multifilesink: Added parameter for setting min keyframe based file size
Submitted by Dimitrios Katsaros
Currently, multifilesink using the key-frame option for the next-file
parameter creates segments with a minimum duration of 10 seconds.
However, depending on the application or the format being used, the
user may require a different duration or a minimal size for every
segment. This patch adds the min-keyframe-file-size parameter,
allowing the user to set the minimal duration.