keyframe

We need to split a large live WMV video feed in small chunks all of the same size. We made a script that works fine doing this, except for one thing: the video chunks don't start with a key frame, so when playing most video chunks they don't display any image until a key frame from the original video is eventually reached. Isn't there a way to tell ffmpeg to make the output video to start with a key frame? Here is how our command lines look right now: ffmpeg.exe -i "C:\test.wmv" -ss 00:00:00 -t 00:00:05 -acodec copy -vcodec copy -async 1 -y "0000.wmv" ffmpeg.exe -i "C:\test.wmv" -ss 00:00:05

I have a piece of JS code to generate random numbers and output them as variables to be used here in place of the rotation values @-webkit-keyframes rotate { 0% {-webkit-transform: rotate(-10deg);} 100% {-webkit-transform: rotate(10deg);} } #dog{ /*irrelevant settings*/ -webkit-animation: rotate 5s infinite alternate ease-in-out; } The code above works fine however when I try to stick the variables from the javascript into rotate(variable); I cannot get it to work. I am new to this so I'm 90% sure I just haven't got the syntax right for the variable (seriously I am terrible at remembering if