Joining MP4 files from my new action cam. Software recommendations?

[Oldfentiger]

Mrs OFT has bought me an action camera, so if someone clears me up she will be able to identify the person she needs to thank and split the insurance money with.
It's a Silver Label Focus, bought from the LBS on their recommendation.

I've done a couple of rides with it fitted, transferred the files to the laptop.
For a ride of just over an hour I have 25 x MP4 files of up to 330Mb each.

I'd like to stitch these together so I have 1 file to cover my ride, so I'm asking if anyone could recommend suitable software for the task. Freeware, shareware, whatever.

One issue I need to overcome:
On both rides I've found that the inside of the hemispherical lens part of the waterproof case is getting partially obscured with condensation, which makes the images increasingly fuzzy as the ride progresses. Anyone else had this problem?

 

[confusedcyclist]

Microsoft movie maker will do this for free.

 

[subaqua]

Microsoft movie maker will do this for free.

This. Don't pay for anything you don't need to

 

[Arjimlad]

Mrs OFT has bought me an action camera, so if someone clears me up she will be able to identify the person she needs to thank and split the insurance money with.
....
One issue I need to overcome:
On both rides I've found that the inside of the hemispherical lens part of the waterproof case is getting partially obscured with condensation, which makes the images increasingly fuzzy as the ride progresses. Anyone else had this problem?

Your first sentence made me laugh, it's just why I got a camera too.

I leave the waterproof case on a sunny windowsill after drying it with a paper hand towel if it gets wet inside.

 

[confusedcyclist]

Sounds like the casing isn't water tight, is this a go pro imitation?

 

[jefmcg]

Why are you joining the files? Just dump them all in a folder with the date on it ,and get on with your life.

Are you going to relive the ride from the comfort of your living room?

 

[subaqua]

Condensation can happen in a watertight enclosure. Air is naturally "warm" and humid. Condensation forms on surfaces colder than the air .

A small silica gel sachet in the housing works well .

It's what I use with the go pro underwater and in the proper underwater camera .

 

[Oldfentiger]

Sounds like the casing isn't water tight, is this a go pro imitation?

Yes, I suppose it is.
However both rides were on sunny days with no water about.
I suspect that @subaqua is correct in that the moisture is in the captured air, in which case the silica gel satchet may be the fix.