Written in Python, this program uses VLC media player to preview a video, and then it uses FFMPEG with "copy" codec to quickly cut out a segment from the video. VLC seek/jump hotkeys, as well as in/out hotkeys are supported.
Currently, it's just in Python (no EXE), but it should be easy to run it from Python. From the command prompt, install the dependencies:
pip install wxPython
pip install boto
pip install selenium
pip install google-api-python-client
Then start the program...