Hi
It's always difficult shooting into the light to get the exposure correct for a foreground subject. Most camreras withh try to compensate and a lot depends on the type of exposure setup the camera has.
Videopad can allow you to make some correction by using the "Brightness/Contrast/Gamma" effect
This is the sort of result you can expect..... but a lot depends on the actual footage.
This clip was split and the right hand section had the brighness and contrast adjusted to bring out some of the underexposed detail. Obviously if there is just total black or silhouettes of the subject then it may not work;there must be some detail to pull out.
You may find that altering (increasing) the brightness will bring out something at the expense of the contrast,(and the already bright background) but bringing up the contrast may result in a very hard image. You will have to experiment.
Nat