Is there a way to merge MPEG VOB AVI or other video files for free

i recommend you using Moyea video converter which is a powerful and reliable . Support to convert almost all video, audio and images files like TiVo, FLV, F4V, TOD, H.264/AVC, MPEG, MPEG-2, MPEG-4, AVI, WMV, MKV, MOV, MTS, M2TS, MOD, AAC, AC3, JPG etc. With it, you can convert all videos, audios to your portable devices like iPad, iPod, iPhone, Nexus one, iRiver Smart HD, Droid, Palm Pre, PSP, PS3, Xbox, Zune, Creative Zen, cell phones, Archos, Sansa, etc for playing. You can merge files to only one, convert videos in batch, trim video length, crop unwanted area in the frame, add watermark for logo, adjust effect, removing image noise and interlace, replace the original files' audio, flip original video vertically or horizontally. You can also enjoy the perfect audio and video synchronization and super fast conversion speed.

In addition, you are allowed to convert HD, AVCHD videos like M2TS, MTS, M2T, TOD, MOD, TP, EVO, etc from digital camcorders JVC, Canon, Panasonic, Sony, etc to Windows Movie Maker, Sony Vegas, Adobe Premiere, etc for further editing; or insert to PPT for presentation; or even upload to YouTube for sharing.