Thanks for the reply Roland. I know of ffmpeg (this is what the framework the app is being built off).
Though I am not comfortable using command line to run programs.
Instead I am using adobe media encoder to create my H.264’s. Do you know if H.264 Quicktimes exported using media encoder are YUV420p?
From my research currently all H.264’s are YUV, and most are YUV420 as YUV422 is not widely supported… Not sure though…