sure these are not leftovers from another attempt to run ffmpeg. > > > but without -vcodec rawvideo ffmpeg generate only Img---.yuv files. But > this file can not be opened as raw files and actually are jpg with yuv > extension.( As you told it is because the default of image2 which is jpg) > > > BTW how can i see the different switches of -vcodec? (ffmpeg -vcodec list > does not show any list) > > ffmpeg -codecs > > Alex > > > > -- > > 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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