[FFmpeg-user] Fast seeking formats for storing live video

[Roger Pack]

> On the other hand if I convert it with ffmpeg first, (eg something like
> ffmpeg -ss 0 -t 1000 -i video.avi video2.avi)
>
> Then it takes about 1 second.  I guess it's to do with keyframes and gop and
> stuff.

http://ffmpeg.org/trac/ffmpeg/wiki/Seeking%20with%20FFmpeg may be of
interest to you (does using -ss before versus after input really have
different behavior? If so I would actually suggest it be deprecated
and renamed "fast seek" or something, that is soo confusing!)

-r