Lou is a comedian and he's having issues with recording video using his DSLR. It stops after about a half hour. Leo says that is a restriction of the European Union, but here in the US, there's several firmware updates and hacks to disable it. The best is the Magic Lantern for Canon. If he does a Google search for Panasonic GH4 hacks, he should be able to figure it out.
Lou also has issues with his Nexus camera app, which stops artificially at a random time. Leo says to try another camera app. The best video app for Android is Cinema FV5. FiLMic Pro is another that just launched an Android version.