I have a sony handycam which is HD and I've been trying to edit some videos using Blender video editor but its not registering my video files anywhere. I saved them from my camcorder to my computer (on my desktop) but when I click open, they aren't there. I have files in avchd (which are apparently standard on this camcorder) and in mp4 formats. I have done the settings for mp files but its still not there. Please help me so I can edit my movies from my camcorder. Thank you
You need to open the AVCHD file as if it were a folder (it is). In Mac: Right click, then "Show contents". You will see another folder, do the same with it. Then you'll find the *.MTS files. Those you can open and work with in Blender.
You can even change the extension "mts" to "mpg", but that's not necessary in Blender.