Most USB video grabbers are just clones with another name, have the same specs and can do exactly the same. The one I have is the DeLock USB video grabber. My advice when recording is to record to AVI format. Other formats (dvd, mpg1/2/4) are available, but these formats demand a lot of enconding and processorload. This can result in frame drops. Just record to AVI format and convert later to the desired format.
Here are some short samples of recordings.
- mini H-Copter
- Fatshark Predator v2 FPV set
- delock usb video grabber.