Recently I wanted to cut a video (just export few seconds of a long video).
When everything still was AVI it was easy for me and I used VirtualDub. There I could decide if I just do a keyframe cut without having to encode it again, or a frame cut with having to encode this.
Nowadays having MKV, MP4 etc. I tried Lossless Cut which just gave me a black video. Open Shots Video Editor which is too complicated for this task and where I struggle to maintain the aspect ratio of the original video. Handbrake is a bit better, but also offers too many options for that purpose.
So I ended up using Online Video Cutter. But I wonder that there isn’t any open source that just works as easily as that.


AVIDemux can cut video pretty easily. It’s not just for AVI files, it happily works with MKV, MP4 and many other formats.