[lamlam]

Also not an expert, but since videos are transcoded as key-frames and changes applied to those key frames, I don't think it's as simple as segmenting something like a CSV. Transcoding is probably required just for the segmentation process. Putting it back together might be easier, but the final output file might also be larger because of overhead.

[pfg]

The segmentation code is keyframe-aware, so it only splits along keyframe edges. In other words: requesting segments of 30 seconds each probably won't get you segments that are exactly 30 seconds long. Still, there could be plenty of other obstacles I'm not aware of.