How to split a video using FFMPEG so that each chunk starts with a key frame?

Question

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

Answer 1

If you are willing to do some scripting and want I frames at a particular interval the one way to do it is

1. Run ffprobe and collect the locations of the I frames from the output

   ffprobe -show_streams

2. Run a series of -ss -t commands using the same script to get the chunks you desire.

You can then have your script decide minimum number of frames [say there are two I pictures within 10 frames of each other, you really don't want to be chunking it there].

The other way to do it is to use gstreamer's multisfilesink and set the mode to key frame [however that will chunk at every key frame so that may not be ideal]