[Tatiana Solano]

Thanks for your answer, I have been checking in some other places and you’re right, the good thing is that I finally found the way to do it on my version that I’m working on windows. My version is: ffmpeg version N-37208-g01fcbdf built on Jan 27 2012 18:34:52 with gcc 4.6.2 and the comand line:

ffmpeg -vf select="eq(pict_type\,PICT_TYPE_I)" -i flujo.avi -vsync 2 -s 320x240 -f image2 -vframes 20 thumb-%02d.png

That works perfectly for me, and I’m also getting just a number of the frames cause I don’t want it all of them, but now I want to modify one or two of them (this isn’t the problem) and return them to the video, something like overwrite the key frames, but I haven’t found anything. Do you have any idea?

Best Regards

[Tatiana Solano]

Hello

I have been working with ffmpeg an a gif animation, so I was trying to do a video from it with alpha channel, and finally with your coments I figure it out, I use a sequence of png images that get from the gif animation and use the next code:

ffmpeg -i homer%05d.png -vcodec png -pix_fmt rgb32 -y z.mov

And it works… Hope it helps you