Here are some tools that I use all the time for my caps and videos in general. All the programs are full version and you might get a false positive with your anti-virus but they're clean.
First is freeware and it just got updated in Avidemux which is in 32 or 64 bits:
http://fixounet.free.fr/avidemux/download.htmlBoilsoft splitter. I didn't include their joiner as ultra joiner and Avidemux is much better:
http://www.mirrorcreator.com/files/GM5AIJ58/Ultra video splitter and joiner. Both are awesome programs and I like their splitter better than boilsoft probably because boil hasn't updated their program forever and I get better results with ultra and their joiner is the best I've ever used:
http://mir.cr/1NGECHB0The best splitting program out there by a mile but you have to learn how to use it. It has a steep learning curve but if you can master it then you will get the best results. This is the latest SolveigMM.Video.Splitter.5.0.1504.10 which just came out not too long ago:
http://mir.cr/KHTUFWFHYou can throw in virtual dub in there too but I haven't used that in ages.