itsme, figures you're the author.
jakizakiflak, it's normal, the stream that you captured started 2 hours ago but you only got the 10 minutes. You could use ffmpeg to reencode the clip and trim off the excess using a container tool. The reencoding is needed if you wan't to keep audio and video in sync... otherwise I haven't found out a tool that can cut flv's properly without issues. Maybe someone here has some info about this.
I make all the clips in x264, mp3 constant and mkv container and for mkv I have command line tools but also tools with graphical interface like mkvtoolnix to easily trim the wanted parts and remove the ones that I don't want.