What are the most annoying things about video in the Farcaster mobile app today?

The more specific, the more likely we can fix it!

I use a Samsung S24. If I record a full screen video it sits as an mp4 in my files. If I want to add it to a cast, it uploads, it processes, then tells me it isn't a video file. I have to change dimensions (9:16 usually does the trick) to be able to upload the same video.
My annoyances with this: I want to know the dimensions are incorrect, not be told.my videonis not a video.
Second: can compatibility checks be run before all the uploading and processing? Saves time.